Session Creation with IE
Using 5.0.28 on WIndows 2K. We have three ways of getting at our webapp from the client side: IE Favourites Email link (usually Outlook express) Desktop shortcuts. All clients are running IE6. If the client goes into the app via the browser favourite all is fine. If the first client window is brought up via the email link or desktop short cut and then an IE favourite is used to access another page, a new session is created at the server end. Anyone seen anything like this. It seems that either tomcat thinks the second access is from a different client or it is indeed from a new client and IE/Win2K is doing something strange. -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.8 - Release Date: 14/02/2005 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Stopping creation of sessions
My application uses FOP to create pdf documents on the fly.
The xsl description for docn creation includes a directive to load an
external object, eg a jpeg file. The spec looks like this
fo:external-graphic [EMAIL PROTECTED] scaling=uniform
vertical-align=middle width={$width} /
So for each image in the doc to be created the FOP code contacts the Tomcat
server to load the image and a new session is created.
My question is: Is there anyway to specify on a URL or a client that will
not create a session or even reuse an existing session? This is really
screwing up my
session management code.
TIA
Mark
-
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Working directory for tomcat service on W2K
Is there any way to change this, when tomcat runs as a service, from c:\winnt\system32? TIA Mark - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
New session created from same client/different host
If my client (IE6) connects to a single tomcat(5.0.28 Windows2k) using different hostnames (e.g. http://localhost:8080/myapp/test.jsp AND http://127.0.0.1:8080/myapp/test.jsp ) a new session is created for each alias. Is there any way to stop these new sessions being created? TIA Mark - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Sessions on restart
Hi, Using 5.0.28 on Windows2000. I have a session listener that implements HttpSessionListener,ServletContextListener,HttpSessionActivationListener,HttpSessionBindingListener and it works fine in that I am notified of the context start, sessions being added destroyed. I am using this to keep a list of the sessions that are currently active. Now when tomcat restarts, the sessions persist OK but I have no way of knowing the list of active sessions. I am sure that in the 4.0.x days, sessionCreated was called on restart for all the persisted sessions. That doesn't seem to be happening with 5.0.28. The question is: How do I maintain a list of sctive sessions across restarts of Tomcat. TIA - Mark (back after a LONG time) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Sessions on restart
Well, as you can see my listener implements this interface but the activation/ passivation methods are never called :-( I have flagged the class as a listener in m web.xml. Is there anything else I have to do? TIA Mark - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Thursday, November 18, 2004 3:14 PM Subject: RE: Sessions on restart Hi, Now when tomcat restarts, the sessions persist OK but I have no way of knowing the list of active sessions. There will be an activation event for each session restored from disk. If your listener implemented HttpSessionActivationListener, you'd get this event. By monitoring session creation, activation, passivation, and destruction, you will be able to maintain the list of active sessions. I am sure that in the 4.0.x days, sessionCreated was called on restart for all the persisted sessions. That doesn't seem to be happening with 5.0.28. This behavior was a bug if it indeed existed. Yoav Shapira http://www.yoavshapira.com This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Sessions on restart
That worked fine. Thanks to you both Mark - Original Message - From: Jon Wingfield [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Thursday, November 18, 2004 3:35 PM Subject: Re: Sessions on restart Yep. Read the docs more carefully ;) The activation/passivation methods are called on objects that implement the listener AND are attributes of the session to be activated/passivated. Tomcat works as Yoav described. HTH, Jon Mark O'Driscoll wrote: Well, as you can see my listener implements this interface but the activation/ passivation methods are never called :-( I have flagged the class as a listener in m web.xml. Is there anything else I have to do? TIA Mark - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Thursday, November 18, 2004 3:14 PM Subject: RE: Sessions on restart Hi, Now when tomcat restarts, the sessions persist OK but I have no way of knowing the list of active sessions. There will be an activation event for each session restored from disk. If your listener implemented HttpSessionActivationListener, you'd get this event. By monitoring session creation, activation, passivation, and destruction, you will be able to maintain the list of active sessions. I am sure that in the 4.0.x days, sessionCreated was called on restart for all the persisted sessions. That doesn't seem to be happening with 5.0.28. This behavior was a bug if it indeed existed. Yoav Shapira http://www.yoavshapira.com This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Starting TOMCAT without opening new DOS promt
