Login.java

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 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;



/**
 *
 * @author sofiehamilton
 */
@WebServlet(urlPatterns = {"/LoginServlet"})
public class Login extends HttpServlet {


    Connection conn;
    Statement stmt;
    String email, password;
    String dburl = "jdbc:mysql://localhost:3306/oru?zeroDateTimeBehavior=convertToNull";
    String Username = "root";
    String PassWord = "";



    /**
     * 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()) {
            email = request.getParameter("txtusername");
            password = request.getParameter("txtpassword");


    Class.forName("com.mysql.jdbc.Driver");
    conn = DriverManager.getConnection(dburl, Username, PassWord);
    stmt = conn.createStatement();
    String query = "SELECT * FROM LARARE where EMAIL = '" + email + "' and PASSWORD = '" + password + "'";
    ResultSet rs = stmt.executeQuery(query);



    if(rs.next()){
        out.println("Login Sucessfully");
    }
    else {
           out.println("Fel användarnamn eller lösenord, försök igen");
           RequestDispatcher rd = request.getRequestDispatcher("index.html");
            rd.include(request, response);
           return;
            }

   response.sendRedirect("newhtml.html");


} catch (Exception ex) {
    Logger.getLogger(Login.class.getName()).log(Level.SEVERE, null, ex);
    ex.printStackTrace();
}
        }





    // <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>

}