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From Hermann X Lau <>
Subject 'Parameter name == null' exception
Date Tue, 28 Apr 2009 15:37:33 GMT
I am receiving this exception in SystemOut.log from my struts portlet.  Can anyone explain
this to me?

[4/28/09 11:15:54:459 EDT] 0000005d WpRequestProc E
processException Root cause: java.lang.IllegalArgumentException: Parameter name == null
  at javax.portlet.filter.PortletRequestWrapper.getParameterValues(
[4/28/09 11:15:54:480 EDT] 0000005d ServletWrappe E   SRVE0068E: Uncaught exception thrown
in one of the service methods of the servlet: /welcomeForward.jsp. Exception throw
n : javax.servlet.ServletException: Exception forwarding for name welcomeDispatch: javax.servlet.ServletException:
Parameter name == null
        at org.apache.jasper.runtime.PageContextImpl.handlePageException(

Here is my struts-config:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration
1.1//EN" "">

      <!-- Data Sources -->

      <!-- Form Beans -->
            <form-bean name="manageFormBean"
            <form-bean name="viewFormBean" type="">

      <!-- Global Exceptions -->

      <!-- Global Forwards -->
            <forward name="welcomeDispatch" path="/" />
            <forward name="reports" path="/reports.jsp" />

      <!-- Action Mappings -->
            <action path="/getReportsView"
                  type="" name="viewFormBean"
                  <forward contextRelative="false" name="failure" path="/failure.jsp">
                  <forward contextRelative="false" name="success" path="/reports.jsp">
            <action path="/saveFavorites"
                  type="" name="manageFormBean"
                  <forward contextRelative="false" name="failure" path="/failure.jsp">
                  <forward contextRelative="false" name="success" path="/messages.jsp">
            <action path="/getReportsManage"
                  type="" name="manageFormBean"
                  <forward contextRelative="false" name="success" path="/manage.jsp">
                  <forward contextRelative="false" name="failure" path="/failure.jsp">
            <action path="/welcomeDispatch"
                  <forward contextRelative="false" name="failure" path="/failure.jsp">
                  <forward contextRelative="false" name="manage" path="/">
                  <forward contextRelative="false" name="view" path="/">
                  <forward contextRelative="false" name="public" path="/">
      <controller processorClass="">

      <!-- Message Resources -->
      <message-resources parameter="ApplicationResources" />


<%@ taglib uri="" prefix="logic" %>
<%@ taglib uri="" prefix="portletAPI" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

<portletAPI:defineObjects />
<logic:forward name="welcomeDispatch"/>

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