mypackage.CreateDB.java Source code

Introduction

Here is the source code for mypackage.CreateDB.java

Source

/*
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 * 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 com.mongodb.WriteResult;
import com.mongodb.bulk.WriteRequest;
import com.mongodb.client.MongoDatabase;
import java.io.IOException;
import java.io.PrintWriter;
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 CreateDB extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            String getDBName = request.getParameter("dbname");
            MongoClient mongoClient = new MongoClient("localhost", 27017);
            HttpSession httpSession = request.getSession(false);
            DB db = mongoClient.getDB("mydb");
            DBCollection dBCollection = db.getCollection(httpSession.getAttribute("uname") + "DB");
            BasicDBObject dBObject = new BasicDBObject();
            dBObject.put("kapil", getDBName);
            WriteResult writeResult = dBCollection.insert(dBObject);

            if (writeResult.getN() == 0) {
                out.print("true");
                MongoDatabase mongoDatabase = mongoClient.getDatabase(getDBName);
                mongoDatabase.createCollection("Welcome");
                mongoDatabase.drop();
            } 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>

}