Struts problem

From: Nanik Tolaram (nanikjav..otmail.com)
Date: Sun Mar 09 2003 - 08:45:01 EST

  • Next message: Holger Hoffstätte: "Re: Struts problem"

    Hi all,

    Been playing around with Struts + Cayenne and bump into a problem that I've
    been trying to solve for the last 5 hrs.

    I have 1 table a users table and 1 action and 1 .jsp page, when it reached
    the line

          List users = ctxt.performQuery(query);

    it throws the following error,

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

    javax.servlet.ServletException
     at
    org.apache.struts.action.RequestProcessor.processException(RequestProcessor.
    java:526)
     at
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces
    sor.java:467)
     at
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1407)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:496)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
    FilterChain.java:247)
     at
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
    ain.java:193)
     at
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
    va:260)
     at
    org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
    eNext(StandardPipeline.java:643)
     at
    org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)

    ..
    ....

    root cause

    java.lang.NullPointerException
     at
    org.web.application.modules.action.BrowseUsersAction.execute(BrowseUsersActi
    on.java:43)
     at
    org.apache.struts.action.RequestProcessor.processActionPerform(RequestProces
    sor.java:465)
     at
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1407)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:496)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
    FilterChain.java:247)
    ..
    ...
    ..

    I don't understand why this is happening. My DBObject is in the
    org\web\application\modules\db folders. The Cayenne Struts sample is working
    fine. Any idea ?

    Thanks
    Nanik

    This archive was generated by hypermail 2.0.0 : Sun Mar 09 2003 - 08:46:32 EST