Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.json.JSONObject; /** * * @author Kehao Xu */ public class getSession extends HttpServlet { /** * Handles the HTTP <code>POST</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); String result = ""; JSONObject jo = new JSONObject(); if (session.getAttribute("name") != null && session.getAttribute("affiliation") != null && session.getAttribute("cid") != null) { jo.put("name", session.getAttribute("name")); jo.put("affiliation", session.getAttribute("affiliation")); jo.put("cid", session.getAttribute("cid")); result = jo.toString(); } else result = "null"; response.getWriter().write(result); } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }