mypackage.GetDatabase.java Source code

Introduction

Here is the source code for mypackage.GetDatabase.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.
 */
package mypackage;

import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;
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.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 *
 * @author Kapil Gehlot
 */
public class GetDatabase extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            MongoClient mongoClient = new MongoClient("localhost", 27017);
            HttpSession httpSession = request.getSession(false);
            DB db = mongoClient.getDB("mydb");
            DBCollection coll = db.getCollection(httpSession.getAttribute("uname") + "DB");
            JSONObject jSONObject = new JSONObject();
            JSONObject jSONObject1 = new JSONObject();
            JSONArray jSONArray = new JSONArray();
            DBCursor cursor = coll.find();
            int i = 0;
            while (cursor.hasNext()) {
                jSONArray.put(cursor.next());
                i++;
            }
            jSONObject.put("db", jSONArray);
            jSONObject.put("counter", i);
            out.println(jSONObject);

        } catch (Exception e) {

        }
    }

    // <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>

}