AllUser.java Source code

Introduction

Here is the source code for AllUser.java

Source

/*
 * 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 java.io.PrintWriter;
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 com.mongodb.MongoClient;

import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;

import com.owlike.genson.Genson;
import java.util.ArrayList;

/**
 *
 * @author hariom
 */
@WebServlet(urlPatterns = { "/AllUser" })
public class AllUser extends HttpServlet {

    ArrayList<String> al;

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            al = new ArrayList<String>();
            // To connect to mongodb server
            MongoClient mongoClient = new MongoClient("localhost", 27017);

            // Now connect to your databases
            DB db = mongoClient.getDB("XHiring");
            System.out.println("Connect to database successfully");
            DBCollection coll = db.getCollection("users");
            System.out.println("Collection mycol selected successfully");

            DBCursor cursor = coll.find();
            int i = 1;
            try {
                while (cursor.hasNext()) {

                    al.add(cursor.next().toString());
                    i++;
                }
            } finally {
                System.out.println("arra: " + al);
                Genson obj = new Genson();
                out.println(obj.serialize(al));
            }

        } catch (Exception e) {
            System.err.println(e.getClass().getName() + ": " + e.getMessage());
        }
    }

    // <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>

}