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Commit 1761ca8

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Added Authentication folder in the MVCPracticeAdvanced section of a small course on Java EE
1 parent 71265ae commit 1761ca8

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3 files changed

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package Authentication;
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import AirportSimulatorTwo.DTO.ReadUserDto;
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import AirportSimulatorTwo.Service.UserService;
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import AirportSimulatorTwo.Util.JspPathHelper;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.annotation.WebServlet;
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import jakarta.servlet.http.HttpServlet;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.SneakyThrows;
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import java.io.IOException;
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@WebServlet("/login")
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public class LogInServlet extends HttpServlet {
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/* Вызываем UserService, чтобы использовать его методы */
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private final UserService userService = UserService.getInstance();
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/* Перенаправляем GET запрос от пользователя на login.jsp */
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@Override
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protected void doGet(HttpServletRequest req,
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HttpServletResponse resp)
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throws ServletException, IOException {
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req.getRequestDispatcher(JspPathHelper.getJspPath("login")).forward(req, resp);
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}
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/* Обрабатываем полученный POST запрос */
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@Override
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protected void doPost(HttpServletRequest req,
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HttpServletResponse resp)
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throws ServletException, IOException {
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/* Получаем из запроса параметры email и password */
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String enterEmail = req.getParameter("email");
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String enterPassword = req.getParameter("password");
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/* Обрабатываем полученные данные в методе *.login класса UserService */
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userService.login(enterEmail, enterPassword).
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ifPresentOrElse(
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user -> onLoginSuccess(user, req, resp), // Если пользователь в базе есть, то...
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() -> onLoginFail(req, resp) // Если пользователя в базе нет, то...
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);
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}
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/* Метод обрабатывает случай когда пользователя с введенными параметрами в базе нет */
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@SneakyThrows
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private void onLoginFail(HttpServletRequest req,
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HttpServletResponse resp){
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/*
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Перенаправляем на сервлет с URL /login с параметрами
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'?error&email=" + req.getParameter("email")'
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*/
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resp.sendRedirect("/login?error&email=" + req.getParameter("email"));
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}
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/* Метод обрабатывает случай когда пользователь с введенными параметрами в базе есть */
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@SneakyThrows
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private void onLoginSuccess(ReadUserDto user,
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HttpServletRequest req,
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HttpServletResponse resp) {
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req.getSession().setAttribute("user", user);
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resp.sendRedirect("/flights");
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}
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}
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package Authentication;
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import AirportSimulatorTwo.DTO.ReadUserDto;
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import AirportSimulatorTwo.Service.UserService;
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import AirportSimulatorTwo.Util.JspPathHelper;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.annotation.WebServlet;
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import jakarta.servlet.http.HttpServlet;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.SneakyThrows;
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import java.io.IOException;
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@WebServlet("/international_login")
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public class LogInServletWithLocal extends HttpServlet {
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private final UserService userService = UserService.getInstance();
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@Override
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protected void doGet(HttpServletRequest req,
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HttpServletResponse resp)
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throws ServletException, IOException {
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req.getRequestDispatcher(JspPathHelper.getJspPath("international_login")).forward(req, resp);
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}
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@Override
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protected void doPost(HttpServletRequest req,
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HttpServletResponse resp)
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throws ServletException, IOException {
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String enterEmail = req.getParameter("email");
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String enterPassword = req.getParameter("password");
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userService.login(enterEmail, enterPassword).
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ifPresentOrElse(
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user -> onLoginSuccess(user, req, resp),
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() -> onLoginFail(req, resp)
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);
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}
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@SneakyThrows
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private void onLoginFail(HttpServletRequest req,
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HttpServletResponse resp){
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resp.sendRedirect("/international_login?error&email=" + req.getParameter("email"));
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}
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@SneakyThrows
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private void onLoginSuccess(ReadUserDto user,
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HttpServletRequest req,
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HttpServletResponse resp) {
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req.getSession().setAttribute("user", user);
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resp.sendRedirect("/flights");
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}
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}
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package Authentication;
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import jakarta.servlet.ServletException;
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import jakarta.servlet.annotation.WebServlet;
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import jakarta.servlet.http.HttpServlet;
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import jakarta.servlet.http.HttpServletRequest;
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import jakarta.servlet.http.HttpServletResponse;
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import java.io.IOException;
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@WebServlet("/logout")
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public class LogOutServlet extends HttpServlet {
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@Override
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protected void doPost(HttpServletRequest req,
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HttpServletResponse resp) throws ServletException, IOException {
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req.getSession().invalidate();
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resp.sendRedirect("/login");
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}
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}

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