JSP & Servlet 게시판 구현하기(암호 변경)

지난번에 로그아웃 기능을 구현 하였다.

https://nullgoyatten.tistory.com/20

JSP & Servlet 게시판 구현하기(로그아웃)

그렇다면 이번에는 암호 변경 기능을 이어서 구현해보자.

 

1. Member 클래스 코드 추가

추가할 코드 : 

	public void changePassword(String newPwd) {
		this.password = newPwd;
	}

추가된 전체 코드 : 

package member.model;

import java.util.Date;

public class Member {
	
	private String id;
	private String name;
	private String password;
	private Date regDate;
	
	public Member(String id, String name, String password, Date regDate) {
		this.id = id;
		this.name = name;
		this.password = password;
		this.regDate = regDate;
	}
	
	public String getId() {
		return id;
	}
	
	public String getName() {
		return name;
	}
	
	public String getPassword() {
		return password;
	}
	
	public Date getRegDate() {
		return regDate;
	}
	
	public boolean matchPassword(String pwd) {
		return password.equals(pwd);
	}
	
	public void changePassword(String newPwd) {
		this.password = newPwd;
	}
	
}

2. MemberDao 클래스 코드 추가

추가할 코드 : 

	public void update(Connection conn, Member member) throws SQLException {
		try (PreparedStatement pstmt = conn.prepareStatement(
				"update member set name = ?, password = ? where memberid = ?")) {
			pstmt.setString(1, member.getName());
			pstmt.setString(2, member.getPassword());
			pstmt.setString(3, member.getId());
			pstmt.executeUpdate();
		}
	}

추가된 전체 코드 : 

package member.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.Date;

import jdbc.JdbcUtil;
import member.model.Member;

public class MemberDao {

	public Member selectById(Connection conn, String id) throws SQLException {
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		try {
			pstmt = conn.prepareStatement(
					"select * from member where memberid = ?");
			pstmt.setString(1, id);
			rs = pstmt.executeQuery();
			Member member = null;
			if (rs.next()) {
				member = new Member(
						rs.getString("memberid"), 
						rs.getString("name"), 
						rs.getString("password"),
						toDate(rs.getTimestamp("regdate")));
			}
			return member;
		} finally {
			JdbcUtil.close(rs);
			JdbcUtil.close(pstmt);
		}
	}

	private Date toDate(Timestamp date) {
		return date == null ? null : new Date(date.getTime());
	}

	public void insert(Connection conn, Member mem) throws SQLException {
		try (PreparedStatement pstmt = 
				conn.prepareStatement("insert into member values(?,?,?,?)")) {
			pstmt.setString(1, mem.getId());
			pstmt.setString(2, mem.getName());
			pstmt.setString(3, mem.getPassword());
			pstmt.setTimestamp(4, new Timestamp(mem.getRegDate().getTime()));
			pstmt.executeUpdate();
		}
	}
	
	public void update(Connection conn, Member member) throws SQLException {
		try (PreparedStatement pstmt = conn.prepareStatement(
				"update member set name = ?, password = ? where memberid = ?")) {
			pstmt.setString(1, member.getName());
			pstmt.setString(2, member.getPassword());
			pstmt.setString(3, member.getId());
			pstmt.executeUpdate();
		}
	}
}

3. MemberNotFoundException 작성 (암호를 변경할 회원 데이터가 존재하지 않는 경우)

경로 : member.service > MemberNotFoundException.java

package member.service;

public class MemberNotFoundException extends RuntimeException {

}

4. InvalidPasswordException 작성 (현재 암호가 일치하지 않는 경우)

경로 : member.service > InvalidPasswordException.java

package member.service;

public class InvalidPasswordException extends RuntimeException {

}

5. ChangePasswordService 작성

경로 : member.service > ChangePasswordService.java

package member.service;

import java.sql.Connection;
import java.sql.SQLException;

import jdbc.JdbcUtil;
import jdbc.connection.ConnectionProvider;
import member.dao.MemberDao;
import member.model.Member;

public class ChangePasswordService {

	private MemberDao memberDao = new MemberDao();
	
	public void changePassword(String userId, String curPwd, String newPwd) {
		Connection conn = null;
		try {
			conn = ConnectionProvider.getConnection();
			conn.setAutoCommit(false);
			
