[개발환경]
DB: Toad for SQL Server Freeware 5.8
eclipse: jee-oxygen
jdk: 1.8
tomcat: 9
bootstrap: 3.3.7(https://blog.naver.com/ndb796/221020960319)
인프런에서 나동빈님이 강의 중
[누구나 따라하면서 배우는 JSP 커뮤니티 게시판 만들기]를 수강해보았습니다. 제가 실습한 환경과 영상에서 만든 환경 구축 방법은 다릅니다. 해피님이 올려주신 코드도 참고하였습니다. 해피님 블로그로 가시면 수강하면서 도움 받을 수 있습니다.
- 수강 후 느낀점
부트스트랩이 뭔지 한번에 느낄 수 있습니다.
JSP 기초에 대해서 알 수 있습니다.
로그인에 대한 기본 개념을 학습 할 수 있습니다.
DB에 대한 기본 개념을 학습 할 수 있습니다.
기록으로 남기기 위해 포스트 작성합니다.
main.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import ="java.io.PrintWriter" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
<meta name="viewport" content="width=device-width", initial-scale="1">
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="js/bootstrap.js"></script>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body>
<%
String userID = null;
if(session.getAttribute("userID") != null){
userID = (String) session.getAttribute("userID");
}
%>
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
aria-expanded ="false">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판 웹사이트</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active"><a href="main.jsp">메인</a></li>
<li><a href="bbs.jsp">게시판</a></li>
</ul>
<%
if (userID == null ) {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="login.jsp">로그인</a></li>
<li><a href="join.jsp">회원가입</a></li>
</ul>
</li>
</ul>
<% }else{ %>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">나의정보<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logoutAction.jsp">로그아웃</a></li>
</ul>
</li>
</ul>
<% } %>
</div>
</nav>
<div class="container">
<div class="row" >
<h1>JSP 게시판 웹페이지 메인입니다.</h1>
</div>
</div>
</body>
</html>login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
<meta name="viewport" content="width=device-width", initial-scale="1">
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="js/bootstrap.js"></script>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body>
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
aria-expanded ="false">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판 웹사이트</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li><a href="bbs.jsp">게시판</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li class="active"><a href="login.jsp">로그인</a></li>
<li><a href="join.jsp">회원가입</a></li>
</ul>
</li>
</ul>
</div>
</nav>
<div class="container">
<div class="col-lg-4"></div>
<div class="col-lg-4">
<div class="jumbotron" style="padding-top:20px;">
<form method="post" action="loginAction.jsp">
<h3 style="text-align:center">로그인 화면</h3>
<div class="form-group">
<input type ="text" class="form-control" placeholder="아이디" name="userID" mexlength="20">
</div>
<div class="form-group">
<input type="password" class="form-control" placeholder="비밀번호" name="userPassword" mexlength="20">
</div>
<input type="submit" class="btn btn-primary form-control" value="로그인">
</form>
</div>
</div>
</div>
</body>
</html>User.java
package user;
public class User {
private String userID;
private String userPassword;
private String userName;
private String userGender;
private String userEmail;
public String getUserID() {
return userID;
}
public void setUserID(String userID) {
this.userID = userID;
}
public String getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserGender() {
return userGender;
}
public void setUserGender(String userGender) {
this.userGender = userGender;
}
public String getUserEmail() {
return userEmail;
}
public void setUserEmail(String userEmail) {
this.userEmail = userEmail;
}
}
UserDAO.java
package user;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class UserDAO {
private Connection conn;
private PreparedStatement pstmt;
private ResultSet rs;
public UserDAO() {
try {
String dbURL= "jdbc:sqlserver://0.0.0.0;databaseName=BBS";
String dbID="#";
String dbPassword="#";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection(dbURL, dbID, dbPassword);
}catch(Exception e) {
e.printStackTrace();
}
}
public int login(String userID, String userPassword) {
//System.Println("1111111111111111");
String SQL = "SELECT userPassword FROM dbo.[USER] WHERE userID = ?";
try {
pstmt = conn.prepareStatement(SQL);
pstmt.setString(1, userID);
rs = pstmt.executeQuery();
if(rs.next()){
if(rs.getString(1).equals(userPassword))
return 1; // 로그인 성공
else
return 0; // 비밀번호 불일치
}
return -1; // 아이디가 없음
}catch(Exception e) {
e.printStackTrace();
}
return -2; // 데이터베이스 오류
}
public int join(User user) {
String SQL = "insert into dbo.[USER](userID, userPassword, userName, userGender, userEmail) values(?,?,?,?,?)";
//String SQL = "INSERT INTO USER VALUES (?,?,?,?,?)";
//insert into dbo.[USER](userID, userPassoword, userName, userGender, userEmail)values('gildong', '123456', '홍길동', '남자', 'gildong@naver.com');
//SELECT userPassword FROM dbo.[USER] WHERE userID = 'sdfsdf';
try {
pstmt = conn.prepareStatement(SQL);
pstmt.setString(1, user.getUserID());
pstmt.setString(2, user.getUserPassword());
pstmt.setString(3, user.getUserName());
