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 com.ritboss.controller; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.util.Iterator; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * * @author swati */ public class AddProductServlet 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 { try { response.setContentType("text/html;charset=UTF-8"); String categoryUrl = request.getRequestURI().toString(); String prodCategory = categoryUrl.substring(categoryUrl.lastIndexOf("/") + 1); System.out.println("Product category is" + prodCategory); InputStreamReader in = new InputStreamReader(request.getInputStream()); BufferedReader bf = new BufferedReader(in); String line = bf.readLine(); JSONArray jsonArray = new JSONArray(line); for (int i = 0; i < jsonArray.length(); i++) { JSONObject json = jsonArray.getJSONObject(i); Iterator keys = json.keys(); while (keys.hasNext()) { String key = (String) keys.next(); String value = json.getString(key); System.out.println("key is: " + key + "Value is " + value); } } try (PrintWriter out = response.getWriter()) { /* TODO output your page here. You may use following sample code. */ out.println("<!DOCTYPE html>"); out.println("<html>"); out.println("<head>"); out.println("<title>Servlet AddProductServlet</title>"); out.println("</head>"); out.println("<body>"); out.println("<h1>Servlet AddProductServlet at " + request.getContextPath() + "</h1>"); out.println("</body>"); out.println("</html>"); } } catch (JSONException ex) { Logger.getLogger(AddProductServlet.class.getName()).log(Level.SEVERE, null, ex); } } // <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> }