java - getSession(). getAttribute(. . . . ) - gt; null - Stack Overflow I used <%= request getParameter("loggedUser") %> For some reason I saw [1] in java logs when I used request getSession() getAttribute("loggedUser") , I also observed in the same code that request getParameter works, at least when values are passed by query strings and the "unchecked or unsafe operations" disappears from the log
Difference between getAttribute () and getParameter () - Stack Overflow We use request getParameter() to extract request parameters (i e data sent by posting a html form ) The request getParameter() always returns String value and the data come from client request getAttribute() We use request getAttribute() to get an object added to the request scope on the server side i e using request setAttribute()
HttpSession - how to get the session. setAttribute? If you want an existing session, you will have to get the session from the request HttpSession session = request getSession(true) String username = (String)session getAttribute("username");
Managing session and request attributes in Servlet request getSession() setAttribute("foo") And get attribute using: request getSession() getAttribute("foo") It will be used in the context of the request and not effect other requests, so you don't need to remove attribute Read more in Servlets tutorial Servlets provide an outstanding technical solution: the HttpSession API
request. setAttribute and request. getSession (). setAttribute () When you use request setAttribute, you store something for the same request object You can use this attribute later on when you do a forward from your current servlet jsp to some other servlet jsp When you use request getSession() setAttribute() , you store something for that particular user session
How to use session in JSP pages to get information? I have a JSP page used for editing some user's info When a user logins to the website, I keep the information in the session, then in my edit page I try the following: lt;%!