Tomcat on Windows Server 2003 : What Windows User Account?
I wonder if recipients can advise me what Windows user account would be used by an external process triggered by a JSP app running on Tomcat? We have an JSP application, served up by Tomcat, with a MySQL back-end database. At intervals it is necessary to do a bulk update of the database. We intend eventually to do this via the app through the JDBC interface but for the time being we have taken a short cut. Calling this shortcut from within the app closes down Tomcat on the server and launches a batch file, which in turn calls .sql script files which load data files into the database. The the batch file restarts the Tomcat service. The user (who is is on a remote PC, not the server) is advised to close their browser, leave it a couple of minutes, then restart. Messy, I know, but within the time it's the best we've been able to do. Tested on a Windows XP Pro 'server' this all works fine, but in situ at the customer's site we are getting errors that suggest that there may be permissions issues arising. So the question is: when we shutdown the Tomcat service and launch the batch files, under which Windows account would this be running? The customer has a Windows 2003 server, and has a Windows 2003 AD environment, though I believe the accounts we are using on the server are machine accounts. In fact, under what Windows account does Tomcat execute anyway? Does it create its own machine account when it is installed, or does it take the permissions of whoever first installed it? Tom Burke
Re: Question reg. setting the environment variable
which windows version u r using? Usually u can right click on start-controlpanel- system select the ADVANCED tab then click the environmental variables at the bottom and enter ur calsspath and all On 1/13/06, gupta vidhi [EMAIL PROTECTED] wrote: hello, i'd installed jdk-1_5_0_02-windows-i586-p-iftw and jakarta-tomcat-4.1.31 on desktop.but unable to set its required path.i request u to kindly help me out for the same and starting my Tomcat. Regards, Vidhi - Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Image Scaling Code
That was the old way to fix a bug in the JVM I believe. Anyways nowadays you
can pass the following option to the server when starting:
-Djava.awt.headless=true
That will prevent the errors mentioned below when you don't have a graphical
shell running on your system.
Regards, Wouter
-Original Message-
From: Ben Kim [mailto:[EMAIL PROTECTED]
Sent: Friday, January 13, 2006 7:54 AM
To: Tomcat Users List
Subject: Re: Image Scaling Code
This may or may not be the case with you.
I had a similar error (X11, DISPLAY) with an earlier version of tomcat
included in a 3rd party package, on linux.
After I installed Xvfb (x virtual frame buffer) server rpm, the error went
away. (http://www.xfree86.org/4.0.1/Xvfb.1.html) I think there was a clue in
the error log.
If you're on Fedora, you can just do yum install xorg-x11-Xvfb or do yum
search Xvfb. I don't think I had to run it actually.
Don't know if it will help you, but just in case.
Regards,
Ben Kim
Developer
http://benix.tamu.edu
On 1/12/06, Justin Jaynes [EMAIL PROTECTED] wrote:
Hello all,
I've written a java class to scale jpeg images. But I can't seem to
get it to work. Can anyone point me in the right direction?
Here is my code:
package com.everybuddystree;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
public class ImageScaler {
public ImageScaler() {
}
public boolean scaleImageByWidth(String fileName, int newWidth) {
File originalImage = new File(fileName);
try {
BufferedImage workingBufferedImage = ImageIO.read(originalImage);
int width = workingBufferedImage.getWidth();
int height = workingBufferedImage.getHeight();
Image workingImage = workingBufferedImage;
workingImage = (Image)workingImage.getScaledInstance(newWidth,-1,1);
BufferedImage finalImage = (BufferedImage)workingImage;
ImageIO.write(finalImage, jpg, originalImage);
return true;
} catch (IOException ex){
return false;
}
}
}
When I run the pass an image to the class using a jsp I get the
following errors from Tomcat:
HTTP Status 500 -
-
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
javax.servlet.ServletException: Can't connect to X11 window server
using ':0.0' as the value of the DISPLAY variable.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(
PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:781) org.apache.jsp.image_jsp._jspService(
org.apache.jsp.image_jsp:158)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root
cause
java.lang.InternalError: Can't connect to X11 window server using ':0.0'
as the value of the DISPLAY variable.
sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java
:53) sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java
:142) java.security.AccessController.doPrivileged(Native Method)
sun.awt.X11GraphicsEnvironment.clinit(X11GraphicsEnvironment.java:13
1) java.lang.Class.forName0(Native Method) java.lang.Class.forName(
Class.java:164)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
GraphicsEnvironment.java:68)
sun.awt.X11.XToolkit.clinit(XToolkit.java
:96) java.lang.Class.forName0(Native Method)
java.lang.Class.forName(
Class.java:164) java.awt.Toolkit$2.run(Toolkit.java:821)
java.security.AccessController.doPrivileged(Native Method)
java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
java.awt.Image.getScaledInstance(Image.java:158)
com.everybuddystree.ImageScaler.scaleImageByWidth(ImageScaler.java:21)
org.apache.jsp.image_jsp._jspService(org.apache.jsp.image_jsp:114)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The
full stack trace of the root cause is available in the Apache
Tomcat/5.5.12 logs.
-
Apache Tomcat/5.5.12
-
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Tomcat 5.5. APR Standalone Page not loading without compression ...
Hi All, My config .. tomcat 5.5 jdk1.5._06 apr 1.2.2 tomcat-jni 1.1.0 server.xml Connector port=80 maxHttpHeaderSize=8192 maxThreads=150 minSpareThreads=25 maxSpareThreads=75 enableLookups=false redirectPort=8443 acceptCount=100 compression=on compressionMinSize=2048 noCompressionUserAgents=gozilla, traviata compressableMimeType=text/html,text/xml protocol=org.apache.coyote.http11.Http11AprProtocol connectionTimeout=2 disableUploadTimeout=true / The problem is this, I have a jsp page with will result in about 14KB worth of HTML.. with compression off .. this page doesnt not load, i keep getting a could not load page .. if i create a html file representing the output of the jsp ... this is what i get when using wget .. FOR THE HTML FILE --- wget www.mydomain.com/foo.html --22:32:38-- http://www.mydomain.com:80/foo.htmlhttp://www.mydomain.com/foo.html Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 200 OK Length: 13,202 [text/html] 0K - .. .. [ 97%] 22:32:59 ( 641.20 B/s) - Read error at byte 12824/13202 (No such file or directory). Retrying. --22:32:59-- http://www.mydomain.com:80/foo.htmlhttp://www.mydomain.com/foo.html (try: 2) = Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 206 Partial Content Length: 13,202 (378 to go) [text/html] 0K - ,, ,, [100%] 22:32:59 (369.14 KB/s) - `foo.html.3' saved [13202/13202] FOR THE JSP FILE C:\wgetwget www.mydomain.com/p.jsp?id=4 --22:36:28-- http://www.mydomain.com:80/p.jsp?id=4http://www.mydomain.com/p.jsp?id=4 = [EMAIL PROTECTED]' [EMAIL PROTECTED]' Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] 0K - .. .. 22:36:48 (639.90 B/s) - Read error at byte 12798 (No such file or directory).Ret rying. --22:36:48-- http://www.mydomain.com:80/p.jsp?id=4http://www.mydomain.com/p.jsp?id=4 (try: 2) = [EMAIL PROTECTED]' [EMAIL PROTECTED]' Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] 0K - .. .. 22:37:09 (639.90 B/s) - Read error at byte 12798 (No such file or directory).Ret rying. --22:37:09-- http://www.mydomain.com:80/p.jsp?id=4http://www.mydomain.com/postanswer.jsp?id=4 (try: 3) = [EMAIL PROTECTED]' [EMAIL PROTECTED]' Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] 0K - .. .. 22:37:29 (639.90 B/s) - Read error at byte 12798 (No such file or directory).Ret rying. --22:37:29-- http://www.mydomain.com:80/p.jsp?id=4http://www.mydomain.com/postanswer.jsp?id=4 (try: 4) = [EMAIL PROTECTED]' [EMAIL PROTECTED]' Connecting to www.mydomain.com:80 http://www.mydomain.com/... connected! HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] JSP WGET END For the JSP file it keeps looping .. I have set no-cache for the jsp page and the page buffer is 32 kb ... Any ideas on what could be going wrong .. like i said .. it works fine with compression on ... Cheers Mo
RE: Small connection problems with JK 1.2.15 and IIS 5
Mladen, Thank you very much for your reply. I didn't catch cachesize relates to concurrent users, in this case I will have to change a lot of workers. So I assume that there are (currently) no recommendations regarding a maximum total worker.cachesize for a single IIS5 server, correct? Also, a little comment: it would be useful to have a default higher than 10 for cachesize, or maybe a global setting in the isapi_redirect.properties file. Thanks again, br1. - Original Message - From: Mladen Turk [EMAIL PROTECTED] To: Tomcat Users List users@tomcat.apache.org Sent: Wednesday, January 11, 2006 5:29 PM Subject: Re: Small connection problems with JK 1.2.15 and IIS 5 br1 wrote: Hello, I am new to the list but I must say I used it a lot to find things in the past years. This time I am facing a problem or two but not finding a solution.. small problems luckily. (2) [Fri Jan 06 15:17:20 2006] [warn] jk_ajp_common.c (2138): Unable to get the free endpoint for worker MYWORKER from 20 slots [Fri Jan 06 15:17:20 2006] [info] jk_ajp_common.c (2152): can't find free endpoint Increase the cachesize for the worker. The value should reflect the number of concurrent users on the system. The above messages means that you have more then 20 concurrent users connected. According to a few posts I found I added connectionTimeout=0 to some tomcats and raised the cachesize of some workers that were giving problems (worker.MYWORKER.cachesize=20) Now I still get the error (1) a couple of times a second and the error (2) a few times the day. My questions at this point would be: 1- Are the above entries caused by the new JK 1.2.15 or I did have the same problems and I didn't notice? (the log level was set to emerg) See above comments. 2- I applied connectionTimeout=0 to Tomcats 5.5.x. Is this also needed for older Tomcat versions 5.0/4.1.7/4.0.6 - though in the docs the parameter was not documented for the AJP connector? You don't need this for 5.x (by default connectionTimeout is disabled), but you need that for 4.x (connectionTimeout defaults to 1 minute). 4- In the AJP documentation the min and maxProcessors are deprecated. What should one use instead? They saved my life with Tomcat 4. maxThreads. 6- Too many questions? :-) No :) Regards, Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Small connection problems with JK 1.2.15 and IIS 5
br1 wrote: Mladen, Thank you very much for your reply. I didn't catch cachesize relates to concurrent users, in this case I will have to change a lot of workers. So I assume that there are (currently) no recommendations regarding a maximum total worker.cachesize for a single IIS5 server, correct? Also, a little comment: it would be useful to have a default higher than 10 for cachesize, or maybe a global setting in the isapi_redirect.properties file. No, because XP (Workstation) versions of IIS are limited to 10 concurrent connections. You will need a Server version of Windows for higher number. That's probably a Microsoft trick to sell the Servers :) Regards, Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: concurrency of users on tomcat
Tomcat should be able to handle this. The real question is can your application handle it? Bandwidth is application dependent. You'll need to examine the average file size being returned. Whether the file can be compressed (via gzip). How many database queries need to be done. Can the database handle this many queries per second. Can a caching solution be put in place? (This can be done at the data lookup layer and possible at the http response layer) If your using sessions - what is the min/max/average session size. Can you hold 300K sessions with that amount of memory? (With that many users - I'd personally avoid HttpSession and roll my own solution) There are many google links for scaling java based servers. Many might be server specific but in general - the principles they talk about are pretty generic. -Tim vishwas kharajge wrote: Hi we are running tomcat5.0 on sun V20z server Backed is mysql Our requirement is to provide 200 concurrent hits per second There are 300K users registration on the server For this what is the requirement? How much bandwidht it require for giving above concurrency? How to configure the server? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: help for error javax.servlet.ServletException
A servlet threw a Throwwable during its service method which was not caught
by any number of exceptions. There should be something in the logs
(catalina.out of localhost_log_{date}.txt which should tell you the nested
part of the exception. Otherwise - start looking for timestamps and trace
that back to the access log. From there you might be able to find the culprit.
-Tim
Qaiser Mehmood wrote:
Does anyone know why I am getting this error :
javax.servlet.ServletException: Servlet execution threw an exception
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
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Re: Unable to override doPut(), etc, from Tomcat's JSPServlet (response 403)
You cannot add a doPut() to your servlet and excpect it to work. But in your
JSP, you can do this:
// The following worked fine with tomcat 5.0.28 (plus unrelated patches)
if(PUT.equals(request.getMethod()) {
/*put code*/
} else {
/*not put code*/
}
JSP's declare Servlet.service() as final. Then they call _jspService() (which
is created during JSP compilation). So doYYY() is never called.
-Tim
Ken Johanson wrote:
Hi all,
I'm wondering if there is another configuration needed to set which HTTP
methods that JSPServlet accepts.. I'm attempting overriding doPut() in a
JSP but I get a 403. Same if I don't override it and just try with
'request.getMethod().equalsIgnoreCase(PUT)' in the JSP generated
service() body..
%!
public void doPut(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException
{
//do something
}
%
Currently PUT always generates 403, even though I am authenticated okay
(indicated by the remote-user field in access logs). But GET and POST
are fine..
Thanks in advance,
-Ken
PS - Here's my web.xml excerpt:
security-constraint
display-nameExample Security Constraint/display-name
web-resource-collection
web-resource-nameProtected Area/web-resource-name
!-- Define the context-relative URL(s) to be protected --
url-pattern/*/url-pattern
!-- If you list http methods, only those methods are
protected --
http-methodHEAD/http-method
http-methodGET/http-method
http-methodPOST/http-method
http-methodPUT/http-method
http-methodDELETE/http-method
http-methodTRACE/http-method
http-methodOPTIONS/http-method
http-methodHEAD/http-method
/web-resource-collection
auth-constraint
!-- Anyone with one of the listed roles may access this
area --
role-nametomcat/role-name
role-namerole1/role-name
role-nameken/role-name
/auth-constraint
/security-constraint
login-config
auth-methodFORM/auth-method
form-login-config
form-login-page/login.jsp/form-login-page
form-error-page/login.jsp?fail=true/form-error-page
/form-login-config
/login-config
!-- Security roles referenced by this web application --
security-role
role-namerole1/role-name
/security-role
security-role
role-nametomcat/role-name
/security-role
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Tomcat 5.5 will not reload exploded applications when a class is recompiled
Hello, I have the following problem: Tomcat 5.5 will not reload exploded applications when a class is recompiled. Is there any modification to be applied to Tomcat. Note that my autodeploy attribute is set to true(host) and that my reloadable attribute is also set to true(context). Any clue very welcome, Julien.
Re: forwarding JDOM-Objects
So I wrote this servlet, it gets a JDOM-object from another servlet and
returns with a another attribute.
Document mydoc = (Document)
this.getServletContext().getAttribute(jdom_object);
TXMLObject tobj = TXMLObject.newInstance ( mydoc);
ServletContext sercon = this.getServletContext();
String giveback = Tamino_returnvalue;
try {
TConnection connection =
TConnectionFactory.getInstance().newConnection(
http://localhost/tamino/chris; );
TXMLObjectAccessor xmlObjectAccessor =
connection.newXMLObjectAccessor(
TAccessLocation.newInstance( test1 ),
TJDOMObjectModel.getInstance() );
TResponse myret = xmlObjectAccessor.insert( tobj );
connection.close();
sercon.setAttribute( giveback , myret );
} catch ( TConnectionException te ) { te.getCause(); }
catch ( TInsertException ie ) { ie.toString(); };
But something doesn't fit. Because I got this dump:
javax.servlet.ServletException: Error instantiating servlet class
DatenbankEingabe
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
*root cause*
java.lang.NoClassDefFoundError:
com/softwareag/tamino/db/api/accessor/TInsertException
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
java.lang.Class.getConstructor0(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
Is this caused by the single thread? I wortk with Eclipse, and this has no
problem finding a class. Hmmm but maybe tomcat.
Anyway I send this mail away.
Gruss Christian
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Re: Tomcat 5.5 will not reload exploded applications when a class is recompiled
Hello Julien, What about the unpackWARs attribute (in server.xml)? I think its also need to be true. Regards, Jarrar. Julien Martin wrote: Hello, I have the following problem: Tomcat 5.5 will not reload exploded applications when a class is recompiled. Is there any modification to be applied to Tomcat. Note that my autodeploy attribute is set to true(host) and that my reloadable attribute is also set to true(context). Any clue very welcome, Julien. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: forwarding JDOM-Objects
Your class in not available for your servlet.
Check in you war that com/softwareag/tamino/db/api/accessor/TInsertException
is either in WEB-INF/classes, either in a .jar in WEB-INF/lib
Le Vendredi 13 Janvier 2006 15:44, Christian Stalp a écrit :
So I wrote this servlet, it gets a JDOM-object from another servlet and
returns with a another attribute.
