JSP | 회원인증 프로그램

로그인.jsp

<%@ page language="java" contentType="text/html; charset=EUC-KR"
	pageEncoding="EUC-KR"%>
<!-- 유효한 멤버면 main.jsp로 이동/ null 이면 form으로 이동 -->
<%
if (session.getAttribute("ValidMem") != null) {
%>
<jsp:forward page="main.jsp"></jsp:forward>
<%
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
	<form action="loginOk.jsp" method="post">
		아이디 : <input type="text" name="id"
			value="
		<!-- session에 값이 있으면 -->
		<%if (session.getAttribute("id") != null)
	out.println(session.getAttribute("id"));%>">
		<br /> 비밀번호 : <input type="password" name="pw"><br /> <input
			type="submit" value="로그인"> &nbsp;&nbsp; <input type="button"
			value="회원가입" onclick="javascript:window.location='join.jsp'">
	</form>
</body>
</html>

회원가입

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
<script language="JavaScript" src="members.js" ></script>
</head>
<body>
	<form action="joinOk.jsp" method="post" name="reg_frm">
		아이디 : <input type="text" name="id" size="20"><br />
		비밀번호 : <input type="password" name="pw" size="20"><br />
		비밀번호 확인 : <input type="password" name="pw_check" size="20"><br />
		이름 : <input type="text" name="name" size="20"><br />
		메일 : <input type="text" name="eMail" size="20"><br />
		주소 : <input type="text" name="address" size="50"><br />
		<input type="button" value="회원가입" onclick="infoConfirm()">&nbsp;&nbsp;&nbsp; <input type="reset" value="취소" onclick="javascript:window.location='login.jsp'">
	</form>
</body>
</html>

회원가입 인증

<%@page import="java.sql.Timestamp"%>
<%@page import="com.javalec.ex.*"%>
<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<% request.setCharacterEncoding("EUC-KR"); %>

<!-- MemberDto 클래스를 자바빈으로 이용하겠다(DB에서 받은 값을 자바의 객체로) -->
<jsp:useBean id="dto" class="com.javalec.ex.MemberDto"/>
<!-- dto의 모든 property를 사용하겠다 -->
<jsp:setProperty name="dto" property="*" />
<%
		// 가입시간: 사용자가 아닌 서버에서 받기
		dto.setrDate(new Timestamp(System.currentTimeMillis()));
		MemberDao dao = MemberDao.getInstance();
		if(dao.confirmId(dto.getId()) == MemberDao.MEMBER_EXISTENT) {
%>
		<script language="javascript">
			alert("아이디가 이미 존재 합니다.");
			history.back();
		</script>
<%
		} else {
			int ri = dao.insertMember(dto);
			if(ri == MemberDao.MEMBER_JOIN_SUCCESS) {
				session.setAttribute("id", dto.getId());
%>
			<script language="javascript">
				alert("회원가입을 축하 합니다.");
				document.location.href="login.jsp";
			</script>
<%
			} else {
%>
			<script language="javascript">
				alert("회원가입에 실패했습니다.");
				document.location.href="login.jsp";
			</script>
<%
			}
		}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
	
</body>
</html>

회원 인증

코드를 입력하세요

메인

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<%
	if(session.getAttribute("ValidMem") == null) {
%>
	<<jsp:forward page="login.jsp" />
<%
	}

	String name = (String)session.getAttribute("name");
	String id = (String)session.getAttribute("id");
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>
	
	<h1><%= name %>님 안녕하세요.</h1> <br />
	<form action="logout.jsp" method="post">
		<input type="submit" value="로그아웃">&nbsp;&nbsp;&nbsp;<input type="button" value="정보수정" onclick="javascript:window.location='modify.jsp'">
	</form>