Use Linux! (Sorry, couldn't resist that one) You can run it as a service? (net start ...) - Original Message - From: RAJESH KANNAN [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, September 25, 2002 3:31 PM Subject: Starting TOMCAT without opening new DOS promt Hi all, We would like to start the TOMCAT server without opening a new DOS prompt. How should we do this? Thanks in anticipation. With Regards K.RajeshKannan _ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
SIGINT kills tomcat
On Solaris 8, under bourne shell, tomcat 4.0.3. Run tomcat/bin/startup.sh prints out env. variables starts tomcat Script exits and returns to the shell prompt. All is fine. Tomcat now seems to be running as a background process If I type ^C (SIGINT) at the command prompt (or at a subsequent tail -f, say, running at the same terminal window as I started tomcat from), the signal is propagated to the tomcat jvm instance and it exits! This outrageous behaviour only happens with the bourne shell; bash and csh are OK. Any idea on how to stop keyboard generated signals getting propagated to the background tomcat java process? - Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Programmatically remove an application?
Is there a way to programmatically remove or stop the installation of a web application? i.e. call a function that does the same as http:/:8080/manager?remove=/app TIA -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Stopping application installation?
I want to stop the installation of an application under certain conditions. I have a servlet that is loaded on startup and I check some things in its init() method. I want to be able to disable the application at this point. Throwing a ServletException in the init() doesn't seem to work. Question is: How does one stop the installation of an application? Tomcat 4.0.3 standalone with jdk1.4 on Solaris8. TIA - Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Precompilation
Hi,
I currently recompile all my jsp's using jspc and update the entries in
web.xml as created by jspc.
This is fine but not quite what I want. One of the problems is that my
default welcome page is index.jsp which, of course, is
no longer there when the file is precompiled. I have got around this by
having a index.html that redirects after 0 secs to index.jsp.
Any solution to this?
I would like to be precompile so that all jsp go into
localhost/work/applicationfred$jsp.{java,class} as tomcat does. Any easy
way to do this?
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Re: servlet-jdbc-SQL server
MySQL has a last_insert_id() function which you can use on a connection - Original Message - From: Mike Jackson [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, August 19, 2002 4:38 PM Subject: RE: servlet-jdbc-SQL server With oracle there's a way to specify that a insert does a return, it's something like insert into tablea ( a ) values ( 'a' ) returning id. I know this isn't oracle that you're asking about, but you might try using that syntax on ms sql and see what happens. Or it might help to find it in their documentation (there's a guide oracle vs ms sql in the documentation). --mikej -=- mike jackson [EMAIL PROTECTED] -Original Message- From: Matt Brennan [mailto:[EMAIL PROTECTED]] Sent: Monday, August 19, 2002 8:36 AM To: [EMAIL PROTECTED] Subject: servlet-jdbc-SQL server Just taking some stumbling first steps talking to SQL server from a servlet using the Microsoft JDBC driver. Servlet container is tomcat 4.0.4. Quick question if I may: I need to insert a row into an SQL Server table and have the servlet generate a page that includes an automatically generated IDENTITY from the newly created row. How after the insert can I find the generated ID without conducting a subsequent query (which would have no guarantee of returning uniquely the newly inserted record)? // 'con' is a connection to MS-SQLserver with SelectMethod=cursor Statement state = con.createStatement( ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE); // Generate an empty result set ResultSet content = state.executeQuery(sqlQuery); content.moveToInsertRow(); // Column 1 is id int IDENTITY NOT NULL PRIMARY KEY // Column 2 is name VARCHAR(20) content.updateString (2, something); content.insertRow(); // If I then query the inserted row, to find the newly generated // IDENTITY value I get MIN_INT instead of '1' (the default first // identity generated by SQL server if no seed is given) int id = content.getInt (1); Is this some peculiarity of the servlet interface to the driver, to the driver itself or just my bad undestanding of the insert process? Is it possible to configure the Statement so that the Insert row in the Result Set gets updated when the insert takes place and the 'id' gets generated? Please excuse the fact that this query starts to look more like a JDBC query than a tomcat query - not quite sure where the problem lies - tomcat+driver? driver? my understanding (most likely!). I am hoping that other servlet developers have crossed this bridge before. matt -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
re: tomcat stops randomly. why??
