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Posted to users@tomcat.apache.org by Subodh Joshi <su...@gmail.com> on 2024/03/21 11:32:09 UTC
Tomcat Internal Architect for JSP compilation?
Expert,
Recently i came across a issue and i was getting no clue what was going on
wrong with the Application.
So here is the issue , we were getting following issue in our web
application(Springboot+Embedded Tomcat) which is deployed into Linux machine
java.lang.ClassNotFoundException:
> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
> at
> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
> at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
> at
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
> at
> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
> at
> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
> at
> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
> at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> at
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> at
> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
> at
> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
> at
> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
> at
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> at
> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>
but how to reproduce this issue we were not able to get any clue.
But Recently i got to know how to reproduce this issue
1- Start the web-application.
2- Tomcat will create a directory under /tmp/tomcat.*/.././......
3- Now access web-application through browser.
4- But dont access all JSP pages.
5- Suppose application have A,B,C,D.jsp pages .
6- User accesses A,B.jsp only
7- Now user or any cron job deleted /tmp/tomcat directory
8- Now user click on C.jsp it is throwing above given exception.
9- Now click on D.jsp it will work fine as tomcat will create /tmp/tomcat
..... directory again.
10. But C.jsp which was failed with 500 error will never come upto the time
tomcat will not start.
Can someone please explain how tomcat works here and why it throws an
exception and wont allow that jsp page to come up without restart?
--
Subodh Chandra Joshi
<su...@yahoo.co.in>
Re: Tomcat Internal Architect for JSP compilation?
Posted by Tim Funk <fu...@apache.org>.
One possible workaround is to precompile the JSP's at build time.
https://tomcat.apache.org/tomcat-9.0-doc/jasper-howto.html#Web_Application_Compilation
-Tim
On Fri, Mar 22, 2024 at 1:37 AM Subodh Joshi <su...@gmail.com>
wrote:
>
> Why i am doing this exercise?
> In our some of the deployed linux environment many clients are complaining
> about this issue , We tried to monitor who actually deleting these
> /tmp/tomcat folder but still we are not able to figure it out and we are
> not able to reproduce it . So i have to do reproduce it manually deleting
> the /tmp/tomcat directory.
>
>
RE: Tomcat Internal Architect for JSP compilation?
Posted by Harri Pesonen <ha...@sinch.com>.
Linux has "auditd" tool to log file system changes:
https://www.redhat.com/sysadmin/configure-linux-auditing-auditd
-Harri
-----Original Message-----
From: Subodh Joshi <su...@gmail.com>
Sent: perjantai 22. maaliskuuta 2024 7.36
To: Tomcat Users List <us...@tomcat.apache.org>
Subject: Re: Tomcat Internal Architect for JSP compilation?
[Et saa yleensä sähköpostia subodhcjoshi82@gmail.com. Lisätietoja siitä, miksi tämä on tärkeää, on osoitteessa https://aka.ms/LearnAboutSenderIdentification ]
Hi Chris
Thanks for your response.
So i added below properties in application.properties file
> spring.mvc.cache-control.cache-allowed=false
>
> and then Deleted the /tmp/tomcat directory . So now when i restart the
server A.jsp only fail with 500 error (ClassNotFoundException) as this is first page which i was trying to load, rest JSP pages working fine without any issue .
Why i am doing this exercise?
In our some of the deployed linux environment many clients are complaining about this issue , We tried to monitor who actually deleting these /tmp/tomcat folder but still we are not able to figure it out and we are not able to reproduce it . So i have to do reproduce it manually deleting the /tmp/tomcat directory.
thanks & regards
On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz < chris@christopherschultz.net> wrote:
> Subudh,
>
> On 3/21/24 07:32, Subodh Joshi wrote:
> > Expert,
> >
> > Recently i came across a issue and i was getting no clue what was
> > going
> on
> > wrong with the Application.
> >
> > So here is the issue , we were getting following issue in our web
> > application(Springboot+Embedded Tomcat) which is deployed into Linux
> machine
> >
> > java.lang.ClassNotFoundException:
> >> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
> >> at
> >> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
> >> at
> >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
> >> at
> >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
> >> at
> >>
> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultIns
> tanceManager.java:151)
> >> at
> >>
> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapp
> er.java:189)
> >> at
> >>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.
