How to check user session availability in Struts application

Posted on 2008-10-17
Medium Priority
Last Modified: 2013-11-24
Dear Experts,

Our application is based on Struts and JSP. My problem is if somehow if the user is getting the URL of any page in our application and accessing that page directly with out login, actually it should not display the requested page. instead it should take the user to the login page. The easiest way is to check for the user session in each and every page. But i want to centralise this at one particular point.

Can i know the solution if there is any way to do in this manner.

Question by:CIPL-Senthil
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
LVL 20

Expert Comment

by:chaitu chaitu
ID: 22738482
you can implement this using filters;

map all jsps to servlet filter;then if anybody accessing any jsp every jsp request will go into this filter.in the filter you can put only login.jsp
LVL 20

Accepted Solution

chaitu chaitu earned 2000 total points
ID: 22738496
check this code.in web.xml u need to do like this;

            <filter-name>SessionFilter </filter-name>
            <filter-class>com.xxx.SessionFilter </filter-class>
public class SessionFilter implements Filter {
	private String page = "/session_expired.jsp";
	ArrayList excludedList = new ArrayList();
	public void destroy() {
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
			ServletException {
		int position = ((HttpServletRequest) request).getRequestURI().lastIndexOf("/");
		boolean flag = true;		
		String requestedPage = ((HttpServletRequest) request).getRequestURI().substring(position);
		HttpServletRequest req = (HttpServletRequest)request;
		HttpSession session  = req.getSession(false);
		UserCredentials uc   = null;
			uc   = (UserCredentials)session.getAttribute("USER_CREDENTIALS");
		if ((((HttpServletRequest) request).getRequestedSessionId() != null && !requestedPage.equals("/index.html") && !requestedPage.equals("/test_login.jsp")
				&& ((HttpServletRequest) request).isRequestedSessionIdValid() == false) || uc==null) {
			if(uc == null)
				for(int i=0;i<excludedList.size();i++)
						flag = false;
				RequestDispatcher rd = request.getRequestDispatcher(page);
				rd.forward(request, response);
			else {
				chain.doFilter(request, response);
		} else {
			chain.doFilter(request, response);
	public void init(FilterConfig filterConfig) throws ServletException {
		if (filterConfig.getInitParameter("page") != null) {
			page = filterConfig.getInitParameter("page");			

Open in new window


Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
A solution for Fortify Path Manipulation.
The viewer will learn how to implement Singleton Design Pattern in Java.
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
Suggested Courses

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question