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· Web Dev Zone

Make the transition to Node.js if you are a Java, PHP, Rails or .NET developer with these resources to help jumpstart your Node.js knowledge plus pick up some development tips.  Brought to you in partnership with IBM.

I was facing a problem where while a person logs out his session is invalidated but the JSESSIONID still remained in the browser. As a result while logging in the Java API used to get the request from the browser along with a JSESSIONID(Just the ID since the session was invalidated) and would create the new session with the same ID. To fix this problem I used the above code so that whenever a user logs out the entire JSESSIONID becomes empty and thus cookie wont exist for that site.Anyone using JAVA can utilize this in their code.

@RequestMapping(value = "/logout", method = RequestMethod.POST)
public void logout(HttpServletRequest request,
HttpServletResponse response) {
/* Getting session and then invalidating it */
HttpSession session = request.getSession(false);
if (request.isRequestedSessionIdValid() && session != null) {
session.invalidate();
}
handleLogOutResponse(response);
}

/**
 * This method would edit the cookie information and make JSESSIONID empty
 * while responding to logout. This would further help in order to. This would help
 * to avoid same cookie ID each time a person logs in
 * @param response
 */
private void handleLogOutResponse(HttpServletResponse response) {
Cookie[] cookies = request.getCookies();
for (Cookie cookie : cookies) {
cookie.setMaxAge(0);
cookie.setValue(null);
cookie.setPath("/");
response.addCookie(cookie);
}
}

Learn why developers are gravitating towards Node and its ability to retain and leverage the skills of JavaScript developers and the ability to deliver projects faster than other languages can.  Brought to you in partnership with IBM.

Topics:
web dev

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