Model2 Architecture - (3) 로그인 :: 개발자로가는길

Model2 Architecture - (3) 로그인

2019. 8. 2. 15:43

[로그인 폼]

[로그인 성공 폼]

[실행화면]

1. 로그인 폼

1) WebContent - index.jsp 변경(로그인/로그아웃에 따른 메뉴 변경)

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@page import="model.ClientDTO"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>model2</title> </head> <body> <h3>Model2 Architecture</h3> <p>Model2 Controller(servlet)을 통해 Business로직과 view를 분리 </p> <img src="model2.gif"/> <h3>메뉴</h3> <p>Model2를 이용해 회원관리하고, 회원만 게시판을 이용할 수 있게함.</p>  <% ClientDTO clientDTO=(ClientDTO)session.getAttribute("clientDTO"); %> <table border="1"> <tr> <td rowspan="4">회원관리</td> <% if(clientDTO==null) {%> <td><a href="./register.jsp">회원등록</a></td> <% }else{ %> <td><%=clientDTO.getClientName() %>님 환영합니다.</td> <% } %> </tr> <tr> <td><a href="#">회원수정</a></td> </tr> <tr> <td><a href="#">회원삭제</a></td> </tr> <tr> <td><a href="./findClient.jsp">회원조회</a></td> </tr> <tr> <td rowspan="2">회원전용</td> <% if(clientDTO==null) {%> <td><a href="./login.jsp">로그인</a></td> <% }else{ %> <td><a href="#">로그아웃</a></td> <% } %> </tr> <tr> <td><a href="#">게시판</a></td> </tr> </table> </body> </html>

2) WebContent - login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>회원 로그인</title> </head> <body> <h3>회원 로그인</h3> <form method="post" action="DispatcherServlet"> <input type="hidden" name="command" value="login"> 아이디 <input type="text" name="clientId"> 패스워드 <input type="password" name="clientPassword"> <input type="submit" value="로그인"> </form> </body> </html>

3) WebContent - login_ok.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@page import="model.ClientDTO"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>로그인 성공</title> </head> <body> <% ClientDTO clientDTO=(ClientDTO)session.getAttribute("clientDTO"); %> <script> alert("<%=clientDTO.getClientName() %>"+"님 로그인에 성공하셨습니다."); location.href="http://localhost:8080/webstudy5-model2/"; </script> </body> </html>

4) WebContent - login_fail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("utf-8"); %> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>로그인 실패</title> </head> <body> <script> alert("아이디와 패스워드가 맞지 않아 로그인에 실패하셨습니다."); location.href="http://localhost:8080/webstudy5-model2/"; </script> </body> </html>

2. controller

1) src - controller.HandlerMapping.java에 login추가

else if(command.equals("login")) c=new LoginController();

2) src - controller.LoginController.java

package controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import model.ClientDAO; import model.ClientDTO; public class LoginController implements Controller { @Override public String execute(HttpServletRequest request, HttpServletResponse response) throws Exception { String clientId=request.getParameter("clientId"); String clientPassword=request.getParameter("clientPassword"); ClientDTO clientDTO=ClientDAO.getInstance().login(new ClientDTO(clientId,clientPassword,null,null,null,null)); String url =null; if(clientDTO!=null) { //로그인 성공시 HttpSession session=request.getSession(); session.setAttribute("clientDTO", clientDTO); url="login_ok.jsp"; }else { //로그인 실패시 url="login_fail.jsp"; } return "redirect:"+url; } }

3. model

1) src - model.ClientDAO.java에 login메소드 추가

public ClientDTO login(ClientDTO clientDTO) throws SQLException { ClientDTO resultDTO=null; Connection con=null; PreparedStatement pstmt=null; ResultSet rs=null; try { con=getConnection(); String sql="select clientId,clientName from client where clientId=? and clientPassword=?"; pstmt=con.prepareStatement(sql); pstmt.setString(1, clientDTO.getClientId()); pstmt.setString(2, clientDTO.getClientPassword()); rs=pstmt.executeQuery(); if(rs.next()) resultDTO=new ClientDTO(rs.getString(1), null, rs.getString(2), null, null, null); }finally { closeAll(rs, pstmt, con); } return resultDTO; }

'1.JAVA Web Programming > [3주차]JSP+model2' 카테고리의 다른 글

Model2 Architecture - (5) 회원수정 (0)	2019.08.03
Model2 Architecture - (4) 로그아웃 (0)	2019.08.03
Model2 Architecture - (2) 회원조회 (0)	2019.08.01
Model2 Architecture - (1) 회원가입 (0)	2019.08.01
Model2 Architecture - table생성, 홈화면(index,dispatcher 등), error페이지 (0)	2019.07.29

개발자로가는길

Model2 Architecture - (3) 로그인

'1.JAVA Web Programming > [3주차]JSP+model2' 카테고리의 다른 글

+ Recent posts

티스토리툴바