RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
I am using 4.0.1, so its possible that something may have changed, but see
intermixed.
-Original Message-
From: JavaJosh [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 19, 2002 4:08 PM
To: [EMAIL PROTECTED]
Subject: Where's my fish? How do I go fishing? (Tomcat 4.0)
Hello,
Tomcat 4.0.3 is apparently not reloading a recompiled
servlet. According
to the docs, this should be the default behavior.
Interestingly, it WILL load a new servlet.
I have 2 questions, of the where's my fish sort and of the how do I
fish sort.
Where's my fish: why isn't Tomcat reloading my changed servlet? I have
verified that the class file has changed by checking the timestamp, so
I'm pretty sure it's not a build problem.
your context needs to be set to reloadable=true.
I have noticed that it takes one request for Tomcat to realize the servlet
has changed, then the next request picks up the change. Sometimes I have to
wait 30 seconds or so for it to pick up the change(don't know why).
How do I fish: what is a reasonable way to troubleshoot this problem?
A message will appear in the log for your context when the reload is done.
This, of course, is provided that you have a logger for your host in
server.xml
While I would love to have a fish right now, I am perfectly willing to
learn how to fish and catch my own.
Some fishing I've already done:
1) tried restarting tomcat. Picks up the new class!
this is expected. You can also use manager to restart your context. While it
doesn't solve your problem, it is less painful than restarting tomcat.
2) tried restarting the browser. No go.
you may want to check your browser cache settings(request new version of
page on EVERY access)
3) examined the tomcat logs. Nothing interesting.
4) examined the servlet class file in the webapps dir. Yup, it sure
changed.
5) tried adding a second servlet. Tomcat picks it up!
6) tried changing the second servlet. No go.
I *suspect* that in the murky depths of this problem swims an enormous
caching flounder. Is its name Tomcat 4.0.3? Is it IE 5? Either way, I
want to hook it, filet it, and have it for dinner tonight.
Thanks for your help,
Josh Rehman
Here are some more facts for you:
Hardware: Dell Inspiron 7000 Laptop - P2-366 256M/10G
OS: MS Windows 2000 (NT5) Professional SP2 1024x768x64k
Java: Sun J2SE 1.3.1_01 - c:\java\jdk131
Tomcat: 4.0.3 - c:\java\jakarta-tomcat-4.0.3
%CATALINA_HOME%\conf\web.xml is stock
%CATALINA_HOME%\conf\server.xml is stock
Environment variables:
CATALINA_HOME=C:\java\jakarta-tomcat-4.0.3
JAVA_HOME=c:\java\jdk131_01
JIKES_HOME=c:\java\jikes114
ANT_HOME=c:\java\ant14
Project organization:
Deploy root: %CATALINA_HOME%\webapps\tomcat40
\WEB-INF\web.xml
\WEB-INF\classes\joshbrain\tomcat40\FirstServlet.class
\WEB-INF\classes\joshbrain\tomcat40\SecondServlet.class
Contents of web.xml:
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
display-nameTomcat 4.0.3 Evaluation Application/display-name
description
This is version 1.0 of a simple evaluation application
written by Josh Rehman ([EMAIL PROTECTED]).
/description
context-param
param-namewebmaster/param-name
param-value[EMAIL PROTECTED]/param-value
description
The EMAIL address of the administrator to whom questions
and comments about this application should be addressed.