> java:410)
> >> at
> >> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
> >> at
> >> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
> >> at
> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli
> cationFilterChain.java:205)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi
> lterChain.java:149)
> >> at
> >> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli
> cationFilterChain.java:174)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi
> lterChain.java:149)
> >> at
> >>
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRe
> questFilter.java:110)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli
> cationFilterChain.java:174)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi
> lterChain.java:149)
> >> at
> >>
> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFi
> lter(CompositeFilter.java:108)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy.lambda$doFilterInter
> nal$3(FilterChainProxy.java:231)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:365)
> >> at
> >>
> org.springframework.security.web.access.intercept.AuthorizationFilter.
> doFilter(AuthorizationFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doF
> ilter(ExceptionTranslationFilter.java:126)
> >> at
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doF
> ilter(ExceptionTranslationFilter.java:120)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.authentication.AnonymousAuthenticatio
> nFilter.doFilter(AnonymousAuthenticationFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.servletapi.SecurityContextHolderAware
> RequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:17
> 9)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.
> doFilter(RequestCacheAwareFilter.java:63)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(
> OperationClientRestFilter.java:86)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >> at
> >>
> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(Jwt
> SecurityChainFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d
> oFilter(FilterChainProxy.java:374)
> >>
> >
> > but how to reproduce this issue we were not able to get any clue.
> >
> > But Recently i got to know how to reproduce this issue
> > 1- Start the web-application.
> > 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
> > 3- Now access web-application through browser.
> > 4- But dont access all JSP pages.
> > 5- Suppose application have A,B,C,D.jsp pages .
> > 6- User accesses A,B.jsp only
> > 7- Now user or any cron job deleted /tmp/tomcat directory
>
> Don't do that.
>
> > 8- Now user click on C.jsp it is throwing above given exception.
> > 9- Now click on D.jsp it will work fine as tomcat will create
> > /tmp/tomcat ..... directory again.
> > 10. But C.jsp which was failed with 500 error will never come upto
> > the
> time
> > tomcat will not start.
> >
> > Can someone please explain how tomcat works here and why it throws
> > an exception and wont allow that jsp page to come up without restart?
>
> Tomcat is caching resources and does not expect another process to
> come around and delete its files. I'm not sure exactly why the
> C.jsp/C.class file ends up getting "stuck" while D.jsp/D.class does not.
>
> You vould try setting cachingAllowed="false" in your <Resources>
> element in META-INF/context.xml (or embedded equivalent) to disable caching.
> Performance will likely suffer, but perhaps it will reolve this issue.
>
> Why not just _stop deleting Tomcat's work directory_?
>
> -chris
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
Subodh Chandra Joshi
subodh1_joshi82@yahoo.co.in
http://www.trendsinnews.com/
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Re: Tomcat Internal Architect for JSP compilation?
Posted by Subodh Joshi <su...@gmail.com>.
As Suggested by @Tim i used precompiled jsp feature and now i am not
getting 500 error even i deleted the */tmp/tomcat** directory
@Bean
>
> public ServletContextInitializer preCompileJspsAtStartup() {
>
> return servletContext -> {
>
> Set<String> jspPaths = servletContext.getResourcePaths("/WEB-INF/jsp/");
>
> if (jspPaths != null) {
>
> for (String jspPath : jspPaths) {
>
> if (jspPath.endsWith(".jsp")) {
>
> //logger.info("Registering JSP: " + jspPath);
>
> ServletRegistration.Dynamic reg = servletContext.addServlet("jspServlet_"
> + jspPath, "org.apache.jasper.servlet.JspServlet");
>
> reg.setInitParameter("jspFile", jspPath);
>
> reg.setLoadOnStartup(99);
>
> reg.addMapping(jspPath);
>
> }
>
> }
>
> } else {
>
> logger.error("No JSP files found in /WEB-INF/jsp/ directory");
>
> }
>
> };
>
> }
>
>
> private static String getResourcePath(ServletContext servletContext,
> String path) throws MalformedURLException {
>
> URL resourceUrl = servletContext.getResource(path);
>
> return resourceUrl != null ? resourceUrl.getPath() : null;
>
> }
>
But still I am not able to find the root cause why tomcat is throwing the
error *500(ClassNotFoundException)* when deleting the /tmp/tomcat*
directory .