I have a similar but different problem. Running 4.0.3 on solaris 8 standalone with jdk 1.4 Occasionally, tomcat dies with no error message in any log file. It is as if someone has kill -9'ed the jvm. Has anyone seen anything like this? People here are getting very wary of tomcat. I need some resolution to this. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: forward to TOP-Frame
Is this a game? You are trying to manipulate client side functionality without using the only client side programming feature (javascript) you have. Trying to develop any system with a browser front end without using javascript is a futile exercise. Tell whoever mandated the ban on javascript that he is a muppet and should seek alternative employment in McDonalds. You can tell him I said so! - Original Message - From: Harry Knörrer [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED] Sent: Wednesday, August 14, 2002 10:49 AM Subject: AW: forward to TOP-Frame And javascript isn't allowed -Ursprüngliche Nachricht- Von: Harry Knörrer [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 14. August 2002 11:45 An: 'Tomcat Users List' Betreff: AW: forward to TOP-Frame This is a problem cause the forward should happen when the session is invalid. I check this in my controller.jsp -Ursprüngliche Nachricht- Von: Barney Hamish [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 14. August 2002 11:29 An: 'Tomcat Users List' Betreff: RE: forward to TOP-Frame You can't solve this with forward. You need to do this client side with either javascript or by changing whatever link the user clicks on to to include a target. Hamish -Original Message- From: Harry Knörrer [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 14, 2002 11:27 AM To: Tomcat-Liste (E-Mail) Subject: jsp:forward to TOP-Frame Hello! I want to forward the request to a page but it should be shown in my top-frame. e.g href=logindialogController.jsp?formcommand=logout target = _top How can i solve this with jsp:forward or any other solution? Thanks Harry Knoerrer -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
How to keep track of sessions
I am trying to keep track of the current sessions that are active in my web application. I have a HttpSessionListener that is correctly called on sessionCreated/sessionDeleted. I keep a reference to each session in the servletContext as a Vector. If tomcat is restarted then the sessions are persisted fine. However my vector of sessions is lost so I have no record of sessions that were created during a previous tomcat run. Any idea how I could find or keep the list of previously created sessions? Is there any way I can find a list of the current sessions without keeping a list (that would be my preference) TIA - Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How to keep track of sessions
I am using the sessions to keep track of who is logged on, for how long and what they have done. Obviously there are other non servlet ways to do this but as tomcat gives the opportunity to track sessions, I thought I'd use it. Session persistence highlights a 'hole' in the sessionListener interface. BTW: I'm surprised you think sessions should not be persisted. I think it's cool! Thanks for the help. - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Wednesday, August 14, 2002 2:17 PM Subject: RE: How to keep track of sessions Howdy, Sessions are not meant to be persisted across server restarts. Obviously other people have other opinions about that. Which is why I still suggested a solution I've used in the past ;) Even though I disagree with the approach of persisting someone else's proprietary internal objects, I assume that whoever asked the question has a reasonable and well-thought out cause, so I try to help. I'm still unclear as to why one would want to save the session object itself, as opposed to only the parts of interest from it. Does it have to do with load-balancing, wanting to somehow augment / superimpose on the built-in mechanism? Yoav Shapira Millennium ChemInformatics This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: filter
filter-classcom.test.FilterTest/filter-name ^^^ // should be /filter-class Failing that, i'd have to see the error but my guess is that you have the order of things in your web.xml wrong. filter tags should appear after context-param and before listener tags. See your dtd for more details. I use http://java.sun.com/web-app_2_3.dtd - Original Message - From: Felipe Schnack [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, August 14, 2002 2:21 PM Subject: filter I'm using Tomcat 4.0.4 I'm trying to declare a filter in web.xml file, but it refuses to work. Here is what I wrote: filter filter-nametestFilter/filter-name filter-classcom.test.FilterTest/filter-name /filter When I start Tomcat it says my XML is invalid. What I'm doing wrong? -- Felipe Schnack Analista de Sistemas [EMAIL PROTECTED] Cel.: (51)91287530 Linux Counter #281893 Faculdade Ritter dos Reis www.ritterdosreis.br [EMAIL PROTECTED] Fone/Fax.: (51)32303328 -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How to keep track of sessions
