Java Category/JSP

[JSP] JSP와 데이터베이스 연동

ReBugs 2023. 11. 27.

JDBC(Java DataBase Connectivity)

Java에서 DBMS의 종류와 관계없이 데이터베이스를 조작하기 위한
API(Application Programming Interface)를 의미
JDBC를 간단하게 요약하면 메소드 호출용 SQL 인터페이스라고 표현할 수 있음

JDBC 드라이버

다양한 DBMS 제조사들은 본사에서 개발한 DBMS를 Sun사의 Java 프로그램과연동할 수 있도록 기술을 지원하는 것을 의미
JDBC는 MySQL 설치과정에서 이미 설치하였으므로 따로 설치할 필요는 없지만 JDBC 드라이버가 어느 폴더에 저장되어 있는지에 대해서는 알고 있어야 함
JSP프로젝트 내에 lib폴더에 JDBC 드라이버를 추가해준다.

자세한 JDBC에 대한 내용은 아래의 포스트를 참고

2023.08.17 - [Java Category/Java] - [Java] JDBC 개요 및 DB 연결하기

[Java] JDBC 개요 및 DB 연결하기

이 게시글은 이것이 자바다(저자 : 신용권, 임경균)의 책과 동영상 강의를 참고하여 개인적으로 정리하는 글임을 알립니다. JDBC 자바는 데이터베이스와 연결해서 데이터 입출력 작업을 할 수 있

rebugs.tistory.com

예제 데이터베이스 기본 (MySQL)

JDBC 연결 테스트

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title> JDBC 커넥션 테스트 </title>
</head>
<body>
	<%
		// 1. 변수 4개 선언
		String driverName="com.mysql.jdbc.Driver"; //jdbc 드라이버 이름
		String url = "jdbc:mysql://localhost:3306/odbo"; //연결 문자열, 마지막은 데이터베이스 이름
		String username = "root"; //DB 계정 id
		String password = "0000"; //DB 계정 pw
		Connection conn = null; //Connection 객체를 null로 레퍼런스
		try{
			// 2. 드라이버 로딩	
			Class.forName(driverName);  //JDBC 드라이버 메모리에 로딩
			// 3. 연동
			conn = DriverManager.getConnection(url, username, password); //연결문자열, DB 계정을 Connection객체에 대입
			// 4. 여기까지 오류가 없다면 연결 성공
			out.println(">> 연결 성공 : " + conn);
		} catch(ClassNotFoundException e){
			out.println(">> 연결 실패 : 드라이버 복사 필요!");			
		} catch(SQLException e){
			out.println(">> 연결 실패 : SQL 명령문 확인 필요!");
		} finally{
			// 5. 닫기
			try{
				if(conn != null)
					conn.close();
			} catch(SQLException e){
				;
			}
		}
	%>
</body>
</html>

회원 가입

signup.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title> 회원 가입 </title>
</head>
<body>
	Home > Signup the Membership
	<hr>
	<form action="signup_process.jsp" name="user_info" method="post">
		<fieldset style="width:200px">
			<legend> 회원 가입 </legend><p>
	
			아이디 : <br>
			<input type="text" name="userID"><br><br>
		
			비밀번호 : <br> 
			<input type="password" name="userPW"><br><br>
			
			이메일 : <br>
			<input type="email" name="userMAIL"><br><br>		
			<hr>
			
		<div align="center">
			<input type="submit" value=" 가입하기 "> &nbsp;&nbsp;
			<input type="reset" value=" 다시작성 ">
		</div><br>
		</fieldset>
	</form>
</body>
</html>

signup_process.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<% 
	String u_id = request.getParameter("userID");
	String u_pw = request.getParameter("userPW");
	String u_mail = request.getParameter("userMAIL");
	
	//INSERT INTO members(id, passwd, email) VALUES( 'idData', 'passwdData', 'emailData' )
	String sql = "INSERT INTO members(id, passwd, email) VALUES";
	sql += "('" + u_id + "','" + u_pw + "','" + u_mail + "')";
	
	String driverName="com.mysql.jdbc.Driver"; //jdbc 드라이버 이름
	String url = "jdbc:mysql://localhost:3306/odbo"; //연결 문자열
	String username = "root"; //DB 계정 id
	String password = "0000"; //DB 계정 pw
	Connection conn = null; //Connection 객체를 null로 레퍼런스
	