Observations
1- Application UI open A.jsp
2- Now Delete /tmp/tomcat*/ Directory
3- Access* A.jsp* it will work
4- Access *B.jsp* it will throw 500(ClassNotFoundException)
5- Access C.jsp it will work and regenerate the */tmp/tomcat** directory
6- B.jsp will not work upto the time i won't restart the tomcat.
On Tue, Mar 26, 2024 at 8:39 PM Christopher Schultz <
chris@christopherschultz.net> wrote:
> Subodh,
>
> On 3/26/24 06:59, Subodh Joshi wrote:
> > I am planning to do same now and may be we will use the property
> >
> > *server.tomcat.basedir*
> >
> > But this may create another issue ,it will grow the size of the folder.
>
> What makes you say that?
>
> > Is this possible in the coming release tomcat/embedded tomcat give a
> > feature to delete the basedir at the tomcat restart/start and
> > recreate it?
>
> This sounds more like a deployment detail and not a Tomcat-launch
> detail. Since you are using Spring Boot, why not just delete the
> directory from your own code before Tomcat launches?
>
> > One more thing is unanswered after deleting the tomcat folder why first
> > page clicked is throwing 500 error with ClassNotFoundException if its not
> > accessed before deleting the tomcat folder?
>
> I'm sorry, I can't answer that without spending a lot of time looking at
> your environmemnt.
>
> If you stop deleting the directory while Tomcat is running and it stops
> returning 500 responses, then I think you have solved your problem
> without discovering the absolute root-cause of the problem. But you are
> pulling the rug out from underneath a running application and expecting
> it to work without failing. I think that's not a realistic expectation.
> Tomcat relies on its local environment being stable. Dont' destabilize it.
>
> If you absolutely need Tomcat to not-fail under thes conditions, we'd be
> happy to have you research it and provide a patch or pull-request.
>
> -chris
>
> > On Fri, Mar 22, 2024 at 7:01 PM Christopher Schultz <
> > chris@christopherschultz.net> wrote:
> >
> >> Subodh,
> >>
> >> On 3/22/24 01:36, Subodh Joshi wrote:
> >>> Hi Chris
> >>>
> >>> Thanks for your response.
> >>>
> >>> So i added below properties in application.properties file
> >>>
> >>>> spring.mvc.cache-control.cache-allowed=false
> >>>>
> >>>> and then Deleted the /tmp/tomcat directory . So now when i restart the
> >>> server A.jsp only fail with 500 error (ClassNotFoundException) as this
> is
> >>> first page which i was trying to load, rest JSP pages working fine
> >> without
> >>> any issue .
> >>>
> >>> Why i am doing this exercise?
> >>> In our some of the deployed linux environment many clients are
> >> complaining
> >>> about this issue , We tried to monitor who actually deleting these
> >>> /tmp/tomcat folder but still we are not able to figure it out and we
> are
> >>> not able to reproduce it . So i have to do reproduce it manually
> deleting
> >>> the /tmp/tomcat directory.
> >>
> >> What if you don't use /tmp as your work directory location? /tmp is
> >> supposed to be for actually temporary files. These files could live for
> >> decades if you never changed your source .jsp files or re-deployed your
> >> application.
> >>
> >> -chris
> >>
> >>> On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz <
> >>> chris@christopherschultz.net> wrote:
> >>>
> >>>> Subudh,
> >>>>
> >>>> On 3/21/24 07:32, Subodh Joshi wrote:
> >>>>> Expert,
> >>>>>
> >>>>> Recently i came across a issue and i was getting no clue what was
> going
> >>>> on
> >>>>> wrong with the Application.
> >>>>>
> >>>>> So here is the issue , we were getting following issue in our web
> >>>>> application(Springboot+Embedded Tomcat) which is deployed into Linux
> >>>> machine
> >>>>>
> >>>>> java.lang.ClassNotFoundException:
> >>>>>> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
> >>>>>> at
> >>>>>> java.base/java.net
> .URLClassLoader.findClass(URLClassLoader.java:445)
> >>>>>> at
> >>>>>>
> >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
> >>>>>> at
> >>>>>>
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
> >>>>>> at
> >>>>>>
> >> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
> >>>>>> at
> >>>>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
> >>>>>> at
> >>>> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>>>> at
> >>>>>>
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
> >>>>>> at
> >>>>>>
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>>>
> >>>>>
> >>>>> but how to reproduce this issue we were not able to get any clue.