Document mydoc = (Document)
this.getServletContext().getAttribute(jdom_object);
TXMLObject tobj = TXMLObject.newInstance ( mydoc);
ServletContext sercon = this.getServletContext();
String giveback = Tamino_returnvalue;
try {
TConnection connection =
TConnectionFactory.getInstance().newConnection(
http://localhost/tamino/chris; );
TXMLObjectAccessor xmlObjectAccessor =
connection.newXMLObjectAccessor(
TAccessLocation.newInstance( test1 ),
TJDOMObjectModel.getInstance() );
TResponse myret = xmlObjectAccessor.insert( tobj );
connection.close();
sercon.setAttribute( giveback , myret );
} catch ( TConnectionException te ) { te.getCause(); }
catch ( TInsertException ie ) { ie.toString(); };
But something doesn't fit. Because I got this dump:
javax.servlet.ServletException: Error instantiating servlet class
DatenbankEingabe
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
*root cause*
java.lang.NoClassDefFoundError:
com/softwareag/tamino/db/api/accessor/TInsertException
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
java.lang.Class.getConstructor0(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
Is this caused by the single thread? I wortk with Eclipse, and this has no
problem finding a class. Hmmm but maybe tomcat.
Anyway I send this mail away.
Gruss Christian
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Pingouins dans les champs, hiver méchant
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Re: Image Scaling Code
Hallo Wouter,
Yes I had the same problem and I add:
-Djava.awt.headless=true
option in
/usr/local/tomcat5/bin/catalina.sh
file like this:
CATALINA_OPTS=-Djava.awt.headless=true
and than everything works as expected.
Regards,
Jarrar.
Wouter Boers wrote:
That was the old way to fix a bug in the JVM I believe. Anyways nowadays you
can pass the following option to the server when starting:
-Djava.awt.headless=true
That will prevent the errors mentioned below when you don't have a graphical
shell running on your system.
Regards, Wouter
-Original Message-
From: Ben Kim [mailto:[EMAIL PROTECTED]
Sent: Friday, January 13, 2006 7:54 AM
To: Tomcat Users List
Subject: Re: Image Scaling Code
This may or may not be the case with you.
I had a similar error (X11, DISPLAY) with an earlier version of tomcat
included in a 3rd party package, on linux.
After I installed Xvfb (x virtual frame buffer) server rpm, the error went
away. (http://www.xfree86.org/4.0.1/Xvfb.1.html) I think there was a clue in
the error log.
If you're on Fedora, you can just do yum install xorg-x11-Xvfb or do yum
search Xvfb. I don't think I had to run it actually.
Don't know if it will help you, but just in case.
Regards,
Ben Kim
Developer
http://benix.tamu.edu
On 1/12/06, Justin Jaynes [EMAIL PROTECTED] wrote:
Hello all,
I've written a java class to scale jpeg images. But I can't seem to
get it to work. Can anyone point me in the right direction?
Here is my code:
package com.everybuddystree;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
public class ImageScaler {
public ImageScaler() {
}
public boolean scaleImageByWidth(String fileName, int newWidth) {
File originalImage = new File(fileName);
try {
BufferedImage workingBufferedImage = ImageIO.read(originalImage);
int width = workingBufferedImage.getWidth();
int height = workingBufferedImage.getHeight();
Image workingImage = workingBufferedImage;
workingImage = (Image)workingImage.getScaledInstance(newWidth,-1,1);
BufferedImage finalImage = (BufferedImage)workingImage;
ImageIO.write(finalImage, jpg, originalImage);
return true;
} catch (IOException ex){
return false;
}
}
}
When I run the pass an image to the class using a jsp I get the
following errors from Tomcat:
HTTP Status 500 -
-
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
javax.servlet.ServletException: Can't connect to X11 window server
using ':0.0' as the value of the DISPLAY variable.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(
PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:781) org.apache.jsp.image_jsp._jspService(
org.apache.jsp.image_jsp:158)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root
cause
java.lang.InternalError: Can't connect to X11 window server using ':0.0'
as the value of the DISPLAY variable.
sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java
:53) sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java
:142) java.security.AccessController.doPrivileged(Native Method)
sun.awt.X11GraphicsEnvironment.clinit(X11GraphicsEnvironment.java:13
1) java.lang.Class.forName0(Native Method) java.lang.Class.forName(
Class.java:164)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
GraphicsEnvironment.java:68)
sun.awt.X11.XToolkit.clinit(XToolkit.java
:96) java.lang.Class.forName0(Native Method)
java.lang.Class.forName(
Class.java:164) java.awt.Toolkit$2.run(Toolkit.java:821)
java.security.AccessController.doPrivileged(Native Method)
java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
java.awt.Image.getScaledInstance(Image.java:158)
com.everybuddystree.ImageScaler.scaleImageByWidth(ImageScaler.java:21)
org.apache.jsp.image_jsp._jspService(org.apache.jsp.image_jsp:114)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The
full stack trace of the root cause is available in the Apache
Tomcat/5.5.12 logs.
-
Apache
Re: Question reg. setting the environment variable
gupta vidhi wrote: hello, i'd installed jdk-1_5_0_02-windows-i586-p-iftw and jakarta-tomcat-4.1.31 on desktop.but unable to set its required path.i request u to kindly help me out for the same and starting my Tomcat. You might find my answer irrelevant, but why are you still using Tomcat4? Tomcat 5.5 is a lot easier to setup and run. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Recommended way to selectively RequestDispatch.include/forward to form based login?
Bill Barker wrote: . The above seems like it should work; however I happen to get a StringIndexOutOfBounds* (with tomcat 5.0.30), probably caused by RD not being able to resolve the path of a protected URI (a guess) - so I'm looking for another way.. No, it's actually because it's including a welcome-page. TC 5.5.x handles this case fine. Well, I did try making the include() call the JSP directly (/login/index.jsp) and had the same problem.. or is this literally because the requested file *is* listed in the welcome files list? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Image Scaling Code
headless I think the command is.
On 1/12/06, Dakota Jack [EMAIL PROTECTED] wrote:
You need to set a java command option so that your code won't search for a
display. Apparently you are using this with a server that has no monitor?
I forget the option but look them up under the java command and it will be
obviously. It ends in less as I recall.
On 1/12/06, Justin Jaynes [EMAIL PROTECTED] wrote:
Hello all,
I've written a java class to scale jpeg images. But I can't seem to get
it to work. Can anyone point me in the right direction?
Here is my code:
package com.everybuddystree;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
public class ImageScaler {
public ImageScaler() {
}
public boolean scaleImageByWidth(String fileName, int newWidth) {
File originalImage = new File(fileName);
try {
BufferedImage workingBufferedImage = ImageIO.read(originalImage);
int width = workingBufferedImage.getWidth();
int height = workingBufferedImage.getHeight();
Image workingImage = workingBufferedImage;
workingImage = (Image)workingImage.getScaledInstance(newWidth,-1,1);
BufferedImage finalImage = (BufferedImage)workingImage;
ImageIO.write(finalImage, jpg, originalImage);
return true;
} catch (IOException ex){
return false;
}
}
}
When I run the pass an image to the class using a jsp I get the
following errors from Tomcat:
HTTP Status 500 -
-
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
javax.servlet.ServletException: Can't connect to X11 window server using
':0.0' as the value of the DISPLAY variable.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(
PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:781) org.apache.jsp.image_jsp._jspService (
org.apache.jsp.image_jsp:158)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(
JspServletWrapper.java :322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314) org.apache.jasper.servlet.JspServlet.service(JspServlet.java
:264) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root
cause
java.lang.InternalError: Can't connect to X11 window server using ':0.0'
as the value of the DISPLAY variable.
sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java
:53) sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java
:142) java.security.AccessController.doPrivileged (Native Method)
sun.awt.X11GraphicsEnvironment.clinit(X11GraphicsEnvironment.java
:131) java.lang.Class.forName0(Native Method) java.lang.Class.forName(
Class.java:164)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
GraphicsEnvironment.java:68) sun.awt.X11.XToolkit.clinit(
XToolkit.java:96) java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Class.java:164) java.awt.Toolkit$2.run(
Toolkit.java:821) java.security.AccessController.doPrivileged(Native
Method) java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
java.awt.Image.getScaledInstance (Image.java:158)
com.everybuddystree.ImageScaler.scaleImageByWidth(ImageScaler.java:21)
org.apache.jsp.image_jsp._jspService(org.apache.jsp.image_jsp:114)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java :97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(
JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The
full stack trace of the root cause is available in the Apache Tomcat/5.5.12
logs.
-
Apache Tomcat/5.5.12
-
Yahoo! Photos – Showcase holiday pictures in hardcover
Photo Books. You design it and we'll bind it!
