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. */ package servlets; import java.io.IOException; import java.io.PrintWriter; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException; import java.io.BufferedReader; /** * * @author user */ @WebServlet(name = "TestServlet", urlPatterns = { "/TestServlet" }) public class TestServlet extends HttpServlet { /** * Processes requests for both HTTP <code>GET</code> and <code>POST</code> * methods. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); // Json handle part StringBuilder sb = new StringBuilder(); BufferedReader reader = request.getReader(); try { String line; while ((line = reader.readLine()) != null) { sb.append(line).append('\n'); } String a = sb.toString(); JSONParser jp = new JSONParser(); Object o = jp.parse(a); JSONObject jo = (JSONObject) o; // JSON part , get values from json. String name = (String) jo.get("name"); String email = (String) jo.get("email"); String address = (String) jo.get("address"); String birthday = (String) jo.get("birthday"); // End of JSON part. out.println("<!DOCTYPE html>"); out.println("<html>"); out.println("<head>"); out.println("<title>Servlet TestServlet</title>"); out.println("</head>"); out.println("<body>"); out.println("name: " + name + "<br>"); out.println("email: " + email + "<br>"); out.println("birthday: " + birthday + "<br>"); out.println("address: " + address + "<br>"); out.println("<h1>Servlet TestServlet at " + request.getContextPath() + "</h1>"); out.println("</body>"); out.println("</html>"); } catch (ParseException ex) { Logger.getLogger(TestServlet.class.getName()).log(Level.SEVERE, null, ex); } finally { /* TODO output your page here. You may use following sample code. */ reader.close(); out.close(); } } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> /** * Handles the HTTP <code>GET</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 doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * 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 { processRequest(request, response); } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> }