mypackage.Login.java Source code

Introduction

Here is the source code for mypackage.Login.java

Source

/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package mypackage;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
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;

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

    public boolean collectionExists(String name, DB db) {
        Set<String> collNames = db.getCollectionNames();
        for (final String n : collNames) {
            if (n.equalsIgnoreCase(name)) {
                return true;
            }
        }
        return false;
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            String getUname = request.getParameter("uname");
            String getPass = request.getParameter("upass");
            MongoClient mongoClient = new MongoClient("localhost", 27017);
            DB db = mongoClient.getDB("mydb");
            DBCollection coll = db.getCollection("ulogin");
            DBObject bObject = new BasicDBObject();
            bObject.put(getUname, getPass);
            DBCursor bCursor = coll.find(bObject);
            int count = bCursor.count();
            if (count == 1) {
                HttpSession httpSession = request.getSession(true);
                httpSession.setAttribute("uname", getUname);
                if (!collectionExists(getUname + "DB", db)) {
                    db.createCollection(getUname + "DB", bObject);
                }
                out.print("true");

            } else {
                out.print("false");
            }

        }
    }

    // <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>

}