> >>>>>
> >>>>> But Recently i got to know how to reproduce this issue
> >>>>> 1- Start the web-application.
> >>>>> 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
> >>>>> 3- Now access web-application through browser.
> >>>>> 4- But dont access all JSP pages.
> >>>>> 5- Suppose application have A,B,C,D.jsp pages .
> >>>>> 6- User accesses A,B.jsp only
> >>>>> 7- Now user or any cron job deleted /tmp/tomcat directory
> >>>>
> >>>> Don't do that.
> >>>>
> >>>>> 8- Now user click on C.jsp it is throwing above given exception.
> >>>>> 9- Now click on D.jsp it will work fine as tomcat will create
> >> /tmp/tomcat
> >>>>> ..... directory again.
> >>>>> 10. But C.jsp which was failed with 500 error will never come upto
> the
> >>>> time
> >>>>> tomcat will not start.
> >>>>>
> >>>>> Can someone please explain how tomcat works here and why it throws an
> >>>>> exception and wont allow that jsp page to come up without restart?
> >>>>
> >>>> Tomcat is caching resources and does not expect another process to
> come
> >>>> around and delete its files. I'm not sure exactly why the
> C.jsp/C.class
> >>>> file ends up getting "stuck" while D.jsp/D.class does not.
> >>>>
> >>>> You vould try setting cachingAllowed="false" in your <Resources>
> element
> >>>> in META-INF/context.xml (or embedded equivalent) to disable caching.
> >>>> Performance will likely suffer, but perhaps it will reolve this issue.
> >>>>
> >>>> Why not just _stop deleting Tomcat's work directory_?
> >>>>
> >>>> -chris
> >>>>
> >>>> ---------------------------------------------------------------------
> >>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >>>> For additional commands, e-mail: users-help@tomcat.apache.org
> >>>>
> >>>>
> >>>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >> For additional commands, e-mail: users-help@tomcat.apache.org
> >>
> >>
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
Subodh Chandra Joshi
subodh1_joshi82@yahoo.co.in
http://www.trendsinnews.com
Re: Tomcat Internal Architect for JSP compilation?
Posted by Christopher Schultz <ch...@christopherschultz.net>.
Subodh,
On 3/26/24 06:59, Subodh Joshi wrote:
> I am planning to do same now and may be we will use the property
>
> *server.tomcat.basedir*
>
> But this may create another issue ,it will grow the size of the folder.
What makes you say that?
> Is this possible in the coming release tomcat/embedded tomcat give a
> feature to delete the basedir at the tomcat restart/start and
> recreate it?
This sounds more like a deployment detail and not a Tomcat-launch
detail. Since you are using Spring Boot, why not just delete the
directory from your own code before Tomcat launches?
> One more thing is unanswered after deleting the tomcat folder why first
> page clicked is throwing 500 error with ClassNotFoundException if its not
> accessed before deleting the tomcat folder?
I'm sorry, I can't answer that without spending a lot of time looking at
your environmemnt.
If you stop deleting the directory while Tomcat is running and it stops
returning 500 responses, then I think you have solved your problem
without discovering the absolute root-cause of the problem. But you are
pulling the rug out from underneath a running application and expecting
it to work without failing. I think that's not a realistic expectation.
Tomcat relies on its local environment being stable. Dont' destabilize it.
If you absolutely need Tomcat to not-fail under thes conditions, we'd be
happy to have you research it and provide a patch or pull-request.
-chris
> On Fri, Mar 22, 2024 at 7:01 PM Christopher Schultz <
> chris@christopherschultz.net> wrote:
>
>> Subodh,
>>
>> On 3/22/24 01:36, Subodh Joshi wrote:
>>> Hi Chris
>>>
>>> Thanks for your response.
>>>
>>> So i added below properties in application.properties file
>>>
>>>> spring.mvc.cache-control.cache-allowed=false
>>>>
>>>> and then Deleted the /tmp/tomcat directory . So now when i restart the
>>> server A.jsp only fail with 500 error (ClassNotFoundException) as this is
>>> first page which i was trying to load, rest JSP pages working fine
>> without
>>> any issue .
>>>
>>> Why i am doing this exercise?
