chain.doFilter(req, resp); is throwing a null pointer exception
chain.doFilter(req, resp); is throwing a null pointer exception
(OP)
Can anyone please explain what are potential reasons for receiving Null pointer exception from
Chain.do(…) call (within a filter)
I have two filters that are defined in my web.xml
When the second filter (WebPerformanceLogging) is calling the chain.do(…) I am getting back
Thanks Lior
Chain.do(…) call (within a filter)
I have two filters that are defined in my web.xml
CODE
<filter>
<filter-name>HibernatePersistence</filter-name>
<display-name>HibernatePersistence</display-name>
<filter-class>
com.regence.mxp.servlet.filter.HibernatePersistence
</filter-class>
</filter>
<filter>
<filter-name>WebPerformanceLogging</filter-name>
<display-name>WebPerformanceLogging</display-name>
<description>Web page performance logger</description>
<filter-class>
com.regence.mxp.web.filter.WebPerformanceLogginFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>HibernatePersistence</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.html</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.htm</url-pattern>
</filter-mapping>
<filter-name>HibernatePersistence</filter-name>
<display-name>HibernatePersistence</display-name>
<filter-class>
com.regence.mxp.servlet.filter.HibernatePersistence
</filter-class>
</filter>
<filter>
<filter-name>WebPerformanceLogging</filter-name>
<display-name>WebPerformanceLogging</display-name>
<description>Web page performance logger</description>
<filter-class>
com.regence.mxp.web.filter.WebPerformanceLogginFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>HibernatePersistence</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.html</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.jsp</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>WebPerformanceLogging</filter-name>
<url-pattern>*.htm</url-pattern>
</filter-mapping>
CODE
12:671 PDT] 6943e414 WebGroup E SRVE0026E: [Servlet Error]-[]: java.lang.NullPointerException
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:441)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:76)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:441)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet._service(StrictLifecycleServlet.java:174)
at com.ibm.ws.webcontainer.servlet.IdleServletState.service(StrictLifecycleServlet.java:313)
at com.ibm.ws.webcontainer.servlet.StrictLifecycleServlet.service(StrictLifecycleServlet.java:116)
at com.ibm.ws.webcontainer.servlet.ServletInstance.service(ServletInstance.java:283)
at com.ibm.ws.webcontainer.servlet.ValidServletReferenceState.dispatch(ValidServletReferenceState.java:42)
at com.ibm.ws.webcontainer.servlet.ServletInstanceReference.dispatch(ServletInstanceReference.java:40)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:76)
Thanks Lior
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