I am able to set session attribute in scriptlet but when I am trying to set session attribute inside java class it shows error like "session cannot be resolved". So how to set session in java?
<%String username = (String)request.getAttribute("un");
session.setAttribute("UserName", username);%>
By Java class, I am assuming you mean a Servlet class as setting session attribute in arbitrary Java class does not make sense.You can do something like this in your servlet's doGet/doPost methods
public void doGet(HttpServletRequest request, HttpServletResponse response) {
HttpSession session = request.getSession();
String username = (String)request.getAttribute("un");
session.setAttribute("UserName", username);
}
By default session object is available on jsp page(implicit object). It will not available in normal POJO java class. You can get the reference of HttpSession object on Servelt by using HttpServletRequest
HttpSession s=request.getSession()
s.setAttribute("name","value");
You can get session on an ActionSupport based Action POJO class as follows
ActionContext ctx= ActionContext.getContext();
Map m=ctx.getSession();
m.put("name", value);
look at: http://ohmjavaclasses.blogspot.com/2011/12/access-session-in-action-class-struts2.html
package Jclasspackage
public class Jclass {
public String uname ;
/**
* @return the uname
*/
public String getUname() {
return uname;
}
/**
* @param uname the uname to set
*/
public void setUname(String uname) {
this.uname = uname;
}
public Jclass() {
this.uname = null;
}
public static void main(String[] args) {
}
}
<%@ page language="java"
import="java.util.*,java.io.*"
pageEncoding="ISO-8859-1"%>
<jsp:directive.page import="Jclasspackage.Jclass.java" />
<% Jclass jc = new Jclass();
String username = (String)request.getAttribute("un")
jc.setUname(username);
%>
In this way you can access the username in the java file using "this.username" in the class
I am try to catch your point.I hope it is helpful.....
if (session.isNew()){
title = "Welcome to my website";
session.setAttribute(userIDKey, userID);
Try this.
<%@page language="java" session="true" %>
Source: Stackoverflow.com