--
You can lead a horse to water but you cannot make it float on its back.
~Dakota Jack~
--
You can lead a horse to water but you cannot make it float on its back.
~Dakota Jack~
Re: Unable to override doPut(), etc, from Tomcat's JSPServlet (response 403)
Tim Funk wrote:
You cannot add a doPut() to your servlet and excpect it to work. But in
your JSP, you can do this:
// The following worked fine with tomcat 5.0.28 (plus unrelated patches)
if(PUT.equals(request.getMethod()) {
/*put code*/
} else {
/*not put code*/
}
JSP's declare Servlet.service() as final. Then they call _jspService()
(which is created during JSP compilation). So doYYY() is never called.
-Tim
Ken Johanson wrote:
Serendipity! I guess the couple time I'd done this before made me overly
confident that it should work the way I *remembered* doing it (which was
implement doPut *and* add the dispatch code which I'm not doing now).
Of course you are right - if the JSP overrides service (even indirectly
as final), than super cant dispatch it to the per-method handler.
Thanks!!!
ps _ I think above you may have meant You *can* add a doPut() to your
servlet and expect it to work (only if service isn't overridden or is
but calls super.service()).
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Forwarding to contexts in other hosts
Hello, is it possible to forward a request to a context in another host-section ? for example from server.xml: ---%--- ... Engine name=Catalina defaultHost=www.host-a.com Host name=www.host-a.com Context path=/context-a1 / /Host Host name=www.host-b.com Context path=/context-b1 / Context path=/context-b2 / /Host /Engine ... ---%--- To forward from context-b1 to context-b2 I can use a RequestDispatcher like this: getServletContext().getRequestDispatcher(/context-b2).forward(request,response); But what can I do to forward from context-b1 to context-a1 ? Thanks in advance Marco --- http://www.kontaktlinsen-preisvergleich.de http://www.faq-kontaktlinsen.de http://www.parfuem-faq.de - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat 5.5 will not reload exploded applications when a class is recompiled
Hello and thanks for the reply, The unpackwar is already set at true... Any other idea? Julien. 2006/1/13, Jarrar Hussain [EMAIL PROTECTED]: Hello Julien, What about the unpackWARs attribute (in server.xml)? I think its also need to be true. Regards, Jarrar. Julien Martin wrote: Hello, I have the following problem: Tomcat 5.5 will not reload exploded applications when a class is recompiled. Is there any modification to be applied to Tomcat. Note that my autodeploy attribute is set to true(host) and that my reloadable attribute is also set to true(context). Any clue very welcome, Julien. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: forwarding JDOM-Objects
David Delbecq schrieb: Your class in not available for your servlet. Check in you war that com/softwareag/tamino/db/api/accessor/TInsertException is either in WEB-INF/classes, either in a .jar in WEB-INF/lib Mercy, this was really the problem. After I copied all .jar-files I need into the lib-folder I only get this error: java.lang.NullPointerException com.softwareag.tamino.db.api.objectModel.TXMLObjectFactory.newXMLObject(Unknown Source) com.softwareag.tamino.db.api.objectModel.TXMLObject.newInstance(Unknown Source) DatenbankEingabe.doGet(DatenbankEingabe.java:29) javax.servlet.http.HttpServlet.service(HttpServlet.java:740) javax.servlet.http.HttpServlet.service(HttpServlet.java:853) But why, a NullPointerException ? The servlet gets now all it need and the XMLObject is part of TaminoAPI4J.jar! I have no clue, what is the cause of this exception. Gruss Christian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: concurrency of users on tomcat
From: vishwas kharajge [mailto:[EMAIL PROTECTED] Our requirement is to provide 200 concurrent hits per second There are 300K users registration on the server For this what is the requirement? Hiring someone who can do the calculations. How much bandwidht it require for giving above concurrency? If you are serving (eg) the old homepage to www.purple.com, around 200 x 1kbyte/sec - call it 2Mbit/s. If you are serving (eg) large PDFs or images, very much more than that. It is *impossible* for anyone on this list to answer that question without detailed knowledge of your application. If you're not comfortable doing the calculation yourselves, hire someone who is. - Peter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: PreparedStatement w/ Connection Pooling
Let me just ask one simple question: Have you benchmarked your queries with prepared and unprepared statements to see if there is really a performance difference? Many people blindly follow common knowledge about performance, and this common knowledge is often wrong. People waste time and energy creating optimized solutions to issues that weren't broken. If you were my employee, I would first tell you to prove to me that there is a genuine difference, and that the difference was large enough to justify the additional maintainability/stability issues that might arise out of any solution. Lord Kelvin said: If you can not measure it, you can not improve it. George Sexton MH Software, Inc. http://www.mhsoftware.com/ Voice: 303 438 9585 -Original Message- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Thursday, January 12, 2006 11:12 PM To: Tomcat Users List Subject: Re: PreparedStatement w/ Connection Pooling I am guessing the main attribute to change is the following: poolPreparedStatements=true Suppose that this is set to true, how do I access these pooled statement? My setup is exactly as you described, so this modification seems minor, but I would appreciate guidance on how to get a hold of these pooled prepared statement. Thanks for your help. Sincerely, Khawaja Shams On 1/12/06, Marc Richards [EMAIL PROTECTED] wrote: If you're already using pooling then I imagine you already have a resource defined for the pool in either server.xml or in the context xml file. To pool prepared statements, which is desireable, you should configure it to look something like this in Tomcat 5.5: Resource type=javax.sql.DataSource auth=container name=jdbc/cPool username=user password=pwd driverClassName=com.ibm.as400.access.AS400JDBCDriver url=jdbc:as400://serverName;extended dynamic=true;package library=pkgLib;package=pkgName;package add=true;package cache=true initialSize=5 removeAbandoned=true removeAbandonedTimeout=600 maxActive=0 maxIdle=10 minIdle=2 maxWait=10 poolPreparedStatements=true logAbandoned=false / Note that in this example I'm using an IBM iSeries DB2 database driver, not my sql, but the rest of the config should be close to the same with the exception that on a production machine you'll want to have your initialSize, maxIdle and minIdle set much higher depending on the number of concurrent connections that you expect to make. Also note the url parameter - DB2's jdbc driver and database support dynamic package support with prepared statements, which can sometimes offer huge sql performance gains due to the system's ability to offer better optimization for prepared statements and cache the optimization so that the SQL optimizer need not be initialized for every subsequent statement. I don't know if my sql supports this or not, but you would definitely want to look into it. Lastly, note that this configuration is only applicable to Tomcat 5.5 and possibly later versions. Tomcat 5.0 and previous require a different syntax, using a more structured xml format, which can be reviewed here: http://tomcat.apache.org/tomcat-5.0-doc/jndi-datasource-exampl es-howto.html The best possible database configuration is as described above - using connection pooling with prepared statements and SQL package support - in cases where stored procedures are more difficult to manage. Stored procedures work great when you have several queries that are required to run in sequence (and usually offer better performance in such cases), but may end up a tad overkill from a maintenance perspective when you have a few isolated queries here and there. -marc --- George Sexton [EMAIL PROTECTED] wrote: Generally speaking, if you were using most SQL databases the approach would be to use a stored procedure. The stored procedure compilation saves the various query plans as part of the data of the stored procedure. I doubt MySQL does it, but you could ask on their development list. George Sexton MH Software, Inc. http://www.mhsoftware.com/ Voice: 303 438 9585 -Original Message- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Thursday, January 12, 2006 2:19 PM To: Tomcat Users List Subject: PreparedStatement w/ Connection Pooling Hello all, I am working on a web application that will manage assignments/students/classes for the teachers at a school. Most of my pages in the application need to access our mysql database very frequently. For this and for other security reason, I would like to use preparedStatements. However, from what I understand, preparedStatement are prepared on
help for OutOfMemoryError
Hi everyone, Can anyone help me that why I am getting this error : 2006-01-13 09:50:11 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception java.lang.OutOfMemoryError: Java heap space Qaiser - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: help for OutOfMemoryError
http://tomcat.apache.org/faq/memory.html#why -Tim Qaiser Mehmood wrote: Hi everyone, Can anyone help me that why I am getting this error : 2006-01-13 09:50:11 StandardWrapperValve[action]: Servlet.service() for servlet action threw exception java.lang.OutOfMemoryError: Java heap space - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Small connection problems with JK 1.2.15 and IIS 5
myrealbruno wrote: Sorry - the message was cut for some reason. I was also saying that one that decides to use XP Pro for a production machine should be shot (and you could reply that everyone that decides to use Windows should be shot :-) In the end I was only suggesting a global setting for the JK redirector, I had to add cachesize=something to every one of my workers (30). Why do you have 30 workers? The worker should reflect a physical connection to the backend server. It would only make sense if you'd have 30 Tomcats behing. And also wondering what the maximum would be for an average (production) server, I now have around 30*30 connections. It depends on your client load, but I would say that 200 is more then enough for a single box and an average application. See: http://people.apache.org/~mturk/docs/article/ftwai.html Regards, Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Realms
Hello, I decided to give 5.5.15 a try and I am not able to get any Realm implementation to work except for MemoryRealm. This is the same issue that I have been having in 5.5.14. I can confirm that Datasource/JDBC/JaasRealm all do not work in 5.5.15. Any one else having Realm issues since 5.5.10 or am I just a crazy voice in the dark? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Image Scaling Code
On Fri, 13 Jan 2006, Wouter Boers wrote:
That was the old way to fix a bug in the JVM I believe. Anyways nowadays you
can pass the following option to the server when starting:
-Djava.awt.headless=true
This page seems to summarize it all ...
http://tomcat.apache.org/faq/unix.html
snip
How do I run without an X server and still get graphics?