This is all very interesting but. The sessions are currently persisted or serialized on tomcat exit, fine. I have a collection of session object references. If I save the references they will be invalid when tomcat starts up. If I save (serialize) the objects then I am duplicating what tomcat does. In either case, it's an arse. Am I missing something... - Mark - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Wednesday, August 14, 2002 3:05 PM Subject: RE: How to keep track of sessions Hi, I like this thread as a theoretical discussion, so let's pursue it a bit more ;) Depending on the kind of information you want to display it gets at sime point annoying to to copy everthing from the session to a store and to remove it from the store when the session ends. - More code = more possible error, less perfomance - More memory = less performance More code, yes. But I think the SessionInfo-type objects would be trivial. The manager would be very easy to write as well. As they are simple and completely under your control, you could make the processing and persistence operations very fast. Having tried that approach on long-running servers with many users and delayed session expiration (120min), leading to many SessionInfo objects that had to be persisted on context shutdown and restored on context startup, I can safely say that performance was not a problem for us. Even for thousands of SessionInfo object, the persistence operations were only a few seconds. And that's on a fairly small server box, JDK 1.2.2 without much tuning. (Although it was a custom SAXParser and not Castor, as I suggested before. Would've been nice to compare them ;)). Even if you do it, the problem of the original poster is the same. Now he has a Vector of SessionInfo I agree. You have to worry about persistence either way. However, persisting your own objects is typically a lot easier than persisting third party objects such as tomcat's session implementation. The part that I think makes his use-case very interesting and non-trivial is the requirement to record (and thus persist) the user's click-stream. I'm not sure off the top of my head how that fits into the SessionInfo object, except maybe as a list of URLs the user visited? We did not have this requirement in the aforementioned system, and so I can't speak to it... I'd be interested to hear from the original poster when a solution is implemented and tested... Yoav Shapira Millennium ChemInformatics This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Trouble re-deploying a war file through manager
I do something similar but different: 1: remove existing application 2: remove the war AND the unpacked war 3: install the new war from somewhere other than /webapps 4: All works OK - Original Message - From: Erik Mattsson [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, July 25, 2002 10:03 AM Subject: Trouble re-deploying a war file through manager Besides the other question about Ant and tomcat, Im having problems with the deploying through the manager. First I undeploy the servlet through http://192.168.0.150:8180/manager/remove?path=/iwipwebservice Then I upload the new iwipwebservice.war file to the webapps dir, and delete the unpacked directory webapps/iwipwebservice/. (to provoke it to unpack the new war file) Then I try to deploy the servlet using http://192.168.0.150:8180/manager/install?path=/iwipwebservicewar=jar:file: /usr/local/tomcat/webapps/iwipwebservice.war!/ But I get the following error message: FAIL - Encountered exception java.lang.IllegalStateException: zip file closed Reading the localhost_log.2002-07-26.txt i find out the following java Exception: 2002-07-26 12:12:22 Manager: install: Installing web application at '/iwipwebservice' from 'jar:file:/usr/local/tomcat/webapps/iwipwebservice.war!/' 2002-07-26 12:12:22 StandardHost[localhost]: Installing web application at context path /iwipwebservice from URL jar:file:/usr/local/tomcat/webapps/i wipwebservice.war!/ 2002-07-26 12:12:22 ManagerServlet.install[/iwipwebservice] java.lang.IllegalStateException: zip file closed at java.util.zip.ZipFile.entries(ZipFile.java:284) at java.util.jar.JarFile.entries(JarFile.java:192) at org.apache.catalina.core.StandardHost.expand(StandardHost.java:969) at org.apache.catalina.core.StandardHost.install(StandardHost.java:695) at org.apache.catalina.servlets.ManagerServlet.install(ManagerServlet.java:376) at org.apache.catalina.servlets.ManagerServlet.doGet(ManagerServlet.java:277) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:190) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase .java:531) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve. java:170) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :174) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java: 1027) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125 ) at java.lang.Thread.run(Thread.java:484) 2002-07-26 12:13:29 Manager: install: Installing web application at '/iwipwebservice' from
Re: Is there any way to stop exceptions getting logged to log file?