/description
/context-param
servlet
servlet-namefirst/servlet-name
servlet-classjoshbrain.tomcat.FirstServlet/servlet-class
/servlet
servlet
servlet-namesecond/servlet-name
servlet-classjoshbrain.tomcat.SecondServlet/servlet-class
/servlet
servlet-mapping
servlet-namefirst/servlet-name
url-pattern/first/url-pattern
/servlet-mapping
servlet-mapping
servlet-namesecond/servlet-name
url-pattern/second/url-pattern
/servlet-mapping
session-config
session-timeout30/session-timeout!-- 30 minutes --
/session-config
/web-app
Contents of FirstServlet.java (SecondServlet similar):
/*
* FirstServlet.java
*
* Created on March 18, 2002, 4:56 PM
*/
package joshbrain.tomcat;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Josh Rehman
* @version
*/
public class FirstServlet extends HttpServlet
{
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException
{
response.setContentType(text/html);
java.io.PrintWriter out = response.getWriter();
out.println(html);
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
-Original Message- From: Cox, Charlie [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 5:09 AM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) ... your context needs to be set to reloadable=true. I have noticed that it takes one request for Tomcat to realize the servlet has changed, then the next request picks up the change. Sometimes I have to wait 30 seconds or so for it to pick up the change(don't know why). ... Forgive me, but I am not sure what tag to use to set reloadable. I searched spec and deployment descriptor DTD and came up only with SRV.3.7 (p.30). Is this a tomcat specific thing? Thanks, Josh Rehman _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
Forgive me, but I am not sure what tag to use to set reloadable file: %CATALINA_HOME%\conf\server.xml (or $CATALINA_HOME/conf/server.xml) tag: Context ... Regards, Ilya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
In esrver.xml: Context path=/yourcontextpath docBase=yourdocbase reloadable=true -Original Message- From: Ilya Khandamirov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 5:53 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Forgive me, but I am not sure what tag to use to set reloadable file: %CATALINA_HOME%\conf\server.xml (or $CATALINA_HOME/conf/server.xml) tag: Context ... Regards, Ilya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
Thanks. Where is this attribute documented? -Original Message- From: John Roth [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 2:59 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) In esrver.xml: Context path=/yourcontextpath docBase=yourdocbase reloadable=true -Original Message- From: Ilya Khandamirov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 5:53 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Forgive me, but I am not sure what tag to use to set reloadable file: %CATALINA_HOME%\conf\server.xml (or $CATALINA_HOME/conf/server.xml) tag: Context ... Regards, Ilya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
On Wed, 20 Mar 2002, JavaJosh wrote: Date: Wed, 20 Mar 2002 18:27:41 -0800 From: JavaJosh [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Thanks. Where is this attribute documented? Start up Tomcat, and go to: http://localhost:8080/tomcat-docs/config/context.html or look it up online at: http://jakarta.apache.org/tomcat/tomcat-4.0-doc/config/context.html Since you're fishing, you might want to peruse the rest of the Tomcat documentation that is included as well :-). Craig -Original Message- From: John Roth [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 2:59 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) In esrver.xml: Context path=/yourcontextpath docBase=yourdocbase reloadable=true -Original Message- From: Ilya Khandamirov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 5:53 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Forgive me, but I am not sure what tag to use to set reloadable file: %CATALINA_HOME%\conf\server.xml (or $CATALINA_HOME/conf/server.xml) tag: Context ... Regards, Ilya -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
Actually Craig, the first thing I did when I downloaded Tomcat was read the entire documentation tree, taking notes along the way. Thanks for the link. -Original Message- From: Craig R. McClanahan [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 6:34 PM To: Tomcat Users List Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) On Wed, 20 Mar 2002, JavaJosh wrote: Date: Wed, 20 Mar 2002 18:27:41 -0800 From: JavaJosh [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Thanks. Where is this attribute documented? Start up Tomcat, and go to: http://localhost:8080/tomcat-docs/config/context.html or look it up online at: http://jakarta.apache.org/tomcat/tomcat-4.0-doc/config/context.html Since you're fishing, you might want to peruse the rest of the Tomcat documentation that is included as well :-). Craig -Original Message- From: John Roth [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 2:59 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) In esrver.xml: Context path=/yourcontextpath docBase=yourdocbase reloadable=true -Original Message- From: Ilya Khandamirov [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 20, 2002 5:53 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) Forgive me, but I am not sure what tag to use to set reloadable file: %CATALINA_HOME%\conf\server.xml (or $CATALINA_HOME/conf/server.xml) tag: Context ... Regards, Ilya -- To unsubscribe: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands: mailto:tomcat-user- [EMAIL PROTECTED] Troubles with the list: mailto:tomcat-user- [EMAIL PROTECTED] -- To unsubscribe: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands: mailto:tomcat-user- [EMAIL PROTECTED] Troubles with the list: mailto:tomcat-user- [EMAIL PROTECTED] _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands: mailto:tomcat-user- [EMAIL PROTECTED] Troubles with the list: mailto:tomcat-user- [EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
If there is a JSP page either calling the servlet or the servlet includes or
forward to a JSP page, you may want to try to touch *.jsp in the dirs
containing the jsps.
HTH
-Original Message-
From: JavaJosh [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 19, 2002 4:08 PM
To: [EMAIL PROTECTED]
Subject: Where's my fish? How do I go fishing? (Tomcat 4.0)
Hello,
Tomcat 4.0.3 is apparently not reloading a recompiled servlet. According
to the docs, this should be the default behavior.
Interestingly, it WILL load a new servlet.
I have 2 questions, of the where's my fish sort and of the how do I
fish sort.
Where's my fish: why isn't Tomcat reloading my changed servlet? I have
verified that the class file has changed by checking the timestamp, so
I'm pretty sure it's not a build problem.