			Member member = memberDao.selectById(conn, userId);
			if (member == null) {
				throw new MemberNotFoundException();
			}
			if (!member.matchPassword(curPwd)) {
				throw new InvalidPasswordException();
			}
			member.changePassword(newPwd);
			memberDao.update(conn, member);
			conn.commit();
		} catch (SQLException e) {
			JdbcUtil.rollback(conn);
			throw new RuntimeException(e);
		} finally {
			JdbcUtil.close(conn);
		}
	}
}

6. ChangePasswordHandler 작성

경로 : member.command > ChangePasswordHandler.java

package member.command;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import auth.service.User;
import member.service.ChangePasswordService;
import member.service.InvalidPasswordException;
import member.service.MemberNotFoundException;
import mvc.command.CommandHandler;

public class ChangePasswordHandler implements CommandHandler {
	private static final String FORM_VIEW = "/WEB-INF/view/changePwdForm.jsp";
	private ChangePasswordService changePwdSvc = new ChangePasswordService();
	
	@Override
	public String process(HttpServletRequest req, HttpServletResponse res) 
	throws Exception {
		if (req.getMethod().equalsIgnoreCase("GET")) {
			return processForm(req, res);
		} else if (req.getMethod().equalsIgnoreCase("POST")) {
			return processSubmit(req, res);
		} else {
			res.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
			return null;
		}
	}

	private String processForm(HttpServletRequest req, HttpServletResponse res) {
		return FORM_VIEW;
	}


	private String processSubmit(HttpServletRequest req, HttpServletResponse res)
	throws Exception {
		User user = (User)req.getSession().getAttribute("authUser");
			
		Map<String, Boolean> errors = new HashMap<>();
		req.setAttribute("errors", errors);

		String curPwd = req.getParameter("curPwd");
		String newPwd = req.getParameter("newPwd");
		
		if (curPwd == null || curPwd.isEmpty()) {
			errors.put("curPwd", Boolean.TRUE);
		}
		if (curPwd == null || curPwd.isEmpty()) {
			errors.put("newPwd", Boolean.TRUE);
		}
		if (!errors.isEmpty()) {
			return FORM_VIEW;
		}
		
		try {
			changePwdSvc.changePassword(user.getId(), curPwd, newPwd);
			return "/WEB-INF/view/changePwdSuccess.jsp";
		} catch (InvalidPasswordException e) {
			errors.put("badCurPwd", Boolean.TRUE);
			return FORM_VIEW;
		} catch (MemberNotFoundException e) {
			res.sendError(HttpServletResponse.SC_BAD_REQUEST);
			return null;
		}
	}

}

 

7. commandHandlerURI.properties 수정. ChangePasswordHandler가 /changePwd.do 요청을 처리하도록 매핑 설정에 추가한다. 

/join.do=member.command.JoinHandler
/login.do=auth.command.LoginHandler
/logout.do=auth.command.LogoutHandler
/changePwd.do=member.command.ChangePasswordHandler

8. changePwdForm.jsp 작성

경로 : WebContent > WEB-INF > view > changePwdForm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>암호 변경</title>
</head>
<body>
<form action="changePwd.do" method="post">
<p>
	현재 암호:<br/><input type="password" name="curPwd">
	<c:if test="${errors.curPwd}">현재 암호를 입력하세요.</c:if>
	<c:if test="${errors.badCurPwd}">현재 암호가 일치하지 않습니다.</c:if>
</p>
<p>
	새 암호:<br/><input type="password" name="newPwd">
	<c:if test="${errors.newPwd}">새 암호를 입력하세요.</c:if>
</p>
<input type="submit" value="암호 변경">
</form>
</body>
</html>

 

 

9. changePwdSuccess.jsp 작성

경로 : WebContent > WEB-INF > view > changePwdSuccess.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>암호 변경</title>
</head>
<body>

암호를 변경했습니다.

</body>
</html>

 

 

 

10. 테스트

현재 암호와 새 암호가 다른경우 일치하지 않는다는 내용이 나온다.

잘된다.

다음글 : 게시글 쓰기 구현

https://nullgoyatten.tistory.com/22