You either need to run headless or run an alternate X-server. Some more
information can be found here , here , or here .
Or if your are using a JVM 1.4 or better, you can use the system property
java.awt.headless=true
/snip
That will prevent the errors mentioned below when you don't have a graphical
shell running on your system.
Regards, Wouter
-Original Message-
From: Ben Kim [mailto:[EMAIL PROTECTED]
Sent: Friday, January 13, 2006 7:54 AM
To: Tomcat Users List
Subject: Re: Image Scaling Code
This may or may not be the case with you.
I had a similar error (X11, DISPLAY) with an earlier version of tomcat
included in a 3rd party package, on linux.
After I installed Xvfb (x virtual frame buffer) server rpm, the error went
away. (http://www.xfree86.org/4.0.1/Xvfb.1.html) I think there was a clue in
the error log.
If you're on Fedora, you can just do yum install xorg-x11-Xvfb or do yum
search Xvfb. I don't think I had to run it actually.
Don't know if it will help you, but just in case.
Regards,
Ben Kim
Developer
http://benix.tamu.edu
On 1/12/06, Justin Jaynes [EMAIL PROTECTED] wrote:
Hello all,
I've written a java class to scale jpeg images. But I can't seem to
get it to work. Can anyone point me in the right direction?
Here is my code:
package com.everybuddystree;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
public class ImageScaler {
public ImageScaler() {
}
public boolean scaleImageByWidth(String fileName, int newWidth) {
File originalImage = new File(fileName);
try {
BufferedImage workingBufferedImage = ImageIO.read(originalImage);
int width = workingBufferedImage.getWidth();
int height = workingBufferedImage.getHeight();
Image workingImage = workingBufferedImage;
workingImage = (Image)workingImage.getScaledInstance(newWidth,-1,1);
BufferedImage finalImage = (BufferedImage)workingImage;
ImageIO.write(finalImage, jpg, originalImage);
return true;
} catch (IOException ex){
return false;
}
}
}
When I run the pass an image to the class using a jsp I get the
following errors from Tomcat:
HTTP Status 500 -
-
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
javax.servlet.ServletException: Can't connect to X11 window server
using ':0.0' as the value of the DISPLAY variable.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(
PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:781) org.apache.jsp.image_jsp._jspService(
org.apache.jsp.image_jsp:158)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root
cause
java.lang.InternalError: Can't connect to X11 window server using ':0.0'
as the value of the DISPLAY variable.
sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java
:53) sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java
:142) java.security.AccessController.doPrivileged(Native Method)
sun.awt.X11GraphicsEnvironment.clinit(X11GraphicsEnvironment.java:13
1) java.lang.Class.forName0(Native Method) java.lang.Class.forName(
Class.java:164)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(
GraphicsEnvironment.java:68)
sun.awt.X11.XToolkit.clinit(XToolkit.java
:96) java.lang.Class.forName0(Native Method)
java.lang.Class.forName(
Class.java:164) java.awt.Toolkit$2.run(Toolkit.java:821)
java.security.AccessController.doPrivileged(Native Method)
java.awt.Toolkit.getDefaultToolkit(Toolkit.java:804)
java.awt.Image.getScaledInstance(Image.java:158)
com.everybuddystree.ImageScaler.scaleImageByWidth(ImageScaler.java:21)
org.apache.jsp.image_jsp._jspService(org.apache.jsp.image_jsp:114)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
java
:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java
:314)
Cannot find servlet
Sigh, I don't know why I keep having problems like this. I have the
following servlet:
package rex;
/*
* Copyright 2006, Heavyweight Software. All rights reserved.
*/
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import rex.IdxFileConverter;
/**
* servlet to simply launch the rex conversion process
*/
public final class LaunchRex extends HttpServlet
{
Boring stuff here...
}
Here is my web.xml file:
?xml version=1.0 encoding=ISO-8859-1?
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd;
version=2.4
display-nameLaunches the REX converter/display-name
description
Launches the REX converter
/description
servlet
servlet-nameLaunchRex/servlet-name
servlet-class
rex.LaunchRex
/servlet-class
/servlet
servlet-mapping
servlet-nameLaunchRex/servlet-name
url-pattern/LaunchRex/url-pattern
/servlet-mapping
/web-app
I have stored LaunchRex.class in rex.jar file in the lib directory of my
webapp. When I access http://localhost:81/rex/LaunchRex I get this error:
javax.servlet.ServletException: Wrapper cannot find servlet class rex.LaunchRex
or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
I'm not sure where to look next. Help?
Thanks.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
--
In every revolution, there is one man with a vision.--Jerome Bixby
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Re: Cannot find servlet
--- Thom Hehl [EMAIL PROTECTED] wrote:
Sigh, I don't know why I keep having problems like
this. I have the
following servlet:
package rex;
/*
* Copyright 2006, Heavyweight Software. All rights
reserved.
*/
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import rex.IdxFileConverter;
/**
* servlet to simply launch the rex conversion
process
*/
public final class LaunchRex extends HttpServlet
{
Boring stuff here...
}
Here is my web.xml file:
?xml version=1.0 encoding=ISO-8859-1?
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd;
version=2.4
display-nameLaunches the REX
converter/display-name
description
Launches the REX converter
/description
servlet
servlet-nameLaunchRex/servlet-name
servlet-class
rex.LaunchRex
/servlet-class
/servlet
servlet-mapping
servlet-nameLaunchRex/servlet-name
url-pattern/LaunchRex/url-pattern
/servlet-mapping
/web-app
I have stored LaunchRex.class in rex.jar file in the
lib directory of my
webapp. When I access
http://localhost:81/rex/LaunchRex I get this error:
javax.servlet.ServletException: Wrapper cannot find
servlet class rex.LaunchRex or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
I'm not sure where to look next. Help?
Thanks.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
Well, there isn't really a lot to go on here. My
guess would be that you have put the class file in the
jar, but didn't put the package and class in the jar.
Meaning: If you extract your jar using a zip utility
the top level would have simply LaunchRex.class when
it should have rex/LaunchRex.class.
Wade
-
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Re: Cannot find servlet
I verified this and the class is correctly stored in the jar. I'm really
stumped on this one.
Wade Chandler wrote:
--- Thom Hehl [EMAIL PROTECTED] wrote:
Sigh, I don't know why I keep having problems like
this. I have the
following servlet:
package rex;
/*
* Copyright 2006, Heavyweight Software. All rights
reserved.
*/
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import rex.IdxFileConverter;
/**
* servlet to simply launch the rex conversion
process
*/
public final class LaunchRex extends HttpServlet
{
Boring stuff here...
}
Here is my web.xml file:
?xml version=1.0 encoding=ISO-8859-1?
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd;
version=2.4
display-nameLaunches the REX
converter/display-name
description
Launches the REX converter
/description
servlet
servlet-nameLaunchRex/servlet-name
servlet-class
rex.LaunchRex
/servlet-class
/servlet
servlet-mapping
servlet-nameLaunchRex/servlet-name
url-pattern/LaunchRex/url-pattern
/servlet-mapping
/web-app
I have stored LaunchRex.class in rex.jar file in the
lib directory of my
webapp. When I access
http://localhost:81/rex/LaunchRex I get this error:
javax.servlet.ServletException: Wrapper cannot find
servlet class rex.LaunchRex or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
I'm not sure where to look next. Help?
Thanks.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
Well, there isn't really a lot to go on here. My
guess would be that you have put the class file in the
jar, but didn't put the package and class in the jar.