How do I fish: what is a reasonable way to troubleshoot this problem?
While I would love to have a fish right now, I am perfectly willing to
learn how to fish and catch my own.
Some fishing I've already done:
1) tried restarting tomcat. Picks up the new class!
2) tried restarting the browser. No go.
3) examined the tomcat logs. Nothing interesting.
4) examined the servlet class file in the webapps dir. Yup, it sure
changed.
5) tried adding a second servlet. Tomcat picks it up!
6) tried changing the second servlet. No go.
I *suspect* that in the murky depths of this problem swims an enormous
caching flounder. Is its name Tomcat 4.0.3? Is it IE 5? Either way, I
want to hook it, filet it, and have it for dinner tonight.
Thanks for your help,
Josh Rehman
Here are some more facts for you:
Hardware: Dell Inspiron 7000 Laptop - P2-366 256M/10G
OS: MS Windows 2000 (NT5) Professional SP2 1024x768x64k
Java: Sun J2SE 1.3.1_01 - c:\java\jdk131
Tomcat: 4.0.3 - c:\java\jakarta-tomcat-4.0.3
%CATALINA_HOME%\conf\web.xml is stock
%CATALINA_HOME%\conf\server.xml is stock
Environment variables:
CATALINA_HOME=C:\java\jakarta-tomcat-4.0.3
JAVA_HOME=c:\java\jdk131_01
JIKES_HOME=c:\java\jikes114
ANT_HOME=c:\java\ant14
Project organization:
Deploy root: %CATALINA_HOME%\webapps\tomcat40
\WEB-INF\web.xml
\WEB-INF\classes\joshbrain\tomcat40\FirstServlet.class
\WEB-INF\classes\joshbrain\tomcat40\SecondServlet.class
Contents of web.xml:
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
display-nameTomcat 4.0.3 Evaluation Application/display-name
description
This is version 1.0 of a simple evaluation application
written by Josh Rehman ([EMAIL PROTECTED]).
/description
context-param
param-namewebmaster/param-name
param-value[EMAIL PROTECTED]/param-value
description
The EMAIL address of the administrator to whom questions
and comments about this application should be addressed.
/description
/context-param
servlet
servlet-namefirst/servlet-name
servlet-classjoshbrain.tomcat.FirstServlet/servlet-class
/servlet
servlet
servlet-namesecond/servlet-name
servlet-classjoshbrain.tomcat.SecondServlet/servlet-class
/servlet
servlet-mapping
servlet-namefirst/servlet-name
url-pattern/first/url-pattern
/servlet-mapping
servlet-mapping
servlet-namesecond/servlet-name
url-pattern/second/url-pattern
/servlet-mapping
session-config
session-timeout30/session-timeout!-- 30 minutes --
/session-config
/web-app
Contents of FirstServlet.java (SecondServlet similar):
/*
* FirstServlet.java
*
* Created on March 18, 2002, 4:56 PM
*/
package joshbrain.tomcat;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Josh Rehman
* @version
*/
public class FirstServlet extends HttpServlet
{
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException
{
response.setContentType(text/html);
java.io.PrintWriter out = response.getWriter();
out.println(html);
out.println(head);
out.println(titleServlet/title);
out.println(/head);
out.println(body);
out.println(bThis is the string that will change!/b);
out.println(/body);
out.println(/html);
out.close();
}
protected void doGet(HttpServletRequest request, HttpServletResponse
response)
throws ServletException, java.io.IOException
{
processRequest(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException
{
processRequest(request, response);
}
}
My ant build script:
project name=Tomcat
Re: Where's my fish? How do I go fishing? (Tomcat 4.0)
Hello,
I just started fishing some weeks ago and I had similar difficulties.
I don't know if there is an elegant way to catch some nice fish, but I can
explain you the way I got it to work. I think it is a problem of Tomcats
caches. (Not really a problem, because once an application is developped,
the servlets won't change very often).
Tomcat has a ${tomcat-home}\work directory, were it keeps many files of wich
I do not really understand very much. But it happens that after I deleted
this directory (or a relevant subpath - for tomcat 3.2 this is something
like work\localhost_8080%2Fmyapplication), my changes to servlets were
visible. Sometimes a simple restart helped, too.
All this fishing experiance was done with Tomcat 3.3 and 3.2 but I think it
should be similar with Tomcat 4.
Have a fine fish meal.
Peter
Hello,
Tomcat 4.0.3 is apparently not reloading a recompiled servlet. According
to the docs, this should be the default behavior.
