Struts 2 Remote Div Problem

[Kabron Kline]

I am trying to build a JSP page that contains a DIV which can be dynamically updated via AJAX whenever a navigation tab is selected. For this, I am using Struts 2.1.8.1 with included dojo plugin.

In my JSP head element, I have the following:

<sx:head cache="true" parseContent="true"/>

Here is the DIV element defined on the same JSP:

<s:url var="content" includeParams="get" action="QueueView" />
<sx:div href="%{content}" loadingText="Loading..." autoStart="true">
Initial Content
</sx:div>

Inside Struts.xml, here is what I have defined for QueueView action (note that there are no special parameters being set for struts.xml):

<action name="QueueView" class="QueueView">
   <result name="success">/jsp/queueView.jsp</result>
</action>

Here is the action class for QueueView:

public class QueueView extends ActionSupport {
	public String execute() {
		return SUCCESS;
	}
}

I am taking this approach because I want to be able to set the href attribute on the div element via javascript according to what action needs to be called (will be set in the DOM when navigation tab buttons are clicked). At this point, all that happens when the page loads is the div displays with the text, "Initial Content" but the AJAX request is never made to the action. I know this because I have set debug break points in the action class, and they have not been hit.

Can somebody help point me in the right direction?

[David Newton]

If it's not a timer, why are you using autoStart? Did you try it without it?

[Kabron Kline]

David Newton wrote:If it's not a timer, why are you using autoStart? Did you try it without it?

I did try that already and it doesn't seem to make a difference.

[Kabron Kline]

Here is a directory listing of my WEB-INF/lib directory:

commons-beanutils-1.7.0.jar
commons-digester-2.0.jar
commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
freemarker-2.3.15.jar
ognl-2.7.3.jar
struts2-core-2.1.8.1.jar
struts2-dojo-plugin-2.1.8.1.jar
struts2-json-plugin-2.1.8.1.jar
xwork-core-2.1.6.jar

Note that all JAR files were obtained from the official Struts website for Struts 2.1.8.1.

[David Newton]

Any JavaScript errors in Firebug?

[Kabron Kline]

As far as I can tell, Firebug is not reporting any JS errors. I am developing this project as a prototype for an internal application that will run in IE6/7 (neither of which are reporting JS errors).

[David Newton]

Is the generated URL correct?

[Kabron Kline]

Generated URL is relative and appears to be correct:

<div dojoType="struts:BindDiv" id="DynamicContent" href="/contextroot/QueueView.action" loadingText="Loading..." showError="true"   parseContent="true">

(Where "contextroot" is the name of the application)

[Kabron Kline]

Also, here is my taglib statement:

<%@ taglib prefix="sx" uri="/struts-dojo-tags" %>

[Kabron Kline]

After working through some example tonight at home, I'm not having any problems getting Ajax to work on Tomcat 6. I'm using WebSphere 6.1 at work and it has been producing odd system log messages. I think my problem has something to do with Websphere, I'll follow up tomorrow.

[David Newton]

I don't even know if the filter compatibility flag is available in WebFear 6, but check for it anyway. It's a known issue.

[Kabron Kline]

It definitely looks like an issue with WebSphere 6.1.0.2. I set "com.ibm.ws.webcontainer.invokefilterscompatibility" to true in the container settings, but that didn't produce any results. I'm also seeing the following after every request:

[3/25/10 9:53:19:416 EDT] 0000001f SRTServletRes W   WARNING: Cannot set status. Response already committed.
[3/25/10 9:53:19:416 EDT] 0000001f SRTServletRes W   WARNING: Cannot set header. Response already committed.

This thread describes the same problem with the strange log message, but it doesn't address non-functional Ajax functionality:

http://www.coderanch.com/t/485837/Struts/Application-Frameworks/Struts-Reponse-already-committed-errors

Per some recommendations I've read, I'm going to install Fix Pack 5 for WebSphere 6.1.