Meaning: If you extract your jar using a zip utility
the top level would have simply LaunchRex.class when
it should have rex/LaunchRex.class.
Wade
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
--
In every revolution, there is one man with a vision.--Jerome Bixby
-
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Re: PreparedStatement w/ Connection Pooling
Hello, Benchmarking is precisely what I am trying to do. However, if I prepare a statement every time I need to execute the statement, it would not be an accurate measurement of optimizations that preparedStatements can offer. In fact, this would probably be worse than just executing the statement once and for all. This is why I am wondering if this is possible so I can test for performance before integrating this with our solution. PreparedStatement can POTENTIALLY offer a great deal of optimizations, if used PROPERLY. Also, from what I have read so far, pre compiled statements do a very nice job of preventing SQL Injections. I am certainly open to hearing better suggestions from you. Although you sound like a manager, kindly note that I am not your employee. Sincerely, Khawaja Shams On 1/13/06, George Sexton [EMAIL PROTECTED] wrote: Let me just ask one simple question: Have you benchmarked your queries with prepared and unprepared statements to see if there is really a performance difference? Many people blindly follow common knowledge about performance, and this common knowledge is often wrong. People waste time and energy creating optimized solutions to issues that weren't broken. If you were my employee, I would first tell you to prove to me that there is a genuine difference, and that the difference was large enough to justify the additional maintainability/stability issues that might arise out of any solution. Lord Kelvin said: If you can not measure it, you can not improve it. George Sexton MH Software, Inc. http://www.mhsoftware.com/ Voice: 303 438 9585 -Original Message- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Thursday, January 12, 2006 11:12 PM To: Tomcat Users List Subject: Re: PreparedStatement w/ Connection Pooling I am guessing the main attribute to change is the following: poolPreparedStatements=true Suppose that this is set to true, how do I access these pooled statement? My setup is exactly as you described, so this modification seems minor, but I would appreciate guidance on how to get a hold of these pooled prepared statement. Thanks for your help. Sincerely, Khawaja Shams On 1/12/06, Marc Richards [EMAIL PROTECTED] wrote: If you're already using pooling then I imagine you already have a resource defined for the pool in either server.xml or in the context xml file. To pool prepared statements, which is desireable, you should configure it to look something like this in Tomcat 5.5: Resource type=javax.sql.DataSource auth=container name=jdbc/cPool username=user password=pwd driverClassName=com.ibm.as400.access.AS400JDBCDriver url=jdbc:as400://serverName;extended dynamic=true;package library=pkgLib;package=pkgName;package add=true;package cache=true initialSize=5 removeAbandoned=true removeAbandonedTimeout=600 maxActive=0 maxIdle=10 minIdle=2 maxWait=10 poolPreparedStatements=true logAbandoned=false / Note that in this example I'm using an IBM iSeries DB2 database driver, not my sql, but the rest of the config should be close to the same with the exception that on a production machine you'll want to have your initialSize, maxIdle and minIdle set much higher depending on the number of concurrent connections that you expect to make. Also note the url parameter - DB2's jdbc driver and database support dynamic package support with prepared statements, which can sometimes offer huge sql performance gains due to the system's ability to offer better optimization for prepared statements and cache the optimization so that the SQL optimizer need not be initialized for every subsequent statement. I don't know if my sql supports this or not, but you would definitely want to look into it. Lastly, note that this configuration is only applicable to Tomcat 5.5 and possibly later versions. Tomcat 5.0 and previous require a different syntax, using a more structured xml format, which can be reviewed here: http://tomcat.apache.org/tomcat-5.0-doc/jndi-datasource-exampl es-howto.html The best possible database configuration is as described above - using connection pooling with prepared statements and SQL package support - in cases where stored procedures are more difficult to manage. Stored procedures work great when you have several queries that are required to run in sequence (and usually offer better performance in such cases), but may end up a tad overkill from a maintenance perspective when you have a few isolated queries here and there. -marc --- George Sexton [EMAIL PROTECTED] wrote: Generally speaking, if you were using most SQL
Re: Changing default web apps
Hello, this suggestion is a great short cut. However, I have a datasource defined in conf/Catalina/localhost/MyApp.xml. Is there any way to access this datasource without declaring it here? I tried declaring a global datasource in server.xml, but the only way I figured out how to use it was by putting a local reference to the resource in my local context. I would aprpeciate any help. Best Regards, Khawaja Shams On 1/12/06, Dennis Leary [EMAIL PROTECTED] wrote: The simplist way is to rename your app to ROOT. If read about creating a ROOT.xml in conf/Catalina/localhost and pointing the docbase to your webapp by I didn't have much luck with it. - Original Message - From: Marco Rossi [EMAIL PROTECTED] To: Tomcat Users List users@tomcat.apache.org Sent: Thursday, January 12, 2006 11:27 AM Subject: Re: Changing default web apps Ok for list archive http://wiki.apache.org/tomcat/HowTo#head-e82228c43a0ce77f71ebe64fc99ced33c9506ffe Marco Rossi [EMAIL PROTECTED] wrote: Hi all, I'm trying to deploy a single web app to serve a whole web site on port 80. I'm able (finally:-) to use jsv to redirect port 80 to 8080, but I'm wish to chanche the default application that listen on port 8080. I noticed that the files to be server are coming from webapps/ROOT, how can I set as default webappas/MyApp/index.jsp in tomcat 5.5.12 ? Thanks - Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP. - Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[Fwd: Re: Cannot find servlet]
I tried uncompressing the jar file into the classes directory, but it
didn't change anything. Anyone have any ideas for me to look at? I don't
know what's up.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
--
In every revolution, there is one man with a vision.--Jerome Bixby
---BeginMessage---
I verified this and the class is correctly stored in the jar. I'm really
stumped on this one.
Wade Chandler wrote:
--- Thom Hehl [EMAIL PROTECTED] wrote:
Sigh, I don't know why I keep having problems like
this. I have the
following servlet:
package rex;
/*
* Copyright 2006, Heavyweight Software. All rights
reserved.
*/
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import rex.IdxFileConverter;
/**
* servlet to simply launch the rex conversion
process
*/
public final class LaunchRex extends HttpServlet
{
Boring stuff here...
}
Here is my web.xml file:
?xml version=1.0 encoding=ISO-8859-1?
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd;
version=2.4
display-nameLaunches the REX
converter/display-name
description
Launches the REX converter
/description
servlet
servlet-nameLaunchRex/servlet-name
servlet-class
rex.LaunchRex
/servlet-class
/servlet
servlet-mapping
servlet-nameLaunchRex/servlet-name
url-pattern/LaunchRex/url-pattern
/servlet-mapping
/web-app
I have stored LaunchRex.class in rex.jar file in the
lib directory of my
webapp. When I access
http://localhost:81/rex/LaunchRex I get this error:
javax.servlet.ServletException: Wrapper cannot find
servlet class rex.LaunchRex or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
I'm not sure where to look next. Help?
Thanks.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
Well, there isn't really a lot to go on here. My
guess would be that you have put the class file in the
jar, but didn't put the package and class in the jar.
Meaning: If you extract your jar using a zip utility
the top level would have simply LaunchRex.class when
it should have rex/LaunchRex.class.
Wade
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
--
In every revolution, there is one man with a vision.--Jerome Bixby
---End Message---
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RE: Changing default web apps
From: Khawaja Shams [mailto:[EMAIL PROTECTED] Subject: Re: Changing default web apps However, I have a datasource defined in conf/Catalina/localhost/MyApp.xml. Is there any way to access this datasource without declaring it here? Put your Context tag and everything inside it in webapps/ROOT/META-INF/context.xml instead. See near the end of: http://tomcat.apache.org/tomcat-5.5-doc/config/context.html for details. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
JK Apache2 Tomcat 5.0.28 Truncated Response
Hello, I'm having trouble with my Apache2/Tomcat 5 via JK setup. Most requests are completed fine, but large requests (large is over 64K) are truncated. I get a variable amount of data back. I'm testing this using wget (a simple command line http client). When I go directly to Tomcat, I get all 128K of data back every time. When I go through Apache, I get a different amount of data back every time (I've seen between 68K and 105K). I also have a stock version of Apache 1.3 on my OS X server, so I tested this out with that and everything worked fine. This leads me to believe that this is some issue with Apache2. (I'm not sure about all the versions that I was using in this test as I didn't install them.) At first I thought this was a JkShmSize issue. So I jacked this way up. But that didn't fix the problem. (I also noticed that there were a number of examples on the web that tried to configure this directive using a string like '10M'. This doesn't work. Or should it? When I looked at the code, I saw that it reads the value using atoi, then multiplies by 1024.) Here's what I've got: Mac OS X 10.4.3 Apache 2.0.52 MPM JK 2.0.14 (downloaded from http://www.apache.org/dist/tomcat/tomcat- connectors/jk/binaries/macosx/jk-1.2.14/jakarta-tomcat-connectors- jk-1.2.14-macosx-apache-2.0.54.so) Tomcat config: Connector port=8009 enableLookups=false redirectPort=8443 debug=0 protocol=AJP/1.3/ Apache config: JkWorkersFile /sw/etc/apache2/workers.properties JkLogFile /sw/var/apache2/logs/jk.log JkLogLevel info JkLogStampFormat [%a %b %d %H:%M:%S %Y] JkShmFile /sw/var/apache2/run/jk.shm JkShmSize 32768 JkMount /karta/* tomcat JkMount /kartaadmin/* tomcat Thanks for any help. I've been trying to figure tis one out for a few days now. Ian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Environmental Variables set
Hello, In a Spring application that is being deployed to Tomcat I need to be able to load a file. The file resides in the /WEB-INF folder of the webapp. Is there any environmental variables I can be sure will be set so I can open a file relative to Tomcat? Things like catalina.home or catalina.base, or is there a better alternative? Thanks for any and all input -Zach - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [Fwd: Re: Cannot find servlet]
As we all suspected, I was, in fact, being an idiot. My lib directory
was under the rex directory, not under rex/WEB-INF. I've been looking at
this for hours and it just never sunk in.