Interestingly, it WILL load a new servlet.
I have 2 questions, of the where's my fish sort and of the how do I
fish sort.
Where's my fish: why isn't Tomcat reloading my changed servlet? I have
verified that the class file has changed by checking the timestamp, so
I'm pretty sure it's not a build problem.
How do I fish: what is a reasonable way to troubleshoot this problem?
While I would love to have a fish right now, I am perfectly willing to
learn how to fish and catch my own.
Some fishing I've already done:
1) tried restarting tomcat. Picks up the new class!
2) tried restarting the browser. No go.
3) examined the tomcat logs. Nothing interesting.
4) examined the servlet class file in the webapps dir. Yup, it sure
changed.
5) tried adding a second servlet. Tomcat picks it up!
6) tried changing the second servlet. No go.
I *suspect* that in the murky depths of this problem swims an enormous
caching flounder. Is its name Tomcat 4.0.3? Is it IE 5? Either way, I
want to hook it, filet it, and have it for dinner tonight.
Thanks for your help,
Josh Rehman
Here are some more facts for you:
Hardware: Dell Inspiron 7000 Laptop - P2-366 256M/10G
OS: MS Windows 2000 (NT5) Professional SP2 1024x768x64k
Java: Sun J2SE 1.3.1_01 - c:\java\jdk131
Tomcat: 4.0.3 - c:\java\jakarta-tomcat-4.0.3
%CATALINA_HOME%\conf\web.xml is stock
%CATALINA_HOME%\conf\server.xml is stock
Environment variables:
CATALINA_HOME=C:\java\jakarta-tomcat-4.0.3
JAVA_HOME=c:\java\jdk131_01
JIKES_HOME=c:\java\jikes114
ANT_HOME=c:\java\ant14
Project organization:
Deploy root: %CATALINA_HOME%\webapps\tomcat40
\WEB-INF\web.xml
\WEB-INF\classes\joshbrain\tomcat40\FirstServlet.class
\WEB-INF\classes\joshbrain\tomcat40\SecondServlet.class
Contents of web.xml:
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
display-nameTomcat 4.0.3 Evaluation Application/display-name
description
This is version 1.0 of a simple evaluation application
written by Josh Rehman ([EMAIL PROTECTED]).
/description
context-param
param-namewebmaster/param-name
param-value[EMAIL PROTECTED]/param-value
description
The EMAIL address of the administrator to whom questions
and comments about this application should be addressed.
/description
/context-param
servlet
servlet-namefirst/servlet-name
servlet-classjoshbrain.tomcat.FirstServlet/servlet-class
/servlet
servlet
servlet-namesecond/servlet-name
servlet-classjoshbrain.tomcat.SecondServlet/servlet-class
/servlet
servlet-mapping
servlet-namefirst/servlet-name
url-pattern/first/url-pattern
/servlet-mapping
servlet-mapping
servlet-namesecond/servlet-name
url-pattern/second/url-pattern
/servlet-mapping
session-config
session-timeout30/session-timeout!-- 30 minutes --
/session-config
/web-app
Contents of FirstServlet.java (SecondServlet similar):
/*
* FirstServlet.java
*
* Created on March 18, 2002, 4:56 PM
*/
package joshbrain.tomcat;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Josh Rehman
* @version
*/
public class FirstServlet extends HttpServlet
{
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, java.io.IOException
{
response.setContentType(text/html);
java.io.PrintWriter out = response.getWriter();
out.println(html);
out.println(head);
out.println(titleServlet/title);
out.println(/head);
out.println(body);
out.println(bThis is the string that will
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
Nope, no JSP. Just a plain old servlet. -Original Message- From: Dahnke, Eric [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 19, 2002 2:31 PM To: 'Tomcat Users List' Subject: RE: Where's my fish? How do I go fishing? (Tomcat 4.0) If there is a JSP page either calling the servlet or the servlet includes or forward to a JSP page, you may want to try to touch *.jsp in the dirs containing the jsps. HTH _ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Where's my fish? How do I go fishing? (Tomcat 4.0)
Yes, I have seen that work directory. I may start fishing in those
waters.
I suspect that my own servlets will change fairly often, so dynamic
reload is very important to me. I would not be satisfied accepting that
this is the one that got away.
-Original Message-
From: Peter Wieland [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, March 19, 2002 2:47 PM
To: [EMAIL PROTECTED]
Subject: Re: Where's my fish? How do I go fishing? (Tomcat 4.0)
Hello,
I just started fishing some weeks ago and I had similar difficulties.