	Class.forName(driverName); //JDBC 드라이버 메모리에 로딩
	//DriverManager의 정적 메소드인 getConnection는 Connection 객체를 리턴함
	conn = DriverManager.getConnection(url, username, password); //연결문자열, DB 계정, Connection객체 대입
	//Staement는 변경되지 않는 정적 SQL 문을 실행할 때 사용, 동적 SQL문은 PreparedStatement를 사용
	Statement sm = conn.createStatement(); //Statement 얻기
	
	int count = sm.executeUpdate(sql); //쿼리 실행
	if(count == 1){ //실행한 쿼리가 1개라면
		out.println("회원가입 성공!");
	}else{
		out.println("회원가입 실패!");
	}
	sm.close(); //Statement 끊기
	conn.close(); //Connection 끊기
%>

성공적으로 DB에 저장된 것을 확인할 수 있다.

회원 탈퇴

withdraw.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title> 회원 탈퇴 </title>
</head>
<body>
	Home > Withdraw the Membership
	<hr>
	<form action="withdraw_process.jsp" name="user_info" method="post">
		<fieldset style="width:200px">
			<legend> 회원 탈퇴 </legend><p>
	
			아이디 : <br>
			<input type="text" name="userID"><br>
			
		<div align="center">
			<input type="submit" value=" 탈퇴하기 "> &nbsp;&nbsp;
		</div><br>
		</fieldset>
	</form>
</body>
</html>

withdraw_process.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<% 
	String u_id = request.getParameter("userID");
	String sql = "DELETE FROM members WHERE id = ?"; //?에 넣어질 값은 PreparedStatement에서 처리
	
	String driverName="com.mysql.jdbc.Driver";
	String url = "jdbc:mysql://localhost:3306/odbo";
	String username = "root";
	String password = "0000";
	Connection conn = null;
	
	Class.forName(driverName);//메모리에 로딩
	conn = DriverManager.getConnection(url, username, password); //db에 연결
	
	PreparedStatement sm = conn.prepareStatement(sql); //sql 처리 준비
	sm.setString(1, u_id); //첫 번째 ?에 u_id를 대입

	int count = sm.executeUpdate(); //sql문을 처리하고 리턴되는 행의 수를 count에 저장
	
	if(count == 1){
		out.print("회원 탈퇴 성공!");
	}else{
		out.print("회원 탈퇴 실패!");
	}
	sm.close();
	conn.close();	
%>

성공적으로 DB에서 DELETE문이 이뤄진 것을 확인할 수 있다.

데이터베이스 예제 심화(Oracle SQL)

데이터베이스 구조

DTO (Data Transfer Object)

memberBean.java

public class MemberBean {
	private String id;
	private String pass1;
	private String email;
	private String tel;
	private String hobby;
	private String job;
	private String age;
	private String info;
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getPass1() {
		return pass1;
	}
	public void setPass1(String pass1) {
		this.pass1 = pass1;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getTel() {
		return tel;
	}
	public void setTel(String tel) {
		this.tel = tel;
	}
	public String getHobby() {
		return hobby;
	}
	public void setHobby(String hobby) {
		this.hobby = hobby;
	}
	public String getJob() {
		return job;
	}
	public void setJob(String job) {
		this.job = job;
	}
	public String getAge() {
		return age;
	}
	public void setAge(String age) {
		this.age = age;
	}
	public String getInfo() {
		return info;
	}
	public void setInfo(String info) {
		this.info = info;
	}
}

DAO (Data Access Object)

memberDAO.java

package model;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Vector;
public class MemberDAO
{
	String id = "java";
	String pass = "oracle";
	String url = "jdbc:oracle:thin:@localhost:1521/orcl";
	Connection conn = null;
	PreparedStatement pstmt = null;
	ResultSet rs; //DB의 테이블 결과를 리턴받아 저장하는 객체
	
	public void getCon()
	{
		 try{	
		    Class.forName("oracle.jdbc.OracleDriver");
	   		conn = DriverManager.getConnection(url, id, pass);
		}
		catch(Exception e) { e.printStackTrace(); }
	}
	