pstmt.setString(4, user.getUserGender());
pstmt.setString(5, user.getUserEmail());
return pstmt.executeUpdate();
} catch(Exception e) {
e.printStackTrace();
}
return -1; // 데이터 베이스 오류
}
}
loginAction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="user.UserDAO" %>
<%@ page import="java.io.PrintWriter" %>
<% request.setCharacterEncoding("UTF-8"); %>
<jsp:useBean id="user" class="user.User" scope="page"/>
<jsp:setProperty name="user" property="userID"/>
<jsp:setProperty name="user" property="userPassword"/>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
</head>
<body>
<%
String userID = null;
if(session.getAttribute("userID") != null){
userID = (String) session.getAttribute("userID");
}
if(userID != null){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('이미로그인이 되어있습니다.');");
script.println("history.back()");
script.println("</script>");
}
UserDAO userDAO = new UserDAO();
int result= userDAO.login(user.getUserID(), user.getUserPassword());
if(result == 1){
session.setAttribute("userID", user.getUserID());
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("location.href = 'main.jsp'");
script.println("</script>");
}else if(result == 0){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('비밀번호가 틀립니다.');");
script.println("history.back()");
script.println("</script>");
}else if(result == -1){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('존재하지 않는 아이디 입니다.');");
script.println("history.back()");
script.println("</script>");
}else if(result == -1){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('데이터베이스 오류가 발생했습니다.');");
script.println("history.back()");
script.println("</script>");
}
%>
</body>
</html>
join.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
<meta name="viewport" content="width=device-width", initial-scale="1">
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="js/bootstrap.js"></script>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body>
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
aria-expanded ="false">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판 웹사이트</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li><a href="bbs.jsp">게시판</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="login.jsp">로그인</a></li>
<li class="active"><a href="join.jsp">회원가입</a></li>
</ul>
</li>
</ul>
</div>
</nav>
<div class="container">
<div class="col-lg-4"></div>
<div class="col-lg-4">
<div class="jumbotron" style="padding-top:20px;">
<form method="post" action="joinAction.jsp">
<h3 style="text-align:center">회원가입 화면</h3>
<div class="form-group">
<input type ="text" class="form-control" placeholder="아이디" name="userID" mexlength="20">
</div>
<div class="form-group">
<input type="password" class="form-control" placeholder="비밀번호" name="userPassword" mexlength="20">
</div>
<div class="form-group">
<input type="text" class="form-control" placeholder="이름" name="userName" mexlength="20">
</div>
<div class="form-group" style="text-align:center;">
<div class="btn-group" data-toggle="buttons">
<label class="btn btn-primary active">
<input type="radio" name="userGender" autocomplete="off" value="남자" checked>남자
</label>
<label class="btn btn-primary">
<input type="radio" name="userGender" autocomplete="off" value="여자">여자
</label>
</div>
</div>
<div class="form-group">
<input type="email" class="form-control" placeholder="이메일" name="userEmail" mexlength="20">
</div>
<input type="submit" class="btn btn-primary form-control" value="회원가입">
</form>
</div>
</div>
</div>
</body>
</html>UserDAO.java 에 join 추가
joinAcrion.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="user.UserDAO" %> <!-- userdao의 클래스 가져옴 -->
<%@ page import="java.io.PrintWriter" %> <!-- 자바 클래스 사용 -->
<% request.setCharacterEncoding("UTF-8"); %>
<!-- 한명의 회원정보를 담는 user클래스를 자바 빈즈로 사용 / scope:페이지 현재의 페이지에서만 사용-->
<jsp:useBean id="user" class="user.User" scope="page" />
<jsp:setProperty name="user" property="userID" />
<jsp:setProperty name="user" property="userPassword" />
<jsp:setProperty name="user" property="userName" />
<jsp:setProperty name="user" property="userGender" />
<jsp:setProperty name="user" property="userEmail" />
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
//라긴된 회원들은 페이지에 접속 할 수 없도록
String userID = null;
if(session.getAttribute("userID") != null ){
userID = (String) session.getAttribute("userID");
}
if(userID != null){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('이미 로그인 되어있습니다.')");
script.println("location.href = 'main.jsp'");
script.println("</script>");
}
if (user.getUserID() == null || user.getUserPassword() == null || user.getUserName() == null
|| user.getUserGender() == null || user.getUserEmail() == null){
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('입력이 안 된 사항이 있습니다.')");
script.println("history.back()");
script.println("</script>");
} else{
UserDAO userDAO = new UserDAO(); //인스턴스생성
int result = userDAO.join(user);
if(result == -1){ // 아이디가 기본키기. 중복되면 오류.
