John Topley's Knowledgebase

Checking For A Valid HTTP Session

Wednesday, 20 August 2003

This Java code checks for a valid HTTP Session object within an HTTP request. It assumes the existence of a User class.

public boolean isSessionValid(HttpServletRequest request)
{
  if (request == null)
  {
    return false;
  }

  HttpSession session = request.getSession(false);

  if (session == null)
  {
    return false;
  }

  User user = (User) session.getAttribute(Constants.USER_KEY);
  return (user == null);
}

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