Struts JSP exception

[Ken Harris]

I have searched the FAQ and looked at similar problems, but I cannot find a solution to this one.

I have inherited a program that uses a session-based, multi-page form. The users walk through several worksheets then end up on a final form to verify the summary. Once they click "Finish" they are moved to a summary page which displays the results of the processing from the form bean in session, then the session form bean is cleared. At any time before hitting finish, the users can walk back and forth between pages with previous and next buttons (and actions). All of this is working fine. Here's the issue. Once on the final summary screen, the user has 2 selections - Print and Continue. Original design has "Continue" disabled until after Print is clicked. Some users deciding they don't want to print, hit the browser back button. They are returned to the final form. If they hit "Finish" the program recognizes this was already done and places them on an error page saying duplicate submissions are not allowed. However, if they hit "Previous", the application generates the following exception:

2011-03-30 14:04:10,380 ERROR [org.apache.struts.util.RequestUtils] (http-KHARRIS1W%2F10.120.243.93-8080-6) Error creating form bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean
java.lang.InstantiationException: mia.pt.action.foreignLAH.ForeignLAHFormBean
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:259)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:213)
at org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:319)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:192)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at mia.pt.servlet.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)

I have been unable to figure out how to catch this exception anywhere. I would prefer to catch it and "gently" place the user on an appropriate screen.

We are changing the application to allow "continue" without print (actually we are making other changes as well for navigation) but it still raises the "what if the user hits the back button" question.

Any suggestions or help with this will be greatly appreciated.

Thanks in advance.

[Stefan Evans]

Is there a "caused by" to this stack trace? Might give a better idea of the underlying error.
Check the constructor of the mia.pt.action.foreignLAH.ForeignLAHFormBean for the cause of the error.

[Ken Harris]

The bean only uses the default constructor, so it is really only comprised of the setters, getters and validation

Here's the full exception:

2011-03-30 14:04:10,380 ERROR [org.apache.struts.util.RequestUtils] (http-KHARRIS1W%2F10.120.243.93-8080-6) Error creating form bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean
java.lang.InstantiationException: mia.pt.action.foreignLAH.ForeignLAHFormBean
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:259)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:213)
at org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:319)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:192)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at mia.pt.servlet.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)
2011-03-30 14:04:10,380 ERROR [org.apache.struts.util.RequestUtils] (http-KHARRIS1W%2F10.120.243.93-8080-6) Error creating form bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean
java.lang.InstantiationException: mia.pt.action.foreignLAH.ForeignLAHFormBean
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:259)
at org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:213)
at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:526)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:503)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspx_meth_html_005fform_005f0(foreignLAHW3_jsp.java:667)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspService(foreignLAHW3_jsp.java:308)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:543)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:480)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:640)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:634)
at sun.reflect.GeneratedMethodAccessor350.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:129)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:152)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:138)
at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:760)
at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:892)
at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:462)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspx_meth_tiles_005finsert_005f1(layoutwide_jsp.java:1108)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspService(layoutwide_jsp.java:246)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1083)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:295)
at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:271)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:332)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at mia.pt.servlet.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)
2011-03-30 14:04:10,380 WARN [org.apache.struts.util.PropertyMessageResources] (http-KHARRIS1W%2F10.120.243.93-8080-6) Resource org/apache/struts/taglib/html/LocalStrings_en_US.properties Not Found.
2011-03-30 14:04:10,380 WARN [org.apache.struts.util.PropertyMessageResources] (http-KHARRIS1W%2F10.120.243.93-8080-6) Resource org/apache/struts/taglib/html/LocalStrings_en.properties Not Found.
2011-03-30 14:04:10,411 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/pt].[jsp]] (http-KHARRIS1W%2F10.120.243.93-8080-6) Servlet.service() for servlet jsp threw exception
javax.servlet.jsp.JspException: Exception creating bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean under form name foreignLAHBean
at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:536)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:503)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspx_meth_html_005fform_005f0(foreignLAHW3_jsp.java:667)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspService(foreignLAHW3_jsp.java:308)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:543)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:480)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:640)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:634)
at sun.reflect.GeneratedMethodAccessor350.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:129)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:152)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:138)
at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:760)
at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:892)
at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:462)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspx_meth_tiles_005finsert_005f1(layoutwide_jsp.java:1108)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspService(layoutwide_jsp.java:246)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1083)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:295)
at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:271)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:332)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at mia.pt.servlet.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)
2011-03-30 14:04:10,411 ERROR [org.apache.struts.taglib.tiles.InsertTag] (http-KHARRIS1W%2F10.120.243.93-8080-6) ServletException in '/WEB-INF/jsp/foreignLAHW3.jsp': javax.servlet.jsp.JspException: Exception creating bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean under form name foreignLAHBean
org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Exception creating bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean under form name foreignLAHBean
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:515)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:543)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:480)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968)
at org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:640)
at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:634)
at sun.reflect.GeneratedMethodAccessor350.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:129)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:152)
at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:138)
at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:760)
at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:892)
at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:462)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspx_meth_tiles_005finsert_005f1(layoutwide_jsp.java:1108)
at org.apache.jsp.WEB_002dINF.tiles.layoutwide_jsp._jspService(layoutwide_jsp.java:246)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:444)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1083)
at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:295)
at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:271)
at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:332)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at mia.pt.servlet.SessionTimeoutFilter.doFilter(SessionTimeoutFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:662)
Caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException: Exception creating bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean under form name foreignLAHBean
at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852)
at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspService(foreignLAHW3_jsp.java:315)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
... 66 more
Caused by: javax.servlet.jsp.JspException: Exception creating bean of class mia.pt.action.foreignLAH.ForeignLAHFormBean under form name foreignLAHBean
at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:536)
at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:503)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspx_meth_html_005fform_005f0(foreignLAHW3_jsp.java:667)
at org.apache.jsp.WEB_002dINF.jsp.foreignLAHW3_jsp._jspService(foreignLAHW3_jsp.java:308)
... 69 more

[krishna bala]

Use the following link to get answer for your question
struts -common errors

[Ken Harris]

Krishna, thanks for the link. I have already read that and several other "Common Struts Error" sites. The explanation given there for this exception is not what is happening here. As I said, everything works fine until the session data is cleared, the user hits the back button and then hits a "Previous" button on that screen. This sequence of events should never occur and once we have some "breathing room" on the application, we will change the flow to prevent it. But right now, I need a way to detect this exception and forward the user to an error page.