zallery/src/zall/page/LoginServlet.java

package zall.page;

import zall.ZalleryServlet;
import zall.bean.User;
import zall.manager.AuthenticationManager;
import zall.util.UserMessage;
import zutil.db.DBConnection;
import zutil.log.LogUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.SQLException;
import java.util.logging.Logger;

@WebServlet("/login")
public class LoginServlet extends ZalleryServlet {
    private static Logger logger = LogUtil.getLogger();

    private static final String JSP_FILE = "register.jsp";


    public void doGet(HttpServletRequest request, HttpServletResponse response, DBConnection db) throws ServletException, IOException {
        include(JSP_FILE, request, response);
    }


    public void doPost(HttpServletRequest request, HttpServletResponse response, DBConnection db) throws SQLException, ServletException, IOException {
        UserMessage msgs = UserMessage.getUserMessage(request.getSession());
        User user = AuthenticationManager.authenticate(db,
                request.getParameter("email"),
                request.getParameter("password"));

        // Successful login
        if (user != null) {
            user.registerOnHost(request, response, db, true );
            AuthenticationManager.setUserSession(user, request.getSession());

            forward("/", request, response);
        }
        // Failed login
        else {
            msgs.add(UserMessage.MessageType.ERROR, lang.getString("error.incorrect.user_or_pass"));
        }
    }
}