I don't know if there is an elegant way to catch some nice fish, but I
can
explain you the way I got it to work. I think it is a problem of
Tomcats
caches. (Not really a problem, because once an application is
developped,
the servlets won't change very often).
Tomcat has a ${tomcat-home}\work directory, were it keeps many files
of wich
I do not really understand very much. But it happens that after I
deleted
this directory (or a relevant subpath - for tomcat 3.2 this is
something
like work\localhost_8080%2Fmyapplication), my changes to servlets were
visible. Sometimes a simple restart helped, too.
All this fishing experiance was done with Tomcat 3.3 and 3.2 but I
think it
should be similar with Tomcat 4.
Have a fine fish meal.
Peter
Hello,
Tomcat 4.0.3 is apparently not reloading a recompiled servlet.
According
to the docs, this should be the default behavior.
Interestingly, it WILL load a new servlet.
I have 2 questions, of the where's my fish sort and of the how do
I
fish sort.
Where's my fish: why isn't Tomcat reloading my changed servlet? I
have
verified that the class file has changed by checking the timestamp,
so
I'm pretty sure it's not a build problem.
How do I fish: what is a reasonable way to troubleshoot this
problem?
While I would love to have a fish right now, I am perfectly willing
to
learn how to fish and catch my own.
Some fishing I've already done:
1) tried restarting tomcat. Picks up the new class!
2) tried restarting the browser. No go.
3) examined the tomcat logs. Nothing interesting.
4) examined the servlet class file in the webapps dir. Yup, it sure
changed.
5) tried adding a second servlet. Tomcat picks it up!
6) tried changing the second servlet. No go.
I *suspect* that in the murky depths of this problem swims an
enormous
caching flounder. Is its name Tomcat 4.0.3? Is it IE 5? Either way,
I
want to hook it, filet it, and have it for dinner tonight.
Thanks for your help,
Josh Rehman
Here are some more facts for you:
Hardware: Dell Inspiron 7000 Laptop - P2-366 256M/10G
OS: MS Windows 2000 (NT5) Professional SP2 1024x768x64k
Java: Sun J2SE 1.3.1_01 - c:\java\jdk131
Tomcat: 4.0.3 - c:\java\jakarta-tomcat-4.0.3
%CATALINA_HOME%\conf\web.xml is stock
%CATALINA_HOME%\conf\server.xml is stock
Environment variables:
CATALINA_HOME=C:\java\jakarta-tomcat-4.0.3
JAVA_HOME=c:\java\jdk131_01
JIKES_HOME=c:\java\jikes114
ANT_HOME=c:\java\ant14
Project organization:
Deploy root: %CATALINA_HOME%\webapps\tomcat40
\WEB-INF\web.xml
\WEB-INF\classes\joshbrain\tomcat40\FirstServlet.class
\WEB-INF\classes\joshbrain\tomcat40\SecondServlet.class
Contents of web.xml:
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com/dtd/web-app_2_3.dtd;
web-app
display-nameTomcat 4.0.3 Evaluation Application/display-name
description
This is version 1.0 of a simple evaluation application
written by Josh Rehman ([EMAIL PROTECTED]).
/description
context-param
param-namewebmaster/param-name
param-value[EMAIL PROTECTED]/param-value
description
The EMAIL address of the administrator to whom questions
and comments about this application should be addressed.
/description
/context-param
servlet
servlet-namefirst/servlet-name
servlet-classjoshbrain.tomcat.FirstServlet/servlet-class
/servlet
servlet
servlet-namesecond/servlet-name
servlet-classjoshbrain.tomcat.SecondServlet/servlet-class
/servlet
servlet-mapping
servlet-namefirst/servlet-name
url-pattern/first/url-pattern
/servlet-mapping
servlet-mapping
servlet-namesecond/servlet-name
url-pattern/second/url-pattern
/servlet-mapping
session-config
session-timeout30/session-timeout!-- 30 minutes --
/session-config
/web-app
Contents of FirstServlet.java (SecondServlet similar):
/*
* FirstServlet.java
*
* Created on March 18, 2002, 4:56 PM
*/
package joshbrain.tomcat;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author Josh Rehman
* @version
*/
public class FirstServlet extends
Re: Where's my fish? How do I go fishing? (Tomcat 4.0)
JavaJosh wrote (about the cache getting stale): Nope, no JSP. Just a plain old servlet. I think this is a known issue, and I think there is even a tool for forcing the cache to pick up your changes. It's really difficult to trace dependencies through a program without executing it. That is why there seems to be a wall there. Joel Rees Alps Giken Kansai Systems Develoment Suita, Osaka -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