>>> In our some of the deployed linux environment many clients are
>> complaining
>>> about this issue , We tried to monitor who actually deleting these
>>> /tmp/tomcat folder but still we are not able to figure it out and we are
>>> not able to reproduce it . So i have to do reproduce it manually deleting
>>> the /tmp/tomcat directory.
>>
>> What if you don't use /tmp as your work directory location? /tmp is
>> supposed to be for actually temporary files. These files could live for
>> decades if you never changed your source .jsp files or re-deployed your
>> application.
>>
>> -chris
>>
>>> On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz <
>>> chris@christopherschultz.net> wrote:
>>>
>>>> Subudh,
>>>>
>>>> On 3/21/24 07:32, Subodh Joshi wrote:
>>>>> Expert,
>>>>>
>>>>> Recently i came across a issue and i was getting no clue what was going
>>>> on
>>>>> wrong with the Application.
>>>>>
>>>>> So here is the issue , we were getting following issue in our web
>>>>> application(Springboot+Embedded Tomcat) which is deployed into Linux
>>>> machine
>>>>>
>>>>> java.lang.ClassNotFoundException:
>>>>>> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
>>>>>> at
>>>>>> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
>>>>>> at
>>>>>>
>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
>>>>>> at
>>>>>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
>>>>>> at
>>>>>>
>>>>
>> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
>>>>>> at
>>>>>>
>>>>
>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
>>>>>> at
>>>>>>
>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
>>>>>> at
>>>>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
>>>>>> at
>>>> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>>>> at
>>>>>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>>>>>> at
>>>>>>
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>> at
>>>>>>
>>>>
>> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
>>>>>> at
>>>>>>
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>>>
>>>>>
>>>>> but how to reproduce this issue we were not able to get any clue.
>>>>>
>>>>> But Recently i got to know how to reproduce this issue
>>>>> 1- Start the web-application.
>>>>> 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
>>>>> 3- Now access web-application through browser.
>>>>> 4- But dont access all JSP pages.
>>>>> 5- Suppose application have A,B,C,D.jsp pages .
>>>>> 6- User accesses A,B.jsp only
>>>>> 7- Now user or any cron job deleted /tmp/tomcat directory
>>>>
>>>> Don't do that.
>>>>
>>>>> 8- Now user click on C.jsp it is throwing above given exception.
>>>>> 9- Now click on D.jsp it will work fine as tomcat will create
>> /tmp/tomcat
>>>>> ..... directory again.
>>>>> 10. But C.jsp which was failed with 500 error will never come upto the
>>>> time
>>>>> tomcat will not start.
>>>>>
>>>>> Can someone please explain how tomcat works here and why it throws an
>>>>> exception and wont allow that jsp page to come up without restart?
>>>>
>>>> Tomcat is caching resources and does not expect another process to come
>>>> around and delete its files. I'm not sure exactly why the C.jsp/C.class
>>>> file ends up getting "stuck" while D.jsp/D.class does not.
>>>>
>>>> You vould try setting cachingAllowed="false" in your <Resources> element
>>>> in META-INF/context.xml (or embedded equivalent) to disable caching.
>>>> Performance will likely suffer, but perhaps it will reolve this issue.
>>>>
>>>> Why not just _stop deleting Tomcat's work directory_?
>>>>
>>>> -chris
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>>> For additional commands, e-mail: users-help@tomcat.apache.org
>>>>
>>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: Tomcat Internal Architect for JSP compilation?
Posted by Subodh Joshi <su...@gmail.com>.
Thanks Chris & others for your input,
I am planning to do same now and may be we will use the property
*server.tomcat.basedir*
But this may create another issue ,it will grow the size of the folder . Is
this possible in the coming release tomcat/embedded tomcat give a feature
to delete the basedir at the tomcat restart/start and recreate it?
One more thing is unanswered after deleting the tomcat folder why first
page clicked is throwing 500 error with ClassNotFoundException if its not
accessed before deleting the tomcat folder?
On Fri, Mar 22, 2024 at 7:01 PM Christopher Schultz <
chris@christopherschultz.net> wrote:
> Subodh,
>
> On 3/22/24 01:36, Subodh Joshi wrote:
> > Hi Chris
> >
> > Thanks for your response.
