I have this logon.jsp page which was developed from struts. I got this new assigment to add struts2 tag to it. I've migrated other mixed pages with sitemesh successfully. This logon.jsp page doesn't use sitemesh and I only add one struts2 tag line <s:url action=""/>. I don't know what happend. The below is the execption:
11:17:57,345 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception java.lang.NullPointerException at org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:58) at org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport .java:54) at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport .java:49) at org.apache.jsp.logon_jsp._jspx_meth_s_form_0(logon_jsp.java:520) at org.apache.jsp.logon_jsp._jspService(logon_jsp.java:189) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:39) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:301) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.j ava:263) at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesReque stProcessor.java:239) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequest Processor.java:302) at com.greenview.fpi.web.theme.ThemeRequestProcessor.processForwardConfig(ThemeReq uestProcessor.java:46) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:697) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 9) at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:301) at org.apache.catalina.authenticator.FormAuthenticator.forwardToLoginPage(FormAuth enticator.java:315) at org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthentica tor.java:243) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.ja va:490) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 7) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConn ection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:5 27) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread. java:112) at java.lang.Thread.run(Thread.java:595) 11:17:57,345 ERROR [[action]] Servlet.service() for servlet action threw exception java.lang.NullPointerException at org.apache.struts2.views.jsp.TagUtils.getStack(TagUtils.java:58) at org.apache.struts2.views.jsp.StrutsBodyTagSupport.getStack(StrutsBodyTagSupport .java:54) at org.apache.struts2.views.jsp.ComponentTagSupport.doStartTag(ComponentTagSupport .java:49) at org.apache.jsp.logon_jsp._jspx_meth_s_form_0(logon_jsp.java:520) at org.apache.jsp.logon_jsp._jspService(logon_jsp.java:189) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:39) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:301) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.j ava:263) at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesReque stProcessor.java:239) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequest Processor.java:302) at com.greenview.fpi.web.theme.ThemeRequestProcessor.processForwardConfig(ThemeReq uestProcessor.java:46) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:697) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 9) at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFil terChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:173) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.jav a:672) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispat cher.java:463) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher. java:398) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.ja va:301) at org.apache.catalina.authenticator.FormAuthenticator.forwardToLoginPage(FormAuth enticator.java:315) at org.apache.catalina.authenticator.FormAuthenticator.authenticate(FormAuthentica tor.java:243) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.ja va:490) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:10 7) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConn ection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:5 27) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread. java:112) at java.lang.Thread.run(Thread.java:595) I add sitemesh plugin and struts2-struts1-plugin, they don't help. I've debuged and find the problem is org.apache.struts2.dispatcher.FilterDispatcher.doFilter() didn't get called. I got stuck here! Please help me! Any advises would be appreciated. -- View this message in context: http://www.nabble.com/NullPointerException-with-Struts-and-Struts2-plus-Sitemesh-tf3853336.html#a10916370 Sent from the Struts - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
