[개인실습] JSP로 회원형 게시판 만들기

Web/JSP

2020. 10. 19. 10:03

# 게시판 구현

- dbConn.jsp

<%@page import="java.sql.PreparedStatement"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.sql.SQLException" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<%
	String driver = "com.mysql.cj.jdbc.Driver";
	String url = "jdbc:mysql://localhost:3306/project?useSSL=false&serverTimezone=UTC";
	String user = "root";
	String password = "1234";
	Connection conn = null;
	PreparedStatement pstmt = null;
	ResultSet rs = null;
	
	try{
		Class.forName(driver);
		conn = DriverManager.getConnection(url, user, password);
	} catch(Exception e) {
		e.printStackTrace();
	}
%>
</body>
</html>

- index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>게시판</title>
</head>
<body>
<% 
	String id = request.getParameter("id");
	if(id != null){
%>		
	}
	<table>
		<caption>회원게시판</caption>
		<tr>
			<td>번호</td>
			<td>제목</td>
			<td>작성자</td>
			<td>작성일</td>
			<td>조회수</td>	
		</tr>
<% 
	String sql = "select * from board";
	pstmt = conn.prepareStatement(sql);
	rs = pstmt.executeQuery();
	int no = 0, rCnt = 0;
	String name = null, title = null, contents = null, wTime = null;
	
	while(rs.next()){
		no = rs.getInt("no");
		name = rs.getString("name");
		title = rs.getString("title");
		contents = rs.getString("contents");
		wTime = rs.getString("wTime");
		rCnt = rs.getInt("rCnt");
%>
		<tr>
			<td><%= no %></td>
			<td><a href="writeContents.jsp?no=<%= no %>"><%=title %></a></td>
			<td><%= name %></td>
			<td><%= wTime %></td>
			<td><%= rCnt %></td>
		</tr>
<% 				
	}
%>	
	</table>
	<a href="write.jsp"><input type="button" value="글쓰기"></a>
<%	
	}
%>
</body>
</html>

- write.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<form method="post" action="writeResult.jsp">
		<table>
			<caption>글쓰기</caption>
			<tr>
				<td>제목</td>
				<td><input type="text" name="tltle"></td>
			</tr>
			<tr>
				<td>이름</td>
				<td><input type="text" name="name"></td>
			</tr>
			<tr>
				<td>비밀번호</td>
				<td><input type="password" name="pw"></td>
			</tr>
			<tr>
				<td>e-mail</td>
				<td><input type="email" name="email"></td>
			</tr>
			<tr>
				<td colspan="2">
					<textarea name="contents" rows="8" cols="40"></textarea>
				</td>
			</tr>
			<tr>
				<td colspan="2">
					<input type="submit" value="등록">
					<a href="index.jsp"><input type="button" value="목록"></a>
				</td>
			</tr>
		</table>
	</form>
</body>
</html>

- writeResult.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	request.setCharacterEncoding("UTF-8");
	String title = request.getParameter("title");
	String name = request.getParameter("name");
	String pw = request.getParameter("pw");
	String email = request.getParameter("email");
	String contents = request.getParameter("contents");
	
	String sql = "insert into board(title, name, pw, email, contents) values(?,?,?,?,?)";
	pstmt = conn.prepareStatement(sql);
	pstmt.setString(1, title);
	pstmt.setString(2, name);
	pstmt.setString(3, pw);
	pstmt.setString(4, email);
	pstmt.setString(5, contents);
	
	int result = 0;
	result = pstmt.executeUpdate();
	if(result > 0){		
		response.sendRedirect("index.jsp");		
	} else{
		response.sendRedirect("error.jsp");
	}
%>	
</body>
</html>

- writeContents.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	String no = request.getParameter("no");
	String sql = "select * from board where = ?";
	pstmt = conn.prepareStatement(sql);
	pstmt.setString(1, no);
	rs = pstmt.executeQuery();
	
