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Exception when clicked on twice on a lnk or button. Consistent error

Exception when clicked on twice on a lnk or button. Consistent error

2007-02-08       - By Uday Karrothi

 Back
Reply:     1     2     3     4     5  

Hi guys,

I have been trying to solve this error for a while now.
The issue, when the user click on a link or click on submit button
quickly twice consecutively.

HTTP Status 500 -

-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --

type Exception report

message

description The server encountered an internal error () that prevented
it from fulfilling this request.

exception

javax.servlet.ServletException Source code of javax.servlet.ServletException
  at org.apache.struts.action.RequestProcessor Source code of org.apache.struts.action.RequestProcessor(RequestProcessor
.java:516)
  at org.apache.struts.action.RequestProcessor Source code of org.apache.struts.action.RequestProcessor
(RequestProcessor.java:423)
  at org.apache.struts.action.RequestProcessor Source code of org.apache.struts.action.RequestProcessor(RequestProcessor.java:226)
  at org.apache.struts.action.ActionServlet Source code of org.apache.struts.action.ActionServlet(ActionServlet.java:1164)
  at org.apache.struts.action.ActionServlet Source code of org.apache.struts.action.ActionServlet(ActionServlet.java:397)
  at javax.servlet.http.HttpServlet Source code of javax.servlet.http.HttpServlet(HttpServlet.java:740)
  at javax.servlet.http.HttpServlet Source code of javax.servlet.http.HttpServlet(HttpServlet.java:853)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:247)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:193)
  at net.hyperic.hq.product.servlet.filter.JMXFilter.doFilter(JMXFilter.java:277)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:213)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:193)
  at org.apache.catalina.core.StandardWrapperValve Source code of org.apache.catalina.core.StandardWrapperValve(StandardWrapperValve
.java:256)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardContextValve Source code of org.apache.catalina.core.StandardContextValve(StandardContextValve
.java:191)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.authenticator.AuthenticatorBase Source code of org.apache.catalina.authenticator.AuthenticatorBase
(AuthenticatorBase.java:551)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardContext Source code of org.apache.catalina.core.StandardContext(StandardContext.java:2422)
  at org.apache.catalina.core.StandardHostValve Source code of org.apache.catalina.core.StandardHostValve(StandardHostValve.java
:180)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.valves.ErrorReportValve Source code of org.apache.catalina.valves.ErrorReportValve(ErrorReportValve.java
:163)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardEngineValve Source code of org.apache.catalina.core.StandardEngineValve(StandardEngineValve
.java:174)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.coyote.tomcat4.CoyoteAdapter Source code of org.apache.coyote.tomcat4.CoyoteAdapter(CoyoteAdapter.java:193)
  at org.apache.jk.server.JkCoyoteHandler Source code of org.apache.jk.server.JkCoyoteHandler(JkCoyoteHandler.java:294)
  at org.apache.jk.common.HandlerRequest Source code of org.apache.jk.common.HandlerRequest(HandlerRequest.java:375)
  at org.apache.jk.common.ChannelSocket Source code of org.apache.jk.common.ChannelSocket(ChannelSocket.java:664)
  at org.apache.jk.common.ChannelSocket Source code of org.apache.jk.common.ChannelSocket(ChannelSocket.java:606)
  at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:777)
  at org.apache.tomcat.util.threads.ThreadPool Source code of org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:631)
  at java.lang.Thread Source code of java.lang.Thread(Thread.java:534)


root cause

java.lang.NullPointerException Source code of java.lang.NullPointerException
  at com.nsc.tpms.action.pgEcnDisplayAction.execute(pgEcnDisplayAction.java:219)
  at org.apache.struts.action.RequestProcessor Source code of org.apache.struts.action.RequestProcessor
(RequestProcessor.java:421)
  at org.apache.struts.action.RequestProcessor Source code of org.apache.struts.action.RequestProcessor(RequestProcessor.java:226)
  at org.apache.struts.action.ActionServlet Source code of org.apache.struts.action.ActionServlet(ActionServlet.java:1164)
  at org.apache.struts.action.ActionServlet Source code of org.apache.struts.action.ActionServlet(ActionServlet.java:397)
  at javax.servlet.http.HttpServlet Source code of javax.servlet.http.HttpServlet(HttpServlet.java:740)
  at javax.servlet.http.HttpServlet Source code of javax.servlet.http.HttpServlet(HttpServlet.java:853)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:247)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:193)
  at net.hyperic.hq.product.servlet.filter.JMXFilter.doFilter(JMXFilter.java:277)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:213)
  at org.apache.catalina.core.ApplicationFilterChain Source code of org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:193)
  at org.apache.catalina.core.StandardWrapperValve Source code of org.apache.catalina.core.StandardWrapperValve(StandardWrapperValve
.java:256)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardContextValve Source code of org.apache.catalina.core.StandardContextValve(StandardContextValve
.java:191)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.authenticator.AuthenticatorBase Source code of org.apache.catalina.authenticator.AuthenticatorBase
(AuthenticatorBase.java:551)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardContext Source code of org.apache.catalina.core.StandardContext(StandardContext.java:2422)
  at org.apache.catalina.core.StandardHostValve Source code of org.apache.catalina.core.StandardHostValve(StandardHostValve.java
:180)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.valves.ErrorReportValve Source code of org.apache.catalina.valves.ErrorReportValve(ErrorReportValve.java
:163)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.catalina.core.StandardEngineValve Source code of org.apache.catalina.core.StandardEngineValve(StandardEngineValve
.java:174)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
  at org.apache.catalina.core.StandardPipeline Source code of org.apache.catalina.core.StandardPipeline(StandardPipeline.java:480)
  at org.apache.catalina.core.ContainerBase Source code of org.apache.catalina.core.ContainerBase(ContainerBase.java:995)
  at org.apache.coyote.tomcat4.CoyoteAdapter Source code of org.apache.coyote.tomcat4.CoyoteAdapter(CoyoteAdapter.java:193)
  at org.apache.jk.server.JkCoyoteHandler Source code of org.apache.jk.server.JkCoyoteHandler(JkCoyoteHandler.java:294)
  at org.apache.jk.common.HandlerRequest Source code of org.apache.jk.common.HandlerRequest(HandlerRequest.java:375)
  at org.apache.jk.common.ChannelSocket Source code of org.apache.jk.common.ChannelSocket(ChannelSocket.java:664)
  at org.apache.jk.common.ChannelSocket Source code of org.apache.jk.common.ChannelSocket(ChannelSocket.java:606)
  at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:777)
  at org.apache.tomcat.util.threads.ThreadPool Source code of org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:631)
  at java.lang.Thread Source code of java.lang.Thread(Thread.java:534)




Is this an error in my code? or is this something that anyone else encountered?
Thank you very much for your time.

Sincerely
Uday Chandra

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