Restricting link & form actions within the same portlet

[girishramagiri]

Hi,

I have integrated an already existing application within a portlet.
However I have observed issue with respect to link and form actions.

Suppose if I click on a button in a jsp, the destination jsp spreads to the whole screen overlapping all the porlets.
The code for onclick javascript is:
function doLink(src)
{
window.location = src;
}

What changes need to be done inorder to view the destination jsp within the same portlet after clicking on a button (form submit) or on a link?

Many Thanks in Advance,
Girish

[bvogt]

Have you considered an integration of your application by an iframe tag?

Unfortunately this may cause some (ugly) scrollbar issues...

Burkhard

[theute]

You need to use portlet URLS, see the portlet spec.

[girishramagiri]

Hi Thomas,

Thanks for your input.

Inorder to use PortletURL, I need to extend PortalJSP & use portlet taglib in the jsp which has the buttons.

After extending the PortalJSP & incorporating portlet taglib, the existing jsp along with the existing tags looks as below:

<%@ page language="java" extends="org.jboss.portal.core.servlet.jsp.PortalJsp" %>
<%@ page language="java" pageEncoding="UTF-8"%>

<%@ page import="com.myapp.web.user.bean.User" %>
<%@ page import="com.myapp.web.utility.apputils.component.AppConstants" %>
<%@ page import="com.myapp.web.utility.apputils.component.ActionConstants"%>
<%@ page import="com.myapp.web.resources.ApplicationProperties;"%>

<%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<%@ taglib uri="/WEB-INF/struts/tld/struts-nested.tld" prefix="nested" %>

As soon as the jsp loads, NullPointerException is thrown as follows:

2006-11-16 22:06:20,677 DEBUG [org.apache.catalina.loader.WebappClassLoader] Loading class from local repository

2006-11-16 22:06:20,677 INFO [STDOUT] ERROR [jsp].error:119 - Servlet.service() for servlet jsp threw exception

java.lang.NullPointerException

 at org.jboss.portal.core.servlet.jsp.PortalJsp.service(PortalJsp.java:140)

 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)

 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)

 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)

 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)

 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

 at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)

 at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)

 at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)

 at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)

 at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085)

 at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398)

 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241)

 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)

 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)

 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)

Is this because the portlet tags will not work if the jsp contains other functionality tags?

However I noticed that when I remove PortalJSP & portlet taglib code, the jsp compiles without any error & also loads the contents.

Many Thanks in Advance,
Girish

[theute]

I don't know where you read that you had to extend PortalJSP, but please read the JSR-168 spec, il will help you a lot in portlet development.

You don't need to extend PortalJSP