addLanguage

package cpFinal;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;

import javax.persistence.Id;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;

import org.apache.commons.io.FileUtils;
import org.bson.Document;

/**
 * Servlet implementation class addLanguage
 */
@MultipartConfig
public class addLanguage extends HttpServlet {

    private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public addLanguage() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        request.getRequestDispatcher("/addLanguage.jsp").forward(request, response);
    }
    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub

        String name = request.getParameter("LanguageName");
        request.setAttribute("add", "Success");
        if(DAO.isLanguageNameExiste(name) == 0) {

        Document user;
        long ID = DAO.getMaxDocument("AvailableLanguage") +1 ;
        user = new Document().append("_id", ID).append("name",name);
        mongodbConnection.getCollection("AvailableLanguage").insertOne(user);
        request.getRequestDispatcher("/addLanguage.jsp?add=success").forward(request, response);

        }
        else {
            response.setIntHeader("Refresh",0);
        }
    }
}