	public void insertMember(MemberBean mbean)
	{
		try
		{
			getCon();
	  		String SQL = "INSERT INTO member VALUES(?,?,?,?,?,?,?,?)";
			pstmt = conn.prepareStatement(SQL);
	  		pstmt.setString(1,mbean.getId());
	  		pstmt.setString(2,mbean.getPass1());
	  		pstmt.setString(3,mbean.getEmail());
	  		pstmt.setString(4,mbean.getTel());
	  		pstmt.setString(5,mbean.getHobby());
	  		pstmt.setString(6,mbean.getJob());
	  		pstmt.setString(7,mbean.getAge());
	  		pstmt.setString(8,mbean.getInfo());
	  		pstmt.executeUpdate();
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
	}
	
	public Vector<MemberBean> allSelectMember()
	{
		Vector<MemberBean> v = new Vector<>();
		try 
		{
			getCon();
			String SQL = "SELECT * FROM member";
			pstmt = conn.prepareStatement(SQL);
			rs = pstmt.executeQuery();
			
			while(rs.next())
			{
				MemberBean bean = new MemberBean();
				bean.setId(rs.getString(1));
				bean.setPass1(rs.getString(2));
				bean.setEmail(rs.getString(3));
				bean.setTel(rs.getString(4));
				bean.setHobby(rs.getString(5));
				bean.setJob(rs.getString(6));
				bean.setAge(rs.getString(7));
				bean.setInfo(rs.getString(8));
				v.add(bean);
			}
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
		return v;
	}
	
	public MemberBean oneSelectMember(String id)
	{
		MemberBean bean = new MemberBean();
		try 
		{
			getCon();
			String SQL = "SELECT * FROM member WHERE id=?";
			pstmt = conn.prepareStatement(SQL);
			pstmt.setString(1, id);
			rs = pstmt.executeQuery();
			if(rs.next())
			{
				bean.setId(rs.getString(1));
				bean.setPass1(rs.getString(2));
				bean.setEmail(rs.getString(3));
				bean.setTel(rs.getString(4));
				bean.setHobby(rs.getString(5));
				bean.setJob(rs.getString(6));
				bean.setAge(rs.getString(7));
				bean.setInfo(rs.getString(8));
			}
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
		return bean;
	}
	
	public String getPass(String id)
	{
		String pass="";
		try 
		{
			getCon();
			String SQL = "SELECT * FROM member WHERE id=?";
			pstmt = conn.prepareStatement(SQL);
			pstmt.setString(1, id);
			rs = pstmt.executeQuery();
			if(rs.next()) pass = rs.getString(2);
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
		return pass;
	}
	
	public void updateMember(MemberBean bean)
	{
		try 
		{
			getCon();
			String SQL = "UPDATE member SET email=?, tel=? WHERE id=?";
			pstmt = conn.prepareStatement(SQL);
			pstmt.setString(1, bean.getEmail());
			pstmt.setString(2, bean.getTel());
			pstmt.setString(3, bean.getId());
			pstmt.executeQuery();
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
	}
	
	public void deleteMember(String id)
	{
		try 
		{
			getCon();
			String SQL = "DELETE FROM member WHERE id=?";
			pstmt = conn.prepareStatement(SQL);
			pstmt.setString(1, id);
			pstmt.executeQuery();
		}
		catch(Exception e) { e.printStackTrace(); }
		finally { if(conn != null) { try { } catch (Exception e) { e.printStackTrace(); } } }
	}
}

MemberJoin.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<center>
		<h2>회원 가입</h2>
		<form action="MemberJoinProc.jsp">
			<table width="500" border="1">
				<tr height="50">
					<td width="150" align="center">아이디 </td>
					<td width="350" align="center">
						<input type="text" name="id" size="40" placeholder="id를 넣으세요">						
					</td>
				</tr>
		
				<tr height="50">
					<td width="150" align="center">패스워드</td>
					<td width="350" align="center">
						<input type="password" name="pass1" size="40"
						placeholder="비밀번호는 숫자와 영어만 넣어주세요">						
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">패스워드 확인</td>
					<td width="350" align="center">
						<input type="password" name="pass2" size="40">						
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">이메일</td>
					<td width="350" align="center">
						<input type="email" name="email" size="40">						
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">전화 번호 </td>
					<td width="350" align="center">
						<input type="tel" name="tel" size="40">				
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">당신의 관심 분야</td>
					<td width="350" align="center">
						<input type="checkbox" name="hobby" value="캠핑">캠핑&nbsp;
						<input type="checkbox" name="hobby" value="등산">등산&nbsp;
						<input type="checkbox" name="hobby" value="독서">독서&nbsp;
						<input type="checkbox" name="hobby" value="음악">음악&nbsp;				
					</td>
				</tr>
				