> >
> > So i added below properties in application.properties file
> >
> >> spring.mvc.cache-control.cache-allowed=false
> >>
> >> and then Deleted the /tmp/tomcat directory . So now when i restart the
> > server A.jsp only fail with 500 error (ClassNotFoundException) as this is
> > first page which i was trying to load, rest JSP pages working fine
> without
> > any issue .
> >
> > Why i am doing this exercise?
> > In our some of the deployed linux environment many clients are
> complaining
> > about this issue , We tried to monitor who actually deleting these
> > /tmp/tomcat folder but still we are not able to figure it out and we are
> > not able to reproduce it . So i have to do reproduce it manually deleting
> > the /tmp/tomcat directory.
>
> What if you don't use /tmp as your work directory location? /tmp is
> supposed to be for actually temporary files. These files could live for
> decades if you never changed your source .jsp files or re-deployed your
> application.
>
> -chris
>
> > On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz <
> > chris@christopherschultz.net> wrote:
> >
> >> Subudh,
> >>
> >> On 3/21/24 07:32, Subodh Joshi wrote:
> >>> Expert,
> >>>
> >>> Recently i came across a issue and i was getting no clue what was going
> >> on
> >>> wrong with the Application.
> >>>
> >>> So here is the issue , we were getting following issue in our web
> >>> application(Springboot+Embedded Tomcat) which is deployed into Linux
> >> machine
> >>>
> >>> java.lang.ClassNotFoundException:
> >>>> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
> >>>> at
> >>>> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
> >>>> at
> >>>>
> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
> >>>> at
> >>>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
> >>>> at
> >>>>
> >>
> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
> >>>> at
> >>>>
> >>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
> >>>> at
> >>>>
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
> >>>> at
> >>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
> >>>> at
> >> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>> at
> >>>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>> at
> >>>>
> >>
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >>>> at
> >>>>
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >>>> at
> >>>>
> >>
> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>> at
> >>>>
> >>
> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
> >>>> at
> >>>>
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>>>
> >>>
> >>> but how to reproduce this issue we were not able to get any clue.
> >>>
> >>> But Recently i got to know how to reproduce this issue
> >>> 1- Start the web-application.
> >>> 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
> >>> 3- Now access web-application through browser.
> >>> 4- But dont access all JSP pages.
> >>> 5- Suppose application have A,B,C,D.jsp pages .
> >>> 6- User accesses A,B.jsp only
> >>> 7- Now user or any cron job deleted /tmp/tomcat directory
> >>
> >> Don't do that.
> >>
> >>> 8- Now user click on C.jsp it is throwing above given exception.
> >>> 9- Now click on D.jsp it will work fine as tomcat will create
> /tmp/tomcat
> >>> ..... directory again.
> >>> 10. But C.jsp which was failed with 500 error will never come upto the
> >> time
> >>> tomcat will not start.
> >>>
> >>> Can someone please explain how tomcat works here and why it throws an
> >>> exception and wont allow that jsp page to come up without restart?
> >>
> >> Tomcat is caching resources and does not expect another process to come
> >> around and delete its files. I'm not sure exactly why the C.jsp/C.class
> >> file ends up getting "stuck" while D.jsp/D.class does not.
> >>
> >> You vould try setting cachingAllowed="false" in your <Resources> element
> >> in META-INF/context.xml (or embedded equivalent) to disable caching.
> >> Performance will likely suffer, but perhaps it will reolve this issue.
> >>
> >> Why not just _stop deleting Tomcat's work directory_?
> >>
> >> -chris
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >> For additional commands, e-mail: users-help@tomcat.apache.org
> >>
> >>
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
Subodh Chandra Joshi
subodh1_joshi82@yahoo.co.in
http://www.trendsinnews.com
Re: Tomcat Internal Architect for JSP compilation?
Posted by Christopher Schultz <ch...@christopherschultz.net>.
Subodh,
On 3/22/24 01:36, Subodh Joshi wrote:
> Hi Chris
>
> Thanks for your response.
>
> So i added below properties in application.properties file
>
>> spring.mvc.cache-control.cache-allowed=false
>>
>> and then Deleted the /tmp/tomcat directory . So now when i restart the
> server A.jsp only fail with 500 error (ClassNotFoundException) as this is
> first page which i was trying to load, rest JSP pages working fine without
> any issue .
>
> Why i am doing this exercise?