</body>
</html>

회원정보 수정

<%@page import="com.javalec.ex.MemberDto"%>
<%@page import="com.javalec.ex.MemberDao"%>
<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<% request.setCharacterEncoding("EUC-KR"); %>
<%
	//session에서 id를 가져오고 > Dao instance로 객체 생성 > DAO getmember를 dto(자바 객체)로 바꾸기
	String id = (String)session.getAttribute("id");
	MemberDao dao = MemberDao.getInstance();
	MemberDto dto = dao.getMember(id);
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
<script language="JavaScript" src="members.js" ></script>
</head>
<body>
	<form action="modifyOk.jsp" method="post" name="reg_frm">
		아이디 : <%= dto.getId() %><br />
		비밀번호 : <input type="password" name="pw" size="20"><br />
		비밀번호 확인 : <input type="password" name="pw_check" size="20"><br />
		이름 : <%= dto.getName() %><br />
		메일 : <input type="text" name="eMail" size="20" value="<%= dto.geteMail() %>"><br />
		주소 : <input type="text" name="address" size="50" value="<%= dto.getAddress() %>"><br />
		<input type="button" value="수정" onclick="updateInfoConfirm()">&nbsp;&nbsp;&nbsp; <input type="reset" value="취소" onclick="javascript:window.location='login.jsp'">
	</form>
</body>
</html>

회원정보 수정 완료

<%@page import="com.javalec.ex.MemberDao"%>
<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<% request.setCharacterEncoding("EUC-KR"); %>

<jsp:useBean id="dto" class="com.javalec.ex.MemberDto" scope="page" />
<jsp:setProperty name="dto" property="*" />

<%
	String id = (String)session.getAttribute("id");
	dto.setId(id);
	
	MemberDao dao = MemberDao.getInstance();
	int ri = dao.updateMember(dto);
	
	if(ri == 1) {
%>
	<script language="javascript">
		alert("정보수정 되었습니다.");
		document.location.href="main.jsp";
	</script>
<%
	} else {
%>
	<script language="javascript">
		alert("정보수정 실패 입니다.");
		history.go(-1);
	</script>
<%
	}
%>    
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>

</body>
</html>

로그아웃

<%@ page language="java" contentType="text/html; charset=EUC-KR"
    pageEncoding="EUC-KR"%>
<%
	session.invalidate();
	response.sendRedirect("login.jsp");
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=EUC-KR">
<title>Insert title here</title>
</head>
<body>

</body>
</html>

DAO

package com.javalec.ex;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;

// DB연결, CRUD 쿼리문
public class MemberDao {

	public static final int MEMBER_NONEXISTENT = 0;
	public static final int MEMBER_EXISTENT = 1;
	public static final int MEMBER_JOIN_FAIL = 0;
	public static final int MEMBER_JOIN_SUCCESS = 1;
	public static final int MEMBER_LOGIN_PW_NO_GOOD = 0;
	public static final int MEMBER_LOGIN_SUCCESS = 1;
	public static final int MEMBER_LOGIN_IS_NOT = -1;

	private static MemberDao instance = new MemberDao();

	// private여서 외부에서 객체 생성이 불가하다 > 그러므로 static getInstance()를 사용
	// private static MemberDao instance = new MemberDao(); 자기가 자기 클래스를 생성하는 메서드
	private MemberDao() {
	}

	public static MemberDao getInstance() {
		return instance;
	}

	public int insertMember(MemberDto dto) {
		int ri = 0;

		Connection connection = null;
		PreparedStatement pstmt = null;
		String query = "insert into members values (?,?,?,?,?,?)";

		try {
			connection = getConnection();
			pstmt = connection.prepareStatement(query);
			pstmt.setString(1, dto.getId());
			pstmt.setString(2, dto.getPw());
			pstmt.setString(3, dto.getName());
			pstmt.setString(4, dto.geteMail());
			pstmt.setTimestamp(5, dto.getrDate());
			pstmt.setString(6, dto.getAddress());
			pstmt.executeUpdate();
			ri = MemberDao.MEMBER_JOIN_SUCCESS;
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (pstmt != null)
					pstmt.close();
				if (connection != null)
					connection.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

		return ri;
	}

	// String id는 사용자가 입력한 값
	public int confirmId(String id) {
		int ri = 0;

		Connection connection = null;
		PreparedStatement pstmt = null;
		ResultSet set = null;
		String query = "select id from members where id = ?";

		try {
			connection = getConnection();
			pstmt = connection.prepareStatement(query);