			   <tr height="50">
					<td width="150" align="center">당신의 직업은</td>
					<td width="350" align="center">
						<select name="job">
						<option value="교사">교사</option>
						<option value="의사">의사</option>
						<option value="변호사">변호사</option>
						<option value="기술사">기술사</option>
						</select>				
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">당신의 연령은</td>
					<td width="350" align="center">
						<input type="radio" name="age" value="10">10대&nbsp;
						<input type="radio" name="age" value="20">20대&nbsp;
						<input type="radio" name="age" value="30">30대&nbsp;
						<input type="radio" name="age" value="40">40대&nbsp;			
					</td>
				</tr>
				
				<tr height="50">
					<td width="150" align="center">하고 싶은말</td>
					<td width="350" align="center">
							<textarea rows="5" cols="40" name="info"></textarea>	
					</td>
				</tr>
					
				<tr height="50" align="center">
					<td width="150" colspan="2">
						<input type="submit" value="회원 가입">	
						<input type="reset" value="취소">			
					</td>
				</tr>	
			</table>
		</form>	
	</center>
</body>
</html>

MemberJoinProc.jsp

<%@page import="model.MemberDAO"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
	<%
		request.setCharacterEncoding("UTF-8");
		String hobby[] = request.getParameterValues("hobby");
		String textHobby = "";
		for(int i = 0; i < hobby.length; ++i) textHobby += hobby[i] + " ";
	%>
	<jsp:useBean id="mbean" class="model.MemberBean">
		<jsp:setProperty name="mbean" property="*"/>
	</jsp:useBean>
	<%
	mbean.setHobby(textHobby);
	MemberDAO mdao = new MemberDAO();
	mdao.insertMember(mbean);
	response.sendRedirect("MemberList.jsp");
	%>
</body>
</html>

MemberList.jsp

<%@page import="model.MemberBean" %>
<%@page import="model.MemberDAO" %>
<%@page import="java.util.Vector" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
	<%
		MemberDAO mdao = new MemberDAO();
		Vector<MemberBean> vec = mdao.allSelectMember();
	%>
	<center>
	<h2>모든 회원 정보</h2>
	<table width="800" border="1">
		<tr height="50">
			<td align="center" width="150">아이디</td>
			<td align="center" width="250">이메일</td>
			<td align="center" width="200">전화번호</td>
			<td align="center" width="200">취미</td>
		</tr>
		<%
			for(int i = 0; i < vec.size(); ++i)
			{
				MemberBean bean = vec.get(i);
		%>
		<tr height="50">
			<td align="center" width="150"><a href="MemberInfo.jsp?id=<%= bean.getId() %>"><%= bean.getId() %></a></td>
			<td align="center" width="250"><%= bean.getEmail() %></td>
			<td align="center" width="200"><%= bean.getTel() %></td>
			<td align="center" width="200"><%= bean.getHobby() %></td>
		</tr>
		<%}%>
	</table>
	</center>
</body>
</html>

MemberUpdateForm.jsp

<%@page import="model.MemberBean"%>
<%@page import="model.MemberDAO"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
<%
	String id = request.getParameter("id");
	MemberDAO mdao = new MemberDAO();
	MemberBean mbean = mdao.oneSelectMember(id);
%>
<center>
	<h2>회원 정보</h2>
		
		<table width="400" border="1">
			<form action="MemberUpdateProc.jsp" method="post">
			<tr height="50">
				<td align="center" width="150">아이디</td>
				<td width="250"><%= mbean.getId() %></td>
			</tr>
			<tr height="50">
				<td align="center" width="150">이메일</td>
				<td width="250"><input type="email" name="email" value="<%= mbean.getEmail() %>"></td>
			</tr>
			<tr height="50">
				<td align="center" width="150">전화</td>
				<td width="250"><input type="tel" name="tel" value="<%= mbean.getTel() %>"></td>
			</tr>
			<tr height="50">
				<td align="center" width="150">패스워드</td>
				<td width="250"><input type="password" name="pass1"></td>
			</tr>
			<tr height="50">
				<td align="center" colspan="2">
				<input type="hidden" name="id" value="<%= mbean.getId() %>">
				<input type="submit" value="회원 수정하기"> &nbsp;&nbsp;
			</form>
				<button onclick="location.href='MemberList.jsp'">회원 전체 보기</button>
				