> In our some of the deployed linux environment many clients are complaining
> about this issue , We tried to monitor who actually deleting these
> /tmp/tomcat folder but still we are not able to figure it out and we are
> not able to reproduce it . So i have to do reproduce it manually deleting
> the /tmp/tomcat directory.
What if you don't use /tmp as your work directory location? /tmp is
supposed to be for actually temporary files. These files could live for
decades if you never changed your source .jsp files or re-deployed your
application.
-chris
> On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz <
> chris@christopherschultz.net> wrote:
>
>> Subudh,
>>
>> On 3/21/24 07:32, Subodh Joshi wrote:
>>> Expert,
>>>
>>> Recently i came across a issue and i was getting no clue what was going
>> on
>>> wrong with the Application.
>>>
>>> So here is the issue , we were getting following issue in our web
>>> application(Springboot+Embedded Tomcat) which is deployed into Linux
>> machine
>>>
>>> java.lang.ClassNotFoundException:
>>>> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
>>>> at
>>>> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
>>>> at
>>>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
>>>> at
>>>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
>>>> at
>>>>
>> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
>>>> at
>>>>
>> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
>>>> at
>>>>
>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
>>>> at
>>>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
>>>> at
>>>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
>>>> at
>> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>> at
>>>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>> at
>>>>
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>>>> at
>>>>
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>>>> at
>>>>
>> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
>>>> at
>>>>
>> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
>>>> at
>>>>
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>> at
>>>>
>> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
>>>> at
>>>>
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>>>
>>>
>>> but how to reproduce this issue we were not able to get any clue.
>>>
>>> But Recently i got to know how to reproduce this issue
>>> 1- Start the web-application.
>>> 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
>>> 3- Now access web-application through browser.
>>> 4- But dont access all JSP pages.
>>> 5- Suppose application have A,B,C,D.jsp pages .
>>> 6- User accesses A,B.jsp only
>>> 7- Now user or any cron job deleted /tmp/tomcat directory
>>
>> Don't do that.
>>
>>> 8- Now user click on C.jsp it is throwing above given exception.
>>> 9- Now click on D.jsp it will work fine as tomcat will create /tmp/tomcat
>>> ..... directory again.
>>> 10. But C.jsp which was failed with 500 error will never come upto the
>> time
>>> tomcat will not start.
>>>
>>> Can someone please explain how tomcat works here and why it throws an
>>> exception and wont allow that jsp page to come up without restart?
>>
>> Tomcat is caching resources and does not expect another process to come
>> around and delete its files. I'm not sure exactly why the C.jsp/C.class
>> file ends up getting "stuck" while D.jsp/D.class does not.
>>
>> You vould try setting cachingAllowed="false" in your <Resources> element
>> in META-INF/context.xml (or embedded equivalent) to disable caching.
>> Performance will likely suffer, but perhaps it will reolve this issue.
>>
>> Why not just _stop deleting Tomcat's work directory_?
>>
>> -chris
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>
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Re: Tomcat Internal Architect for JSP compilation?
Posted by Subodh Joshi <su...@gmail.com>.
Hi Chris
Thanks for your response.
So i added below properties in application.properties file
> spring.mvc.cache-control.cache-allowed=false
>
> and then Deleted the /tmp/tomcat directory . So now when i restart the
server A.jsp only fail with 500 error (ClassNotFoundException) as this is
first page which i was trying to load, rest JSP pages working fine without
any issue .
Why i am doing this exercise?
In our some of the deployed linux environment many clients are complaining
about this issue , We tried to monitor who actually deleting these
/tmp/tomcat folder but still we are not able to figure it out and we are
not able to reproduce it . So i have to do reproduce it manually deleting
the /tmp/tomcat directory.
thanks & regards
On Thu, Mar 21, 2024 at 7:24 PM Christopher Schultz <
chris@christopherschultz.net> wrote:
> Subudh,
>
> On 3/21/24 07:32, Subodh Joshi wrote:
> > Expert,
> >
> > Recently i came across a issue and i was getting no clue what was going
> on
> > wrong with the Application.
> >
> > So here is the issue , we were getting following issue in our web
> > application(Springboot+Embedded Tomcat) which is deployed into Linux
> machine
> >
> > java.lang.ClassNotFoundException:
> >> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
> >> at
> >> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
> >> at
> >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
> >> at
> >> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
> >> at
> >>
> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
> >> at
> >>
> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
> >> at
> >>
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
> >> at
> >> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
> >> at
> >> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
> >> at
> jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >> at
> >> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >> at
> >>
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
> >> at
> >>
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
> >> at
> >>
> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
> >> at
> >>
> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
> >> at
> >>
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >> at
> >>
> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
> >> at
> >>
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
> >>
> >
> > but how to reproduce this issue we were not able to get any clue.