You're right. It is too late! I don't want to get involved in a programming practice debate BUT.. Too late ... :-) The performance hit from exceptions occur because exceptions are thrown, not in how they are handled. You cannot programatically avoid exceptions with xhaustive checking that would itself hinder performance. Specifically potential SQL errors are punexceptionally/pun difficult to cater for. (dropped connections, network problems, constraint violations) .Exceptions are only thrown when something goes wrong. The point I was trying to make was that exceptions are not only a sign of system failure, but one of usage failure too. Because SQLException is a checked exception, you can't throw it directly from a servlet anyway, so your database accesses are already encapsulated in try/catch blocks. You've already paid all the cost of checking already -- you actually have to deliberately rethrow it (wrapped in a ServletException) to allow your filter to see it. Why go to all that extra work? Anyway, what I was trying to do was to implement a transaction logging filter that determined if a particular database write operation had worked. The code is simple and checks if a servlet/jsp has thrown an exception to check for success/failure. If the servlet/jsp completes without throwing an exception, I commit the transaction, otherwise I roll it back. This is not the way you should program database applications! It is very very dangerous to depend on external logic to commit or roll back transactions for you. If an exception happens, it should be logged and dealt with when it happens. Disagree. That is just micro managing exceptions. Transactions are the example of where a wrapper try/catch block around a series of SQL statements is a much better way to do it than try/catching each one. Also subsequent non database actions can cause a rollback. Database access logic should always catch its own exceptions, and commit or roll back the transaction appropriately. In a web app, it is considered irresponsible programming for a servlet to leave an open database transaction after it returns from the service() method, for whatever reason that might happen. To say nothing of returning the connection to the connection pool you got it from. That is exactly what the filter will do for you. The transaction wrapup in the filter will ALWAYS be called = less scope for errors. Is there some recognised way to pass servet/jsp error conditions to filters? This would prevent me relying on exceptions (altho' exceptions would have to be catered for too). I suppose I could use the request.getAttribte()? Are exceptions that are trapped in a filter 'seen' and handled by Tomcat? Your problem is that Tomcat sees the exception thrown by the servlet before it is passed back to the filter. That's where the logging is happening. And that's not going to change (in the standard Tomcat release -- you're perfectly free to modify your own copy), because handling exceptions is not what filters are for. Oh no it doesn't. Otherwise filters could not work. If you put doChain() in a try catch block, you catch the exception that the jsp/servlet threw. TIA - Mark Craig I'll second what Craig has said and add that if your program normally throws lots of exceptions, then you should look at some of your design decisions. Exceptions are wonderful when used for Exceptional behavior, but not for normal runs. They are also REALLY slow. Exceptions can kill your performance, and if you are getting them regularly, you should catch the ones you can safely ignore as early as possible and toss them away as appropriate, or even better, not throw them at all. Regards, Will Hartung ([EMAIL PROTECTED]) -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Is there any way to stop exceptions getting logged to log file?