			</td>
		</tr>
	</table>
</center>
</body>
</html>

MemberUpdateProc.jsp

<%@page import="model.MemberDAO"%>
<%@page import="model.MemberBean"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
	<%
		request.setCharacterEncoding("UTF-8");
	%>
	<jsp:useBean id="mbean" class="model.MemberBean">
		<jsp:setProperty name="mbean" property="*"/>
	</jsp:useBean>
	<%
		MemberDAO mdao = new MemberDAO();
		String pass = mdao.getPass(mbean.getId());
		if(mbean.getPass1().equals(pass))
		{
			mdao.updateMember(mbean);
			response.sendRedirect("MemberList.jsp");
		}
		else
		{
	%>
		<script type="text/javascript">
		alert("패스워드가 맞지 않습니다. 다시 확인해 주세요")
		history.go(-1);
		</script>
	<%
		}
	%>
</body>
</html>

MemberInfo.jsp

<%@page import="model.MemberBean" %>
<%@page import="model.MemberDAO" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
	<%
		String id = request.getParameter("id");
		MemberDAO mdao = new MemberDAO();
		MemberBean mbean = mdao.oneSelectMember(id);
	%>
	<center>
		<h2>회원 정보</h2>
			<table width="400" border="1">
				<tr height="50">
					<td align="center" width="150">아이디</td>
					<td width="250"><%= mbean.getId() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">이메일</td>
					<td width="250"><%= mbean.getEmail() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">전화</td>
					<td width="250"><%= mbean.getTel() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">취미</td>
					<td width="250"><%= mbean.getHobby() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">직업</td>
					<td width="250"><%= mbean.getJob() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">나이</td>
					<td width="250"><%= mbean.getAge() %></td>
				</tr>
				<tr height="50">
					<td align="center" width="150">정보</td>
					<td width="250"><%= mbean.getInfo() %></td>
				</tr>
				<tr height="50">
					<td align="center" colspan="2">
						<button onclick="location.href='MemberUpdateForm.jsp?id=<%=mbean.getId()%>'">회원수정</button>
						<button onclick="location.href='MemberDeleteForm.jsp?id=<%=mbean.getId()%>'">회원삭제</button>
						<button onclick="location.href='MemberList.jsp?id=<%=mbean.getId()%>'">목록보기</button>
						<button onclick="location.href='MemberJoin.jsp?id=<%=mbean.getId()%>'">회원가입</button>
					</td>
				</tr>
			</table>
	</center>
</body>
</html>

MemberDeleteForm.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
<center>
	<h2>회원 삭제 하기</h2>
		<table width="400" border="1">
			<form action="MemberDeleteProc.jsp" method="post">
			<tr height="50">
				<td align="center" width="150">아이디</td>
				<td width="250"><%= request.getParameter("id") %></td>
			</tr>
			<tr height="50">
				<td align="center" width="150">패스워드</td>
				<td width="250"><input type="password" name="pass1"></td>
			</tr>
			<tr height="50">
				<td align="center" colspan="2">
				<input type="hidden" name="id" value="<%= request.getParameter("id") %>">
				<input type="submit" value="회원 삭제하기"> &nbsp;&nbsp;
			</form>
				<button onclick="location.href='MemberList.jsp'">회원 전체 보기</button>
			</td>
		</tr>
	</table>
</center>
</body>
</html>

MemberDeleteProc.jsp

<%@page import="model.MemberDAO"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
	<%
		request.setCharacterEncoding("UTF-8");
	%>
	<jsp:useBean id="mbean" class="model.MemberBean">
		<jsp:setProperty name="mbean" property="*"/>
	</jsp:useBean>
	<%
		MemberDAO mdao = new MemberDAO();
		String pass = mdao.getPass(mbean.getId());
		if(mbean.getPass1().equals(pass))
		{
			mdao.deleteMember(mbean.getId());
			response.sendRedirect("MemberList.jsp");
		}
		else
		{
	%>
		<script type="text/javascript">
		alert("패스워드가 맞지 않습니다. 다시 확인해 주세요")
		history.go(-1);
		</script>
	<%
		}
	%>
</body>
</html>

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