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Re: Re[dwr-user] verse Ajax not wrking plz help

by Lance Java :: Rate this Message:

WebContextFactory.get() only works for threads that are initiated by a DWR request. I'm not sure of the scope of Mani but I'm guessing that the constructor is not invoked by a DWR request. If you move the WebContextFactory.get() call inside getit() it will hopefully work.

Cheers,

Lance.

2009/6/12 aakar <aakar.gupta@...>

java file

package mani;
import java.util.Collection;

import javax.servlet.ServletContext;

import org.directwebremoting.ServerContext;
import org.directwebremoting.ServerContextFactory;
import org.directwebremoting.WebContextFactory;
import org.directwebremoting.proxy.dwr.Util;

public class Mani
{
private ServerContext sctx=null;

public Mani()
{
ServletContext servletContext =
WebContextFactory.get().getServletContext();
sctx = ServerContextFactory.get(servletContext);

}
public synchronized void getit() throws InterruptedException
{
Collection sessions = sctx.getScriptSessionsByPage("/Aakar/index.html");
Util pages = new Util(sessions);
System.out.println("Hello");
pages.setValue("one","Calling");
Thread.sleep(5000);
pages.setValue("one","Established");

}

}

web.xml file

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="Aakar" version="2.5">

<servlet>
<servlet-name>dwr-invoker</servlet-name>

<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>activeReverseAjaxEnabled</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>initApplicationScopeCreatorsAtStartup</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>maxWaitAfterWrite</param-name>
<param-value>500</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
</web-app>

dwr.xml

<!DOCTYPE dwr PUBLIC
"-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN"
"http://getahead.org/dwr/dwr20.dtd">

<dwr>
<allow>
<create creator="new" javascript="Mani" scope="application" >

</create>
</allow>
</dwr>

index.html file

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Aakar</title>
<script type='text/javascript' src='../dwr/interface/Mani.js'></script>
<script type='text/javascript' src='../dwr/engine.js'></script>
<script type='text/javascript' src='../dwr/util.js'></script>
<script type="text/javascript">
</script>
</head>
<body onload="dwr.engine.setActiveReverseAjax(true);">
<br/>
<div id="one">
</div>
<br/>
<input type="button" value="Yo Man" onclick="Mani.getit();" />
<script type="text/javascript">
</script>
</body>
</html>

the above code is not wrking out ....plz help me .........
Thanx in advance
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« Return to Thread: Reverse Ajax not wrking plz help