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('이미 존재하는 아이디 입니다.')");
script.println("history.back()");
script.println("</script>");
}
//가입성공
else {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("location.href = 'main.jsp'");
script.println("</script>");
}
}
%>
</body>
</body>
</html>logoutAction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
</head>
<body>
<%
session.invalidate();
%>
<script>
location.href = 'main.jsp';
</script>
</body>
</html>
bbs.jsp
<%@page import="javax.security.auth.callback.ConfirmationCallback"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.io.PrintWriter"%>
<%@ page import="bbs.BbsDAO"%>
<%@ page import="bbs.Bbs"%>
<%@ page import="java.util.ArrayList"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- 뷰포트 -->
<meta name="viewport" content="width=device-width" initial-scale="1">
<!-- 스타일시트 참조 -->
<link rel="stylesheet" href="css/bootstrap.css">
<title>jsp 게시판 웹사이트</title>
<style type="text/css">
a, a:hover {
color: #000000;
text-decoration: none;
}
</style>
</head>
<body>
<%
//로긴한사람이라면 userID라는 변수에 해당 아이디가 담기고 그렇지 않으면 null값
String userID = null;
if (session.getAttribute("userID") != null) {
userID = (String) session.getAttribute("userID");
}
int pageNumber = 1; //기본 페이지 넘버
//페이지넘버값이 있을때
if (request.getParameter("pageNumber") != null) {
pageNumber = Integer.parseInt(request.getParameter("pageNumber"));
}
%>
<!-- 네비게이션 -->
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="bs-example-navbar-collapse-1"
aria-expaned="false">
<span class="icon-bar"></span> <span class="icon-bar"></span> <span
class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판 웹사이트</a>
</div>
<div class="collapse navbar-collapse"
id="#bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li class="active"><a href="bbs.jsp">게시판</a></li>
</ul>
<%
//라긴안된경우
if (userID == null) {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown"><a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="login.jsp">로그인</a></li>
<li><a href="join.jsp">회원가입</a></li>
</ul></li>
</ul>
<%
} else {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown"><a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">회원관리<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logoutAction.jsp">로그아웃</a></li>
</ul></li>
</ul>
<%
}
%>
</div>
</nav>
<!-- 게시판 -->
<div class="container">
<div class="row">
<table class="table table-striped"
style="text-align: center; border: 1px solid #dddddd">
<thead>
<tr>
<th style="background-color: #eeeeee; text-align: center;">번호</th>
<th style="background-color: #eeeeee; text-align: center;">제목</th>
<th style="background-color: #eeeeee; text-align: center;">작성자</th>
<th style="background-color: #eeeeee; text-align: center;">작성일</th>
</tr>
</thead>
<tbody>
<%
BbsDAO bbsDAO = new BbsDAO();
ArrayList<Bbs> list = bbsDAO.getList(pageNumber);
for (int i = 0; i < list.size(); i++) {
%>
<tr>
<td><%=list.get(i).getBbsID()%></td>
<td><a href="view.jsp?bbsID=<%=list.get(i).getBbsID()%>"><%=list.get(i).getBbsTitle()%></a></td>
<td><%=list.get(i).getUserID()%></td>
<td><%=list.get(i).getBbsDate().substring(0, 11) + list.get(i).getBbsDate().substring(11, 13) + "시"
+ list.get(i).getBbsDate().substring(14, 16) + "분"%></td>
</tr>
<%
}
%>
</tbody>
</table>
<!-- 페이지 넘기기 -->
<%
if (pageNumber != 1) {
%>
<a href="bbs.jsp?pageNumber=<%=pageNumber - 1%>"
class="btn btn-success btn-arrow-left">이전</a>
<%
}
if (bbsDAO.nextPage(pageNumber)) {
%>
<a href="bbs.jsp?pageNumber=<%=pageNumber + 1%>"
class="btn btn-success btn-arrow-left">다음</a>
<%
}
%>
<!-- 회원만넘어가도록 -->
<%
//if logined userID라는 변수에 해당 아이디가 담기고 if not null
if (session.getAttribute("userID") != null) {
%>
<a href="write.jsp" class="btn btn-primary pull-right">글쓰기</a>
<%
} else {
%>
<button class="btn btn-primary pull-right"
onclick="if(confirm('로그인 하세요'))location.href='login.jsp';"
type="button">글쓰기</button>
<%
}
%>
</div>
</div>
<!-- 애니매이션 담당 JQUERY -->
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<!-- 부트스트랩 JS -->
<script src="js/bootstrap.js"></script>
</body>
</html>
Bbs.java
package bbs;
public class Bbs {
public int getBbsID() {
return bbsID;
}
public void setBbsID(int bbsID) {
this.bbsID = bbsID;
}
public String getBbsTitle() {
return bbsTitle;
}
public void setBbsTitle(String bbsTitle) {
this.bbsTitle = bbsTitle;