Must be tired. Been a long week. Thanks!
Thom Hehl wrote:
I tried uncompressing the jar file into the classes directory, but it
didn't change anything. Anyone have any ideas for me to look at? I
don't know what's up.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
Subject:
Re: Cannot find servlet
From:
Thom Hehl [EMAIL PROTECTED]
Date:
Fri, 13 Jan 2006 14:44:13 -0500
To:
Tomcat Users List users@tomcat.apache.org
To:
Tomcat Users List users@tomcat.apache.org
I verified this and the class is correctly stored in the jar. I'm
really stumped on this one.
Wade Chandler wrote:
--- Thom Hehl [EMAIL PROTECTED] wrote:
Sigh, I don't know why I keep having problems like
this. I have the following servlet:
package rex;
/*
* Copyright 2006, Heavyweight Software. All rights
reserved.
*/
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import rex.IdxFileConverter;
/**
* servlet to simply launch the rex conversion
process
*/
public final class LaunchRex extends HttpServlet
{
Boring stuff here...
}
Here is my web.xml file:
?xml version=1.0 encoding=ISO-8859-1?
web-app xmlns=http://java.sun.com/xml/ns/j2ee;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd;
version=2.4
display-nameLaunches the REX
converter/display-name
description
Launches the REX converter
/description
servlet
servlet-nameLaunchRex/servlet-name
servlet-class
rex.LaunchRex
/servlet-class
/servlet
servlet-mapping
servlet-nameLaunchRex/servlet-name
url-pattern/LaunchRex/url-pattern
/servlet-mapping
/web-app
I have stored LaunchRex.class in rex.jar file in the
lib directory of my webapp. When I access
http://localhost:81/rex/LaunchRex I get this error:
javax.servlet.ServletException: Wrapper cannot find
servlet class rex.LaunchRex or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)
I'm not sure where to look next. Help?
Thanks.
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
Well, there isn't really a lot to go on here. My
guess would be that you have put the class file in the
jar, but didn't put the package and class in the jar. Meaning: If you
extract your jar using a zip utility
the top level would have simply LaunchRex.class when
it should have rex/LaunchRex.class.
Wade
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Thom Hehl
Heavyweight Software for Heavyweight Needs
www.heavyweightsoftware.com
--
In every revolution, there is one man with a vision.--Jerome Bixby
-
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RE: PreparedStatement w/ Connection Pooling
I've looked at the CVS HEAD for PoolingConnection...
http://cvs.apache.org/viewcvs.cgi/jakarta-commons/dbcp/src/java/org/apache/c
ommons/dbcp/PoolingConnection.java?view=markup
public synchronized PreparedStatement prepareStatement(String sql) throws
SQLException {
try {
return(PreparedStatement)(_pstmtPool.borrowObject(createKey(sql)));
From this code, I surmise the following:
When you do multiple calls to prepareStatement(foo), where 'foo' contains
the same SQL string, then the PoolingConnection object will automatically
give you back a previously pooled preparedstatement. So the answer to you
question: how do I access these pooled statement? might be as simple as
don't worry about it, just use the prepareStatement() API and DBCP handles
it for you.
I don't know for sure and you'll probably get more traction asking this
specific question on the commons-user email list. And uh.. I probably coulda
just started there...
http://marc.theaimsgroup.com/?l=jakarta-commons-userm=112975440702682w=2
-Original Message-
From: Khawaja Shams [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 12, 2006 11:12 PM
To: Tomcat Users List
Subject: Re: PreparedStatement w/ Connection Pooling
I am guessing the main attribute to change is the following:
poolPreparedStatements=true
Suppose that this is set to true, how do I access these pooled
statement? My setup is exactly as you described, so this
modification seems minor, but I
would appreciate guidance on how to get a hold of these
pooled prepared
statement. Thanks for your help.
Sincerely,
Khawaja Shams
-
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Secure Tomcat replication for WAN
Has anyone implemented some replication strategy for Tomcat on WAN. It is my understanding that the regular replication mechanism that broadcasts invitations over UDP is not very suitable for this as it would broadcast to too many listeners as well as create a security risks. Also, to the best of my knowledge a static list of listeners has not been implemented yet. I attempted to test replication via a SSH tunnel and setting the replication address 127.0.0.1 yet different ports before, but somehow could not make it work. Has anyone implemented any workable solutions for this they are willing to share? Or am I missing any recent development in Tomcat replication? I am currently using 5.5.12 and soon will be using 5.5.15. Any ideas or references would be greatly appreciated. TIA, Ed - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Small connection problems with JK 1.2.15 and IIS 5
Why do you have 30 workers? The worker should reflect a physical connection to the backend server. It would only make sense if you'd have 30 Tomcats behing. Yes, I do, that's why I was asking.. :-) It depends on your client load, but I would say that 200 is more then enough for a single box and an average application. See: http://people.apache.org/~mturk/docs/article/ftwai.html Thanks a lot, br1. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Unable to override doPut(), etc, from Tomcat's JSPServlet (response 403)
Tim Funk wrote:
You cannot add a doPut() to your servlet and excpect it to work. But in
your JSP, you can do this:
// The following worked fine with tomcat 5.0.28 (plus unrelated patches)
if(PUT.equals(request.getMethod()) {
/*put code*/
} else {
/*not put code*/
}
JSP's declare Servlet.service() as final. Then they call _jspService()
(which is created during JSP compilation). So doYYY() is never called.
-Tim
Well, I still agree about the method override... but as I test it now, I
still get a 403 response, even if I intercept and dispatch PUT from
inside the _jspService method... and it stands to reason that the
request isn't even making it to the JSP's service method, if a 403 is
being returned.. So something else is causing this behavior it seems.
Perhaps tomcat 5 outright prohibits PUT and other methods from even
getting to _jspService (or JspServlet in general)?? This wasn't the case
in tomcat 4; it did allow me to do this..
