로그아웃

<a class="dropdown-item" href="${ root }/users/logout">로그아웃</a>

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ include file="/layout/common.jsp" %> <nav class="navbar bg-dark navbar-expand-lg bg-body-tertiary" data-bs-theme="dark"> <div class="container-fluid"> <a class="navbar-brand" href="${ root }/">Home</a> <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="collapse navbar-collapse" id="navbarSupportedContent"> <ul class="navbar-nav me-auto mb-2 mb-lg-0"> <li class="nav-item"> <a class="nav-link active" aria-current="page" href="${ root }/board/list">Board</a> </li> </ul> <ul class="navbar-nav d-flex align-items-center px-3"> <% if( loginId == null || loginId.equals("") ) { %> <!-- 비로그인 시 --> <li class="nav-item"> <a class="nav-link" aria-current="page" href="${ root }/login.jsp">로그인</a> </li> <li class="nav-item"> <a class="nav-link" aria-current="page" href="${ root }/join.jsp">회원가입</a> </li> <li class="nav-item"> </li> <% } else { %> <!-- 로그인 시 --> <li class="nav-item"> <div class="dropdown"> <a href="#" class="d-flex align-items-center link-body-emphasis text-decoration-none dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false"> <img src="https://i.imgur.com/fzADqJo.jpg" alt="" width="32" height="32" class="rounded-circle me-2"> <strong>${ loginId }</strong> </a> <ul class="dropdown-menu dropdown-menu-end text-small shadow"> <li><a class="dropdown-item" href="${ root }/users/my">마이 페이지</a></li> <li><a class="dropdown-item" href="${ root }/users/update">회원정보 수정</a></li> <li><hr class="dropdown-divider"></li> <li><a class="dropdown-item" href="${ root }/users/logout">로그아웃</a></li> </ul> </div> </li> <% } %> </ul> </div> </div> </nav>

// /logout - 로그아웃 if( path.equals("/logout") ) { System.out.println("로그아웃..."); HttpSession session = request.getSession(); session.invalidate(); response.sendRedirect(root + "/"); }

package board.servlet; import jakarta.servlet.ServletException; import jakarta.servlet.annotation.WebServlet; import jakarta.servlet.http.HttpServlet; import jakarta.servlet.http.HttpServletRequest; import jakarta.servlet.http.HttpServletResponse; import jakarta.servlet.http.HttpSession; import java.io.IOException; import java.util.UUID; import board.DTO.Users; import board.Service.UserService; import board.Service.UserServiceImpl; @WebServlet("/users/*") public class UserServlet extends HttpServlet { private static final long serialVersionUID = 1L; private UserService userService = new UserServiceImpl(); /** * [GET] */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // url : /users/idCheck String root = request.getContextPath(); String path = request.getPathInfo(); // /idCheck // /idCheck - 아이디 중복 확인 if( path.equals("/idCheck") ) { System.out.println("아이디 중복 확인..."); String username = request.getParameter("username"); boolean check = userService.idCheck(username); response.getWriter().print(check); } // /logout - 로그아웃 if( path.equals("/logout") ) { System.out.println("로그아웃..."); HttpSession session = request.getSession(); session.invalidate(); response.sendRedirect(root + "/"); } } /** * [POST] */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String root = request.getContextPath(); // /Board String path = request.getPathInfo(); // /idCheck // /join - 회원가입 if( path.equals("/join") ) { System.out.println("회원가입 요청 처리..."); String username = request.getParameter("username"); String password = request.getParameter("password"); String name = request.getParameter("name"); String email = request.getParameter("email"); Users user = Users.builder() .id( UUID.randomUUID().toString() ) .username(username) .password(password) .name(name) .email(email) .build(); int result = userService.join(user); // 회원가입 성공 if( result > 0 ) { response.sendRedirect(root + "/"); } // 회원가입 실패 else { response.sendRedirect(root + "/join.jsp?error=true"); } } // /login - 로그인 if( path.equals("/login") ) { String username = request.getParameter("username"); String password = request.getParameter("password"); Users user = Users.builder() .username(username) .password(password) .build(); boolean result = userService.login(user); // 로그인 성공 if( result ) { // 회원 조회 Users loginUser = userService.selectByUsername(username); loginUser.setPassword(null); // 세션에 사용자 정보 등록 HttpSession session = request.getSession(); session.setAttribute("loginId", user.getUsername()); session.setAttribute("loginUser", loginUser); response.sendRedirect(root + "/"); } // 로그인 실패 else { response.sendRedirect(root + "/login.jsp?error=true"); } } } }