logout problem using struts

[shrik]

hi everybody.
I have following problem.
There are two pages. index.jsp and main.jsp in my application
Index.jsp contains logging interface in .
It submits password and userid to loginform bean.

following are entries in struts-config.xml file
[CODE=xml]
<action input="index.js p" name="loginform " path="/login" scope="session" type="com.myapp .struts.loginac tion">
<forward name="success" path="/main.jsp"/>
</action>

<action path="/logout" scope="session" type="com.myapp .struts.logouta ction">
<forward name="logout" path="/index.jsp"/>
</action>
[/CODE]
on successfully logged in control is forwarded to main.jsp file. On main.jsp file their is one image having logout caption . so code for it is as follows
[CODE=html]
<html:link page="/logout.do"> <img src="img/logout_deselect .jpg" name="Image11" height="30" border="0"> </html:link>
[/CODE]
Now actionforms are as follows
loginaction.jav a
[code=java]
/*
* loginaction.jav a
*
* Created on February 26, 2007, 10:48 AM
*/

package com.myapp.strut s;

import javax.servlet.h ttp.HttpServlet Request;
import javax.servlet.h ttp.HttpServlet Response;

import org.apache.stru ts.action.Actio n;
import org.apache.stru ts.action.Actio nForm;
import org.apache.stru ts.action.Actio nMapping;
import org.apache.stru ts.action.Actio nForward;
/**
*
* @author root
* @version
*/

public class loginaction extends Action {
/**
* This is the action called from the Struts framework.
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws java.lang.Excep tion
* @return
*/
public ActionForward execute(ActionM apping mapping, ActionForm form,
HttpServletRequ est request, HttpServletResp onse response)
throws Exception {

loginform lform=(com.myap p.struts.loginf orm) form;
// String uid="Welcome" + lform.getUserid ()+"";
// request.getSess ion().setAttrib ute("userName", uid);
response.setHea der("Cache-Control","no-cache"); //Forces caches to obtain a new copy of the page from the origin server
response.setHea der("Cache-Control","no-store"); //Directs caches not to store the page under any circumstance
response.setDat eHeader("Expire s", 0); //Causes the proxy cache to see the page as "stale"
response.setHea der("Pragma","n o-cache");

request.getSess ion();
request.getSess ion().setAttrib ute("loginform" ,lform);
return mapping.findFor ward("success") ;
}
}
[/code]

logoutaction.ja va is as follows
[code=java]
/*
* loginaction.jav a
*
* Created on February 26, 2007, 10:48 AM
*/

package com.myapp.strut s;

import javax.servlet.h ttp.HttpServlet Request;
import javax.servlet.h ttp.HttpServlet Response;

import org.apache.stru ts.action.Actio n;
import org.apache.stru ts.action.Actio nForm;
import org.apache.stru ts.action.Actio nMapping;
import org.apache.stru ts.action.Actio nForward;
/**
*
* @author root
* @version
*/

public class logoutaction extends Action {

/* forward name="success" path="" */
// private final static String SUCCESS = "success";

/**
* This is the action called from the Struts framework.
* @param mapping The ActionMapping used to select this instance.
* @param form The optional ActionForm bean for this request.
* @param request The HTTP Request we are processing.
* @param response The HTTP Response we are processing.
* @throws java.lang.Excep tion
* @return
*/
public ActionForward execute(ActionM apping mapping, ActionForm form,
HttpServletRequ est request, HttpServletResp onse response)
throws Exception
{
// request.getSess ion().setAttrib ute("userName", null);
request.getSess ion().removeAtt ribute("loginfo rm");
request.getSess ion().invalidat e();
return mapping.findFor ward("logout");

}
}
[/code]



So when i clicks on logout image the control is forwarded to index.jsp
But when i press backbutton of the browser the main.jsp page is displayed.
i.e. logout is not working properly.
I want functionality like when back button will be pressed "session expirred messaged should be displayed and control should be forwared to index.jsp page

Can anybody help me out with this

[acoder]

Javascript and Java are not the same language. Moved to the Java forum.