Ken
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Deploying New Context Descriptor from Within Webapp
Hello- I am creating a first-run configuration wizard for a webapp; it would be something similiar to OpenCMS' installer. When first deployed the application has a minimal web.xml and context.xml but after a user uses the setup form to enter their database user name and passwords the web.xml and context.xml are updated. The WEB-INF/web.xml seems to be reloaded by Tomcat just fine. However the META-INF/context.xml doesn't get re-read. Thus the application is unusable since my Realm and JNDI Datasource are missing. To work around the issue I could write the context.xml directly to Catalina/localhost/ however this solution seems like it would be brittle since I am assuming the host and engine. Is there a recommended way to reload or redeploy the context on a running Tomcat instance? Or a better solution to creating a setup wizard that must setup Realm based auth? Thanks, Brandon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: PreparedStatement w/ Connection Pooling
The primary performance benefit to be gained from prepared statements is from the SQL package that some DB systems support. Your first step would be to investigate this with your DB and find out if package support is offered - if not, prepared statements will probably offer you some organizational and security benefit but little more. SQL package support works like so: When a prepared statement is passed to the DB the sql optimizer kicks in and figures out the best way to run the query. If the query is a prepared statement rather then just an SQL string, the optimizer takes a bit more time on this procss to ensure that it's done it right. Then it writes the prepared statement and the optimization results to a cache file where it will remain until the optimizer decides that it requires updating. On every call afterward with the same prepared statement, the optimizer doesn't need to kick in, it just uses the optimization from the cache. You definitely see a performance gain when this happens, especially under heavy load because that is the condition under which memory and processing power are taxed and less available for the optimizer. Again, I use DB2 on iSeries and it supports SQL packages but I don't know what other platforms (if any) also support them. To answer your original question, using the connection pool once it is set up in Tomcat is as simple as accessing the JNDI datasource within your code - dbcp handles the rest for you automatically. You will know that you've done it correctly if you display network resources and see only the number of connections to the DB as you have configured for the pool. However, at Tomcat's startup you may see some additional connections that Tomcat used to authenticate to the DB if you have security set up and you may also see another spare connection in there if you're using session persistance to the same db. So for example, if everything is working correctly, on a Windows box you could do a netstat -a from cmd prompt and see a list of open tcp connections (you can do this on other platforms too, but I don't know the exact syntax on any other then windows). You should see the name or IP address of your db in there several times. If you configured your pool to use 5 db connections to start with, you should see 5 ESTABLISHED connections to the db. If security is set up you may also see several connections to the db on TIME-WAIT (or some variant syntax). These will go away in a short time. Now if you open a browser and click around your webapp a few times, ensuring that you have caused some db accesses you should be able to do netstat -a again and still see only the same 5 connections as before. If there are more TIME-WAIT connections than there were previously, something is wrong and connection pooling is not being used properly. -marc --- Khawaja Shams [EMAIL PROTECTED] wrote: Hello, Benchmarking is precisely what I am trying to do. However, if I prepare a statement every time I need to execute the statement, it would not be an accurate measurement of optimizations that preparedStatements can offer. In fact, this would probably be worse than just executing the statement once and for all. This is why I am wondering if this is possible so I can test for performance before integrating this with our solution. PreparedStatement can POTENTIALLY offer a great deal of optimizations, if used PROPERLY. Also, from what I have read so far, pre compiled statements do a very nice job of preventing SQL Injections. I am certainly open to hearing better suggestions from you. Although you sound like a manager, kindly note that I am not your employee. Sincerely, Khawaja Shams On 1/13/06, George Sexton [EMAIL PROTECTED] wrote: Let me just ask one simple question: Have you benchmarked your queries with prepared and unprepared statements to see if there is really a performance difference? Many people blindly follow common knowledge about performance, and this common knowledge is often wrong. People waste time and energy creating optimized solutions to issues that weren't broken. If you were my employee, I would first tell you to prove to me that there is a genuine difference, and that the difference was large enough to justify the additional maintainability/stability issues that might arise out of any solution. Lord Kelvin said: If you can not measure it, you can not improve it. George Sexton MH Software, Inc. http://www.mhsoftware.com/ Voice: 303 438 9585 -Original Message- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Thursday, January 12, 2006 11:12 PM To: Tomcat Users List Subject: Re: PreparedStatement w/ Connection Pooling I am guessing the main attribute to change is the following: poolPreparedStatements=true Suppose that this is set to true, how do I access these pooled statement? My
RE: connection pooling mysql (Pool Exhausted exception)
I received a similar (identical?) error when I was first starting up, and the solution was to be very careful to ALWAYS close ResultSets. ResultSet rset = stmt.executeQuery(select foo from bar where ID=7); int foo = rset.getInt(1); rset.close(); -Original Message- From: Khawaja Shams [mailto:[EMAIL PROTECTED] Sent: Thursday, January 12, 2006 4:14 PM To: Tomcat Users List Subject: connection pooling mysql (Pool Exhausted exception) Hello, I am consistently getting exceptions about my connection pool being exhausted in my application. I am curious where I can configure the number of connections tomcat should maintain in the connection pool. Lastly, am I right in assuming that the only thing I need to do in order to return a connection to the pool is to return to close the connection? Do I have to do anything about the statements I have created using that connection? Thanks in advance. for your help. Best Regards, Khawaja Shams - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Question reg. setting the environment variable
thanks for the great help.finally, i'd installed n currently running it successfully. i've one more query: previously i'd installed Tomcat 5.5 with jdk-1_5_0_02-windows-i586-p-iftw,but was facing many problems as everytime i run it on the localhost, everytime the page cannot be displayed problem was coming?kindly tell me why such kind of problem was arising and which version of jdk should be installed for it? Regards, Vidhi vineesh kumar [EMAIL PROTECTED] wrote: which windows version u r using? Usually u can right click on start-controlpanel- system select the ADVANCED tab then click the environmental variables at the bottom and enter ur calsspath and all On 1/13/06, gupta vidhi wrote: hello, i'd installed jdk-1_5_0_02-windows-i586-p-iftw and jakarta-tomcat-4.1.31 on desktop.but unable to set its required path.i request u to kindly help me out for the same and starting my Tomcat. Regards, Vidhi - Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - Yahoo! Photos Ring in the New Year with Photo Calendars. Add photos, events, holidays, whatever.
Re: Question reg. setting the environment variable
thanks for the great help.finally, i'd installed n currently running it successfully. i've one more query: previously i'd installed Tomcat 5.5 with jdk-1_5_0_02-windows-i586-p-iftw,but was facing many problems as everytime i run it on the localhost, everytime the page cannot be displayed problem was coming?kindly tell me why such kind of problem was arising and which version of jdk should be installed for it? Regards, Vidhi vineesh kumar [EMAIL PROTECTED] wrote: which windows version u r using? Usually u can right click on start-controlpanel- system select the ADVANCED tab then click the environmental variables at the bottom and enter ur calsspath and all On 1/13/06, gupta vidhi wrote: hello, i'd installed jdk-1_5_0_02-windows-i586-p-iftw and jakarta-tomcat-4.1.31 on desktop.but unable to set its required path.i request u to kindly help me out for the same and starting my Tomcat. Regards, Vidhi - Yahoo! Photos Got holiday prints? See all the ways to get quality prints in your hands ASAP. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - Yahoo! Photos Showcase holiday pictures in hardcover Photo Books. You design it and well bind it!
Easiest Open Source Shopping Cart Fnctnlty to plug into Tomcat
Hello folks I was wondering whether someone can point me in the direction of some Open Source Shopping Cart type functionality I can easily plug-in to Tomcat and integrate into a site please? I found a few on Google, but have no idea which does what and how complex , etc. Can you offer guidance please? -- Kind Regards Kyle - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Unable to override doPut(), etc, from Tomcat's JSPServlet (response 403)
There's a comment in the web.xml settings for the default servlet: !-- readonly Is this context read only, so HTTP -- !-- commands like PUT and DELETE are -- !-- rejected? [true]-- Is there any possibility that you're actually getting into the default servlet rather than your own? - Chuck Yes Sir, that was the answer!! It works in write-mode now. Apparently that setting must be made on the DefaultServlet. I didn't think it would be required since I'm not 'defaulting' per se to that servlet, and based on its description (below) - I'd figured that declaring that readonly=false init param should work as an init config to JspServlet, though it did not. I'd misjudged the role of the DefaultServlet.. I guess the part that threw me (and may deserve some clarification / emphasis since there's a security context controlled by it) was the part where it says: The default servlet for all web applications, that serves static resources. It processes all requests that are not mapped to other servlets with servlet mappings (defined either here or in your own web.xml file The possibly misleading parts are serves static resources (should be static and dynamic?) and processes requests not mapped to another servlet with servlet mappings (but JspServlet is handling jsps, yet depends on this).. Should these observations be forwarded on to some particular tomcat developer? Again, thank you _very_ much for the pointer to DefaultServlet!! Best, Ken - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
How do you debug Authentication Problems
I have tomcat4 fronted by apache2 and linked via mod_jk. I am running well with basic applications, but up until now I have been manually loading applications. I tried to use the manager application, and it is asking me to authenticate myself. I have added myself into the manager role in the tomcat-users, but I get into a loop of authentication failures. As a TEMPORARY measure, I have added the authentication into the Apache configuration (inside a Location directive and removed it from the web.xml of the manager application. And that works. There is nothing in any of my standardly configured logs to indicate what is happening. But, given this effect of getting it to work when I delegate security control to Apache, I suspect that the front ending of tomcat with apache is playing some effect on the failures. It also explains why I could never get my application with user login to work and had to give up trying to build authentication into a web app. But what is the problem? and how do I debug this to get a clear picture of what is happening? Surely others have had the same issues - front ending Tomcat with apache must be a relatively frequent configuration - and have overcome them. -- Alan Chandler http://www.chandlerfamily.org.uk Open Source. It's the difference between trust and antitrust. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