	String sql2 = "update board set rCnt = rCnt+1 where no =?";
	PreparedStatement pstmt2 = conn.prepareStatement(sql2);
	pstmt2.setString(1, no);
	pstmt2.executeUpdate(); 
	
	if(rs.next()){
%>
	<table>
		<caption>게시물 내용보기</caption>
		<tr>
			<td>제목</td>
			<td><input type="text" name="title" value="<%= rs.getString("title") %>" readonly></td>
		</tr>
		<tr>
			<td>이름</td>
			<td><input type="text" name="name" value="<%= rs.getString("name") %>" readonly></td>
		</tr>
		<tr>
			<td>작성일</td>
			<td><input type="text" name="wTime" value="<%= rs.getString("wTime") %>" readonly></td>
		</tr>
		<tr>
			<td colspan="2">
				<textarea rows="8" cols="40" readonly><%= rs.getString("contents") %></textarea>
			</td>
		</tr>
	</table>	
<%		
	}
%>
<a href = "index.jsp"><input type="button" value="목록"></a>
<a href = "updatePw.jsp?no=<%= no %>"><input type="button" value="수정"></a>
<a href = "delete.jsp?no=<%= no %>"><input type="button" value="삭제"></a>
</body>
</html>

- updatePw.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<% 
	String no = request.getParameter("no");
%>
	<form method="post" action="update.jsp">
		<input type="hidden" name="no" value="<%= no %>">
		<table>
			<tr>
				<td>비밀번호</td>
				<td><input type="password" name="pw"></td>
			</tr>
			<tr>
				<td><input type="submit" value="확인"></td>
			</tr>
		</table>
	</form>	
</body>
</html>

- update.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>        
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<% 
	String no = request.getParameter("no");
	String pw = request.getParameter("pw");
	String sql = "select * from board where no = ?";
	pstmt = conn.prepareStatement(sql);
	pstmt.setString(1, no);
	rs = pstmt.executeQuery();
	
	while(rs.next()){
		if(!pw.equals(rs.getString("pw"))){
%>
			<script>
				alert("비밀번호가 다릅니다.");
			</script>	
			<a href="index.jsp">목록</a>
<%					
		} else {
%>			
			<form method="post" action="updateResult.jsp"></form>
			<input type="hidden" name="no" value="<%= no%>">
			<table>
				<caption>게시물 수정하기</caption>
				<tr>
					<td>제목</td>
					<td><input type="text" name="title"
						value="<%= rs.getString("title") %>" ></td>
				</tr>
				<tr>
					<td>이름</td>
					<td><input type="text" name="name"
						value="<%= rs.getString("name") %>" ></td>
				</tr>
				<tr>
					<td>작성일</td>
					<td><input type="text" name="wTime"
						value="<%= rs.getString("wTime") %>"></td>
				</tr>
				<tr>
					<td colspan="2"><textarea rows="8" cols="40" name="contents"><%= rs.getString("contents") %></textarea>
					</td>
				</tr>
				<tr>
					<td colspan="2"><input type="submit" value="등록"> <a
						href="index.jsp"><input type="button" value="목록"></a>
				</tr>
			</table>
			</form>
<%			
		} 
	} 
%>
</body>
</html>

- updateResult.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	String no = request.getParameter("no");
	String title = request.getParameter("title");
	String name = request.getParameter("name");
	String contents = request.getParameter("contents");
	
	String sql = "update board set title= ?, name=?, contents=? where no=?";
	pstmt = conn.prepareStatement(sql);
	pstmt.setString(1, title);
	pstmt.setString(2, name);
	pstmt.setString(3, contents);
	pstmt.setString(4, no);
	
	int result = 0;
	result = pstmt.executeUpdate();
	if(result > 0){		
		response.sendRedirect("index.jsp");		
	} else{
		response.sendRedirect("error.jsp");
	}
%>	
</body>
</html>