I am using a filter to trap exceptions thrown by jsps/servlets. In normal program operation, lots of these exceptions get thrown. In order to stop 'localhost_log.-MM-DD.txt' getting clogged, I'd like to stop exceptions that are handled by the servlet engine from being logged. Or at least ust havethe exception mentioned rather than the full stack trace. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
How do I determine the error code
Using the error-pageerror-code directive in my web.xml, I am redirecting errors exceptions to one error page. I know I can query the exception but how do I query the error that may have caused the page to be invoked. e.g. if I call response.sendError(234), how do I tell in CheckError.jsp that the error that cased the page to be invoked was 234 (and any other information). I don't want to have to put in a separate directive for each possible error. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How do I determine the error code
Great. Just what I wanted! Now is there anyway to specify a single error-pageerror-code set that works for all error codes. I can't just say error-pagelocation/error.jsp/location/error-page and hope that error.jsp gets caled for all error-code exception errors - Original Message - From: Tim Funk [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Wednesday, July 17, 2002 3:17 PM Subject: Re: How do I determine the error code Section 9.8 of Java Servlet Specification Version 2.3: A web application may specify that when errors occur, other resources in the application are used. These resources are specified in the deployment descriptor. If the location of the error handler is a servlet or a JSP, the following request attributes can be set: - javax.servlet.error.status_code - javax.servlet.error.exception_type - javax.servlet.error.message - javax.servlet.error.exception - javax.servlet.error.request_uri -Tim Mark O'Driscoll wrote: Using the error-pageerror-code directive in my web.xml, I am redirecting errors exceptions to one error page. I know I can query the exception but how do I query the error that may have caused the page to be invoked. e.g. if I call response.sendError(234), how do I tell in CheckError.jsp that the error that cased the page to be invoked was 234 (and any other information). I don't want to have to put in a separate directive for each possible error. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Default Servlet Parameters
I have a supplementary question to this. Is there any accepted way to pass parameters to servlets/jsps that may be edited? I can see that init-param context-param do what I want but I need to allow a user to change values of some parameters, save them and the new values would be used subsequently. I don't want to have my code re-writing web.xml or server.xml. I guess I could have a context parameter pointing to an OS file that would contain parameter sets in XML or java property sets. Any other approaches? Oh, that's another question. Any common software out there that can easily parse an XML property file or can I use some of the tomcat libraries? - Original Message - From: Shapira, Yoav [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Monday, July 08, 2002 2:33 PM Subject: RE: Default Servlet Parameters Howdy, You shouldn't be giving other parameters to tomcat's own DefaultServlet. Your own servlets have no limitations on the number of name of variables: you can have as many init-param tags in your servlet tags as you want. If you want some params common to all the servlets in your web-app, use context-param instead, outside your servlet tags. Yoav Shapira Millennium ChemInformatics -Original Message- From: Manchan [mailto:[EMAIL PROTECTED]] Sent: Tuesday, July 02, 2002 4:44 PM To: [EMAIL PROTECTED] Subject: Default Servlet Parameters *** THE QUESTION *** I'd like to load global init parameters for my servlets on Tomcat, in the manner which Jserv accomplishes with its |zone.properties| file using the line |servlets.default.initArgs=myParameter=myValue|. *** MY GUESS TO QUESTION *** I presume the Tomcat analogue to the above is adding init-param tags to $TOMCAT/conf/web.xml, e.g. servlet servlet-namedefault/ servlet-classorg.path.to.DefaultServlet/ init-param param-namemyParameter/ param-valuemyValue/ /init-param /servlet *** UNFORTUNATELY *** In DefaultServlet.java, it statically loads only five init-parameters, namely debug, input, listings, output, readonly. I would need to alter Tomcat code to accept |myParameter|. There must be a better way. __ Do You Yahoo!? Sign up for SBC Yahoo! Dial - First Month Free http://sbc.yahoo.com -- To unsubscribe, e-mail: mailto:tomcat-user- [EMAIL PROTECTED] For additional commands, e-mail: mailto:tomcat-user- [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: LoadOnStartup woes
