hi, i am facing the below problem in my site... i have used struts, hibernate, mysql , tomcat 5.5 tools to make my site work...

I use,
struts 1.1
hibernate 3.0 ...having configuration file to connect db, mapping files
tomcat 5.5
mysql 5.0

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HTTP Status 500 -

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type Exception report

message

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

exception

javax.servlet.ServletException: Servlet.init() for servlet action threw exception
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)


root cause

java.lang.NullPointerException
org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:1003)
org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:955)
org.apache.struts.action.ActionServlet.init(ActionServlet.java:470)
javax.servlet.GenericServlet.init(GenericServlet.java:211)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Unknown Source)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.