geriapp.servlets.BootstrapServlet.java Source code

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Here is the source code for geriapp.servlets.BootstrapServlet.java
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/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package geriapp.servlets;

import com.mongodb.MongoClient;
import com.mongodb.MongoException;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import geriapp.controller.BootstrapController;
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;

/**
 *
 * @author muhammadims.2013
 */
public class BootstrapServlet 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 {
        response.setContentType("text/html;charset=UTF-8");
        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 BootstrapServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet BootstrapServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <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 {
        response.setContentType("text/html;charset=UTF-8");
        String pathToFile = request.getParameter("pathToFile");
        String dbName = request.getParameter("dbName");
        String collectionName = request.getParameter("collectionName");
        String output = storeInDatabase(pathToFile, dbName, collectionName);
        request.setAttribute("output", output);
        request.getRequestDispatcher("/bootstrap-result.jsp").forward(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private String storeInDatabase(String pathToFile, String dbName, String collectionName) {
        String output;
        try {
            MongoClient mongo = new MongoClient("localhost", 27017);
            MongoDatabase db = mongo.getDatabase(dbName);

            output = BootstrapController.importJSONFileToDB(pathToFile, db, collectionName);

        } catch (Exception e) {
            return "Database connection error";
        }
        return output;
    }
}