			// 사용자 입력 id
			pstmt.setString(1, id);
			set = pstmt.executeQuery();
			if (set.next()) {

				// 1
				ri = MemberDao.MEMBER_EXISTENT;
			} else {

				// 0
				ri = MemberDao.MEMBER_NONEXISTENT;
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				set.close();
				pstmt.close();
				connection.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

		// 0 실패
		return ri;
	}

	// 회원이 맞는지
	public int userCheck(String id, String pw) {
		int ri = 0;
		String dbPw;

		Connection connection = null;
		PreparedStatement pstmt = null;
		ResultSet set = null;
		String query = "select pw from members where id = ?";

		try {
			connection = getConnection();
			pstmt = connection.prepareStatement(query);
			pstmt.setString(1, id);
			set = pstmt.executeQuery();

			if (set.next()) {
				// DB상의 pw
				dbPw = set.getString("pw");

				// db상과 사용자 입력값이 같다면
				if (dbPw.equals(pw)) {
					ri = MemberDao.MEMBER_LOGIN_SUCCESS; // ��� Ok
				} else {
					ri = MemberDao.MEMBER_LOGIN_PW_NO_GOOD; // ��� X
				}

				// 아예 데이타를 받지 못한 경우
			} else {
				ri = MemberDao.MEMBER_LOGIN_IS_NOT; // ȸ�� X
			}

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				set.close();
				pstmt.close();
				connection.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
		return ri;
	}

	public MemberDto getMember(String id) {
		Connection connection = null;
		PreparedStatement pstmt = null;
		ResultSet set = null;
		String query = "select * from members where id = ?";
		MemberDto dto = null;

		try {
			connection = getConnection();
			pstmt = connection.prepareStatement(query);
			pstmt.setString(1, id);
			set = pstmt.executeQuery();

			if (set.next()) {
				dto = new MemberDto();
				dto.setId(set.getString("id"));
				dto.setPw(set.getString("pw"));
				dto.setName(set.getString("name"));
				dto.seteMail(set.getString("eMail"));
				dto.setrDate(set.getTimestamp("rDate"));
				dto.setAddress(set.getString("address"));
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				set.close();
				pstmt.close();
				connection.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

		return dto;

	}

	public int updateMember(MemberDto dto) {
		int ri = 0;

		Connection connection = null;
		PreparedStatement pstmt = null;
		String query = "update members set pw=?, eMail=?, address=? where id=?";

		try {
			connection = getConnection();
			pstmt = connection.prepareStatement(query);
			pstmt.setString(1, dto.getPw());
			pstmt.setString(2, dto.geteMail());
			pstmt.setString(3, dto.getAddress());
			pstmt.setString(4, dto.getId());
			ri = pstmt.executeUpdate();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				pstmt.close();
				connection.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}

		return ri;
	}

	private Connection getConnection() {

		Context context = null;
		DataSource dataSource = null;
		Connection connection = null;
		try {
			context = new InitialContext();
			dataSource = (DataSource) context.lookup("java:comp/env/jdbc/Oracle11g");
			connection = dataSource.getConnection();
		} catch (Exception e) {
			e.printStackTrace();
		}

		return connection;
	}

}

DTO

package com.javalec.ex;

import java.sql.Timestamp;

public class MemberDto {

	private String id;
	private String pw;
	private String name;
	private String eMail;
	private Timestamp rDate;
	private String address;
	
//	public MemberDto(String id, String pw, String name, String eMail, Timestamp rDate, String address) {
//		this.id = id;
//		this.pw = pw;
//		this.name = name;
//		this.eMail = eMail;
//		this.rDate = rDate;
//		this.address = address;
//	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getPw() {
		return pw;
	}

	public void setPw(String pw) {
		this.pw = pw;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String geteMail() {
		return eMail;
	}

	public void seteMail(String eMail) {
		this.eMail = eMail;
	}

	public Timestamp getrDate() {
		return rDate;
	}

	public void setrDate(Timestamp rDate) {
		this.rDate = rDate;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}
	
}
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