99 means that it is the last of the loadonstartups to run, you hope. Get your servlet to create its own thread rather than sleeping the current one and all should be OK - Original Message - From: Cato, Christopher [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, July 08, 2002 3:14 PM Subject: LoadOnStartup woes I have a servlet that checks and distributes email. I need it to run on startup. So I configure tomcat to run it on startup. The servlet starts a thread, does it's thing and then sleeps again. Now, I marked the servlet to run as number 99 (effectively last i hope) in the LoadOnStartup entry. Problem is, tomcat never gets to start the http listener as the thread in my servlet obviously puts it all to sleep before tomcat reaches that part. How can I avoid this and still have the servlet do its thing? /Christopher -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Property Editor
Sorry, I didn't make myself clear. I have read the bean stuff and can see how to set property descriptors. My question is how do I register all this stuff with Tomcat? .or maybe I haven't understood it at all! - Original Message - From: Craig R. McClanahan [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Sent: Thursday, July 04, 2002 6:59 PM Subject: Re: Property Editor On Thu, 4 Jul 2002, Mark O'Driscoll wrote: Date: Thu, 4 Jul 2002 18:07:35 +0100 From: Mark O'Driscoll [EMAIL PROTECTED] Reply-To: Tomcat Users List [EMAIL PROTECTED] To: Tomcat Users List [EMAIL PROTECTED] Subject: Property Editor I need to use jsp:setProperty with a value of a non supported type? I need to register a Property Editor to do this. How about the JavaDocs for java.beans.PropertyEditorManager? I would also suggest reading the JavaBeans specification for more background: http://java.sun.com/products/javabeans/ Any ideas where I might find some info. on configuring specific data types to work with the bean mechanisms for tomcat? TIA - Mark Craig -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Installation successfull but still problems!
Jasper can't find the entry point for the java compiler. In java1.4 it's in $JAVA_HOME/lib/tools.jar. Have you JAVA_HOME set up? (needed by catalina.sh/bat) - Original Message - From: Gunter D'Hondt [EMAIL PROTECTED] To: 'Tomcat Users List' [EMAIL PROTECTED] Sent: Thursday, July 04, 2002 11:01 AM Subject: Installation successfull but still problems! I've installed Tomcat 4.0 as described in the running.txt file and http://localhost:8080/ gives me the welcome page back. And if I try the Servlet Examples it works good but the JSP Examples (for example: http://localhost:8080/examples/jsp/num/numguess.jsp) always gives me the error below. What can I do to fix this? The error I get in my browser: type Exception report message Internal Server Error description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request. exception javax.servlet.ServletException: sun/tools/javac/Main at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:481) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja va:190) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase .java:475) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2 46) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve. java:170) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170 ) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 64) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java :174) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943) at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java: 1027) at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125 ) at java.lang.Thread.run(Unknown Source) root cause java.lang.NoClassDefFoundError: sun/tools/javac/Main at org.apache.jasper.compiler.SunJavaCompiler.compile(SunJavaCompiler.java:136) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:272) at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:548) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspSe rvlet.java:176) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja va:188) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application FilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh ain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja va:243) at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5 66) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472) at
Property Editor
I need to use jsp:setProperty with a value of a non supported type? I need to register a Property Editor to do this. Any ideas where I might find some info. on configuring specific data types to work with the bean mechanisms for tomcat? TIA - Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Redirecting one jsp to another
Can I easily redirect a single JSP to another? Like: servlet-mapping servlet-name/one.jsp/servlet-name url-pattern/two.jsp/url-pattern /servlet-mapping I know this doesn't work ... but what, if any, is the alternative. I really want to call lots of jsps the same name. e.g. Warning.jsp, Info.jsp, Error.jsp all end up at Message.jsp where I can determine the name and take appropriate action. TIA Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
