Untitled

uniid - 18357593
name - Jared Hoight
password - password
email - jhall@students.monash.edu.au

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 javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;

/**
 * Servlet implementation class LoginServlet
 */
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

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

    private void sendLoginForm(HttpServletResponse response,
              boolean withErrorMessage)
              throws ServletException, IOException {

              response.setContentType("text/html");
              PrintWriter out = response.getWriter();
              out.println("<HTML>");
              out.println("<HEAD>");
              out.println("<TITLE>Login</TITLE>");
              out.println("</HEAD>");
              out.println("<BODY>");
              out.println("<CENTER>");

              if (withErrorMessage)
                out.println("Login failed. Please try again.<BR>");

              out.println("<BR>");
              out.println("<BR><H2>Login Page</H2>");
              out.println("<BR>");
              out.println("<BR>Please enter your user name and password.");
              out.println("<BR>");
              out.println("<BR><FORM METHOD=POST>");
              out.println("<TABLE>");
              out.println("<TR>");
              out.println("<TD>User Name:</TD>");
              out.println("<TD><INPUT TYPE=TEXT NAME=uniid></TD>");
              out.println("</TR>");
              out.println("<TR>");
              out.println("<TD>Password:</TD>");
              out.println("<TD><INPUT TYPE=PASSWORD NAME=password></TD>");
              out.println("</TR>");
              out.println("<TR>");
              out.println("<TD ALIGN=RIGHT COLSPAN=2>");
              out.println("<INPUT TYPE=SUBMIT VALUE=Login></TD>");
              out.println("</TR>");
              out.println("</TABLE>");
              out.println("</FORM>");
              out.println("</CENTER>");
              out.println("</BODY>");
              out.println("</HTML>");
            }


    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        sendLoginForm(response, false);

    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    public void doPost(HttpServletRequest request,
              HttpServletResponse response)
              throws ServletException, IOException {
                String uniid = request.getParameter("uniid");
                String password = request.getParameter("password");
                if (login(uniid, password)) {
                  RequestDispatcher rd =
                    request.getRequestDispatcher("AnotherServlet");
                  rd.forward(request, response);
                }
                else {
                  sendLoginForm(response, true);
                }

    }

     boolean login(String uniid, String password) {
            try {
              Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
              Connection con =
                DriverManager.getConnection("jdbc:mysql://localhost:3306/wae","root","");
              System.out.println("got connection");

              Statement s = con.createStatement();
              String sql = "SELECT uniid FROM user" +
                " WHERE uniid='" + uniid + "'" +
                " AND password='" + password + "'";
              ResultSet rs = s.executeQuery(sql);
              if (rs.next()) {
                rs.close();
                s.close();
                con.close();
                return true;
              }
                rs.close();
                s.close();
                con.close();
            }
            catch (ClassNotFoundException e) {
              System.out.println(e.toString());
            }
            catch (SQLException e) {
              System.out.println(e.toString());
            }
            catch (Exception e) {
              System.out.println(e.toString());
            }
            return false;
          }
        }

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Class.forName("com.mysql.jdbc.Driver");