> >
> > But Recently i got to know how to reproduce this issue
> > 1- Start the web-application.
> > 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
> > 3- Now access web-application through browser.
> > 4- But dont access all JSP pages.
> > 5- Suppose application have A,B,C,D.jsp pages .
> > 6- User accesses A,B.jsp only
> > 7- Now user or any cron job deleted /tmp/tomcat directory
>
> Don't do that.
>
> > 8- Now user click on C.jsp it is throwing above given exception.
> > 9- Now click on D.jsp it will work fine as tomcat will create /tmp/tomcat
> > ..... directory again.
> > 10. But C.jsp which was failed with 500 error will never come upto the
> time
> > tomcat will not start.
> >
> > Can someone please explain how tomcat works here and why it throws an
> > exception and wont allow that jsp page to come up without restart?
>
> Tomcat is caching resources and does not expect another process to come
> around and delete its files. I'm not sure exactly why the C.jsp/C.class
> file ends up getting "stuck" while D.jsp/D.class does not.
>
> You vould try setting cachingAllowed="false" in your <Resources> element
> in META-INF/context.xml (or embedded equivalent) to disable caching.
> Performance will likely suffer, but perhaps it will reolve this issue.
>
> Why not just _stop deleting Tomcat's work directory_?
>
> -chris
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
Subodh Chandra Joshi
subodh1_joshi82@yahoo.co.in
http://www.trendsinnews.com
Re: Tomcat Internal Architect for JSP compilation?
Posted by Christopher Schultz <ch...@christopherschultz.net>.
Subudh,
On 3/21/24 07:32, Subodh Joshi wrote:
> Expert,
>
> Recently i came across a issue and i was getting no clue what was going on
> wrong with the Application.
>
> So here is the issue , we were getting following issue in our web
> application(Springboot+Embedded Tomcat) which is deployed into Linux machine
>
> java.lang.ClassNotFoundException:
>> org.apache.jsp.WEB_002dINF.jsp.ImportTab_jsp
>> at
>> java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
>> at
>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)
>> at
>> org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:58)
>> at
>> org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:151)
>> at
>> org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:189)
>> at
>> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:410)
>> at
>> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
>> at
>> org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
>> at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>> at
>> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:110)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
>> at
>> org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
>> at
>> org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365)
>> at
>> org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:100)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126)
>> at
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> com.comptel.catalog.support.filter.OperationClientRestFilter.doFilter(OperationClientRestFilter.java:86)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>> at
>> com.comptel.catalog.support.filter.JwtSecurityChainFilter.doFilter(JwtSecurityChainFilter.java:100)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374)
>>
>
> but how to reproduce this issue we were not able to get any clue.
>
> But Recently i got to know how to reproduce this issue
> 1- Start the web-application.
> 2- Tomcat will create a directory under /tmp/tomcat.*/.././......
> 3- Now access web-application through browser.
> 4- But dont access all JSP pages.
> 5- Suppose application have A,B,C,D.jsp pages .
> 6- User accesses A,B.jsp only
> 7- Now user or any cron job deleted /tmp/tomcat directory
Don't do that.
> 8- Now user click on C.jsp it is throwing above given exception.
> 9- Now click on D.jsp it will work fine as tomcat will create /tmp/tomcat
> ..... directory again.
> 10. But C.jsp which was failed with 500 error will never come upto the time
> tomcat will not start.
>
> Can someone please explain how tomcat works here and why it throws an
> exception and wont allow that jsp page to come up without restart?
Tomcat is caching resources and does not expect another process to come
around and delete its files. I'm not sure exactly why the C.jsp/C.class
file ends up getting "stuck" while D.jsp/D.class does not.
You vould try setting cachingAllowed="false" in your <Resources> element
in META-INF/context.xml (or embedded equivalent) to disable caching.
Performance will likely suffer, but perhaps it will reolve this issue.
Why not just _stop deleting Tomcat's work directory_?
-chris
---------------------------------------------------------------------
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