- delete.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@include file="dbConn.jsp" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
	String no = request.getParameter("no");	
	String sql = "delete from board where no =?";
	pstmt = conn.prepareStatement(sql);
	pstmt.setString(1, no);
	
	int result = 0;
	result = pstmt.executeUpdate();
	if(result > 0){		
		response.sendRedirect("index.jsp");		
	} else{
		response.sendRedirect("error.jsp");
	} 
%>	
</body>
</html>

-error.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>
	<p>에러가 발생했습니다.</p>
	<a href = "index.jsp">목록으로 돌아가기</a>
</body>
</html>

 

# 회원제 구현

- loginMain.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>
<%
	String id = (String)session.getAttribute("id");
	if(id == null)
	{
%>
		<form method="post" action="LoginOK">
			아이디 : <input type="text" name="id"><br>
			비밀번호 : <input type="password" name = "pw"><br>
			<input type = "submit" value ="로그인">
			<a href="memberRegister.html">회원가입</a>
		</form>
<%		
	} else {
%>
		<%= id %>님 환영합니다.<br>
		<a href="index.jsp?id=<%= id %>>">회원게시판</a>
		<a href="memberModify">개인정보수정</a>
		<a href="Logout">로그아웃</a>
<%				
	}
%>		
</body>
</html>

- LoginOK.java

package com.tistory.coderbear;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/LoginOK")
public class LoginOK extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public LoginOK() {
        super();
    }

	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String driver = "com.mysql.cj.jdbc.Driver";
		String url = "jdbc:mysql://localhost:3306/project?useSSL=false&serverTimezone=UTC";
		String user = "root";
		String password = "1234";
		String sql = "SELECT ID, PASSWORD FROM MEMBER WHERE ID=? AND PASSWORD=?";
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		
		String id = request.getParameter("id");
		String pw = request.getParameter("pw");
		HttpSession session = request.getSession();
		
		try {
			Class.forName(driver);
			conn = DriverManager.getConnection(url, user, password);
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1,  id);
			pstmt.setString(2,  password);
			rs = pstmt.executeQuery();
			
			if(rs.next()){
				session.setAttribute("id", id);
				response.sendRedirect("loginMain.jsp");
			}
			
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
}

- memberRegister.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<h2>회원가입</h2>
	<form name="member" method="post" action="MemberRegisterOK"
		onsubmit="return validateForm()">
		<table>
			<tr>
				<td>이름</td>
				<td><input type="text" name="name" required></td>
			</tr>
			<tr>
				<td>아이디</td>
				<td><input type="text" name="id" required></td>
			</tr>
			<tr>
				<td>비밀번호</td>
				<td><input type="password" name="pw" required></td>
			</tr>
			<tr>
				<td>비밀번호확인</td>
				<td><input type="password" name="pw2" required></td>
			</tr>
			<tr>
				<td>성별</td>
				<td><input type="radio" name="gender" value="male" checked>남
					<input type="radio" name="gender" value="female">여</td>
			</tr>
			<tr>
				<td>이메일</td>
				<td><input type="email" name="email" required></td>
			</tr>
			<tr>
				<td>취미</td>
				<td>
					<input type="checkbox" name="hobby" value="swimming">수영 
					<input type="checkbox" name="hobby" value="baseball">야구 
					<input type="checkbox" name="hobby" value="movie">영화감상 
					<input type="checkbox" name="hobby" value="music">음악감상
				</td>
			</tr>
			<tr>
				<td>핸드폰</td>
				<td>
					<select name="phone">
						<option value="010">010</option>
						<option value="011">011</option>
						<option value="016">016</option>
					</select> 
					<input type="text" name="phone2" required>
				</td>
			</tr>
			<tr>
				<td colspan="2">
					<input type="submit" value="회원가입"> 
					<input type="reset" value="초기화">
				</td>
			</tr>
		</table>
	</form>
	<script>
		function validateForm() {
			var pw = document.forms["member"]["pw"].value;
			var pw2 = document.forms["member"]["pw2"].value;
			if (pw != pw2) {
				alert("비밀번호가 서로 맞지 않습니다.");
				return false;
			}
		}
	</script>
</body>
</html>

