Can we do the same thing..i.e when user copy paste the URL in new window, he must be redirected to Login page using JSPs. I am using Struts 2.0 framework. I am not using servlets. Filters are available for servlets only or for JSPs also?

TIA

After the session expires. the user is asked to relogin. When he relogins
he must be redirected to the page the where the session expired. I please to send me your
reply to mail id. I am waiting for your reply

thanks in advance

Thank you for this tutorial it’s been very useful. Is there a way to send the user to the page they’ve selected when the session expired?

What I have done is to store the selected link as an attribute and tried to alter the response by setting it as the string of the response.sendRedirect but this isn’t working for me. Do you have any advice as to how I might be able to achieve this?

Thanks.

you’ve got an error in line 34, please remove the semicolon.
Additionally i get the “Cannot create a session after the response has been committed”-message, too, although i don’t put anything in out?!

Any idea?

————–
public class SessionFilter implements Filter {
private ArrayList urlList;
private int totalURLS;

public void destroy() {
}

public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {

HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
String url = request.getServletPath();
boolean noSessionNeeded = false;

for(int i=0; i<totalURLS; i++) {
String pattern=urlList.get(i);
if(url.contains(pattern)) {
noSessionNeeded = true;
break;
}
}

if (!noSessionNeeded) {
HttpSession session = request.getSession(false);
boolean exists=(session!=null);
boolean isNew=session.isNew();
if(!exists) response.sendRedirect("index.jsp");
if(isNew) response.sendRedirect("index.jsp");
}

chain.doFilter(req, res);
}

public void init(FilterConfig config) throws ServletException {
String urls = config.getInitParameter("noSessionNeeded");
StringTokenizer token = new StringTokenizer(urls, ",");

urlList = new ArrayList();

while (token.hasMoreTokens()) {
urlList.add(token.nextToken());

}
totalURLS = urlList.size();
}
}

public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {

HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;

String url = request.getServletPath();
String contextPath = request.getContextPath();
boolean allowedRequest = false;

for(int i=0; i<totalURLS; i++) {
if(url.contains(urlList.get(i))) {
allowedRequest = true;
break;
}
}
if (!allowedRequest) {
HttpSession session = request.getSession();
if (null == session) {
response.sendRedirect(contextPath+”/jsp/loginError.jsp”);
}else{
String logged = (String) session.getAttribute(“logged-in”);
if (logged == null){
response.sendRedirect(contextPath+”/jsp/loginError.jsp”);
}else{
chain.doFilter(request, response);
}
}
} else{
chain.doFilter(request, response);
}

}