- MemberRegister.java

package com.tistory.coderbear;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/MemberRegister")
public class MemberRegister extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public MemberRegister() {
        super();
    }

	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String driver = "com.mysql.cj.jdbc.Driver";
		String url = "jdbc:mysql://localhost:3306/project?useSSL=false&serverTimezone=UTC";
		String user = "root";
		String password = "1234";
		String sql = "INSERT INTO MEMBER (NAME, ID, pw, gender, EMAIL, phone1, phone2, HOBBY) VALUES(?, ?, ?, ?, ?, ?, ?, ?)";
		Connection conn = null;
		PreparedStatement pstmt = null;
		ResultSet rs = null;
		
		int result = 0;
		String phone1 = null, phone2 = null, hobby = null;
		String[] temp = null;
		
		try {
			Class.forName(driver);
			conn = DriverManager.getConnection(url, user, password);
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1, request.getParameter("name"));
			pstmt.setString(2, request.getParameter("id"));
			pstmt.setString(3, request.getParameter("pw"));
			pstmt.setString(4, request.getParameter("gender"));
			pstmt.setString(5, request.getParameter("email"));
			pstmt.setString(6, request.getParameter("phone1"));
			pstmt.setString(7, request.getParameter("phone2"));
			
			temp = request.getParameterValues(hobby);
			for(int i=0;i<temp.length;i++) {
				hobby += temp[i] + " ";
			}
			pstmt.setString(8, hobby);
			result = pstmt.executeUpdate();
			
			if(result >=1) {
				response.sendRedirect("loginMain.jsp");
			} else {
				response.sendRedirect("error.jsp");
			}
			
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
}

 

- memberModify.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ include file ="dbConn.jsp" %>
<%
	String name = null, id = null, gender = null, email = null, hobby = null, phone1 = null, phone2 = null;
	String sql = "SELECT * FROM MEMBER WHERE ID=?";

	try{
		pstmt = conn.prepareStatement(sql);
		pstmt.setString(1, (String)session.getAttribute("id"));
		rs = pstmt.executeQuery();
		
		if(rs.next()){
			name = rs.getString("name");
			id = rs.getString("id");
			gender = rs.getString("gender");
			email = rs.getString("email");
			hobby = rs.getString("hobby");
			phone1 = rs.getString("phone1");
			phone2 = rs.getString("phone2");
		}		
	} catch(Exception e){
		e.printStackTrace();
	}
%>

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<h2>개인정보수정</h2>
	<form name="member" method="post" action="MemberRegisterOK"
		onsubmit="return validateForm()">
		<table>
			<tr>
				<td>이름</td>
				<td>
					<input type="text" name="name" value="<%=name %>" disabled>
				</td>
			</tr>
			<tr>
				<td>아이디</td>
				<td>
					<input type="text" value="<%=id %>" readonly>
				</td>
			</tr>
			<tr>
				<td>비밀번호</td>
				<td>
					<input type="password" name="pw" required>
				</td>
			</tr>
			<tr>
				<td>비밀번호확인</td>
				<td>
					<input type="password" name="pw2" required>
				</td>
			</tr>
			<tr>
				<td>성별</td>
				<td>
					<input type="radio" name="gender" value="male" 
						<%
							if(gender.equals("male")) {
						%>
								checked
						<%
							} 
						%>
					>남
					<input type="radio" name="gender" value="female" 
						<%
							if(gender.equals("female")) {
						%>		
								checked
						<%
							} 
						%>
					>여
				</td>
			</tr>
			<tr>
				<td>이메일</td>
				<td>
					<input type="email" name="email" value="<%=email %>" required>
				</td>
			</tr>
			<tr>
				<td>취미</td>
				<td>
					<input type="checkbox" name="hobby" value="swimming" 
						<%
							if(hobby.indexOf("swimming")!=-1){ 
						%>
								checked
						<% 
							}
						%>
					>수영 
					<input type="checkbox" name="hobby" value="baseball" 
						<%
							if(hobby.indexOf("야구")!=-1){ 
						%>
								checked 
						<%
							} 
						%>
					>야구 
					<input type="checkbox" name="hobby" value="movie" 
						<%
							if(hobby.indexOf("영화감상")!=-1){ 
						%>
								checked 
						<%
							} 
						%>
					>영화감상
					<input type="checkbox" name="hobby" value="music" 
						<% 
							if(hobby.indexOf("음악감상")!=-1){
						%>
								checked 
						<%
							} 
						%>
					>음악감상
				</td>
			</tr>
			<tr>
				<td>핸드폰</td>
				<td>
					<select name="phone1">
						<option value="010" 
							<% 
								if(phone1.equals("010")){ 
							%> 
									selected 
							<% 	
								} 
							%>
						>010 
						</option>
						<option value="011"
							<% 
								if(phone1.equals("011")){ 
							%> 
									selected 
							<% 	
								} 
							%>
						>011
						</option>
						<option value="016" 
							<% 
								if(phone1.equals("016")){ 
							%> 
									selected 
							<% 	
								} 
							%>
						>016
						</option>
					</select> 
					<input type="text" name="phone2" required>
				</td>
			</tr>
			<tr>
				<td colspan="2">
					<input type="submit" value="회원가입"> 
					<input type="reset" value="초기화">
				</td>
			</tr>
		</table>
	</form>
	<script>
		function validateForm() {
			var pw = document.forms["member"]["pw"].value;
			var pw2 = document.forms["member"]["pw2"].value;
			if (pw != pw2) {
				alert("비밀번호가 서로 맞지 않습니다.");
				return false;
			}
		}
	</script>
</body>
</html>

- MemberModify.java

package com.tistory.coderbear;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/MemberModify")
public class MemberModify extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public MemberModify() {
        super();
    }

	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String driver = "com.mysql.cj.jdbc.Driver";
		String url = "jdbc:mysql://localhost:3306/project?useSSL=false&serverTimezone=UTC";
		String user = "root";
		String password = "1234";
		String sql = "UPDATE MEMBER SET pw=?, gender=?, EMAIL=?, HOBBY=?, phone1=?, phone2=? WHERE id=?";
		Connection conn = null;
		PreparedStatement pstmt = null;
		
		int result = 0;
		String phone1 = null, phone2 = null, hobby = null;
		String[] temp = null;
		
		try {
			Class.forName(driver);
			conn = DriverManager.getConnection(url, user, password);
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1, request.getParameter("name"));
			pstmt.setString(2, request.getParameter("id"));
			pstmt.setString(3, request.getParameter("pw"));
			pstmt.setString(4, request.getParameter("gender"));
			pstmt.setString(5, request.getParameter("email"));
			pstmt.setString(6, request.getParameter("phone1"));
			pstmt.setString(7, request.getParameter("phone2"));
			
			temp = request.getParameterValues(hobby);
			for(int i=0;i<temp.length;i++) {
				hobby += temp[i] + " ";
			}
			pstmt.setString(8, hobby);
			result = pstmt.executeUpdate();
			
			if(result > 0) {
				response.sendRedirect("loginMain.jsp");
			} else {
				response.sendRedirect("error.jsp");
			}
		} catch(Exception e) {
			e.printStackTrace();
		}
	}
}

- Logout.java

package com.tistory.coderbear;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/Logout")
public class Logout extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public Logout() {
        super();
    }

	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		HttpSession session = request.getSession();
		session.invalidate();
		response.sendRedirect("loginMain.jsp");
	}
}
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