}
public String getUserID() {
return userID;
}
public void setUserID(String userID) {
this.userID = userID;
}
public String getBbsDate() {
return bbsDate;
}
public void setBbsDate(String bbsDate) {
this.bbsDate = bbsDate;
}
public String getBbsContent() {
return bbsContent;
}
public void setBbsContent(String bbsContent) {
this.bbsContent = bbsContent;
}
public int getBbsAvailable() {
return bbsAvailable;
}
public void setBbsAvailable(int bbsAvailable) {
this.bbsAvailable = bbsAvailable;
}
private int bbsID;
private String bbsTitle;
private String userID;
private String bbsDate;
private String bbsContent;
private int bbsAvailable;
}
write.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import ="java.io.PrintWriter" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹 사이트</title>
<meta name="viewport" content="width=device-width", initial-scale="1">
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="js/bootstrap.js"></script>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body>
<%
String userID = null;
if(session.getAttribute("userID") != null){
userID = (String) session.getAttribute("userID");
}
%>
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="#bs-example-navbar-collapse-1"
aria-expanded ="false">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판 웹사이트</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li class="active"><a href="bbs.jsp">게시판</a></li>
</ul>
<%
if (userID == null ) {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="login.jsp">로그인</a></li>
<li><a href="join.jsp">회원가입</a></li>
</ul>
</li>
</ul>
<% }else{ %>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="ture"
aria-expanded="false">나의정보<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logoutAction.jsp">로그아웃</a></li>
</ul>
</li>
</ul>
<% } %>
</div>
</nav>
<div class="container">
<div class="row">
<form method="post" action="writeAction.jsp">
<table class="table table-striped" style="text-align:center; border: 1px solid #dddddd">
<thead>
<tr>
<th colspan="2" style="background-color: #eee; text-align: center;">게시판 글쓰기 양식</th>
</tr>
</thead>
<tbody>
<tr>
<td><input type="text" class="form-control" placeholder="글 제목" name="bbsTitle" maxlength="50"></td>
</tr>
<tr>
<td>
<textarea type="text" class="form-control" placeholder="글 내용" name="bbsContent" maxlength="2048" style="height:350px;">
</textarea>
</td>
</tr>
</tbody>
</table>
<input type="submit" class="btn btn-primary pull-right" value="글쓰기">
</form>
</div>
</div>
</body>
</html>
BbsDAO.java
package bbs;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
public class BbsDAO {
private Connection conn;
private ResultSet rs;
public BbsDAO() {
try {
String dbURL= "jdbc:sqlserver://0.0.0.0;databaseName=BBS";
String dbID="#";
String dbPassword="#";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
conn = DriverManager.getConnection(dbURL, dbID, dbPassword);
}catch(Exception e) {
e.printStackTrace();
}
}
public String getDate() {
String SQL = "Select GETDATE();";
//String SQL = "Select NOW()";
//Select GETDATE();
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
rs = pstmt.executeQuery();
if(rs.next()) {
return rs.getString(1);
}
}catch(Exception e) {
e.printStackTrace();
}
return ""; // 데이터베이스 오류
}
public int getNext() {
String SQL = "SELECT bbsID FROM dbo.[BBS] ORDER BY bbsID DESC";
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
rs = pstmt.executeQuery();
if(rs.next()) {
return rs.getInt(1) + 1;
}
return 1; //첫번째 게시물인 경우
}catch(Exception e) {
e.printStackTrace();
}
return -1; // 데이터베이스 오류
}
public int write(String bbsTitle, String userID, String bbsContent) {
//String SQL = "INSERT INTO BBS VALUE (?,?,?,?,?)";
String SQL = "insert into dbo.[BBS](bbsID, bbsTitle, userID, bbsDate, bbsContent, bbsAvailable) values(?,?,?,?,?,?)";
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setInt(1, getNext());
pstmt.setString(2, bbsTitle);
pstmt.setString(3, userID);
pstmt.setString(4, getDate());
pstmt.setString(5, bbsContent);
pstmt.setInt(6, 1);
//rs = pstmt.executeQuery();
//System.out.println(SQL);
return pstmt.executeUpdate();
}catch(Exception e) {
e.printStackTrace();
}
return -1; // 데이터베이스 오류
}
public ArrayList<Bbs> getList(int pageNumber){
//String SQL = "SELECT * FROM BBS WHERE bbsID < ? bbsAvailable = 1 ORDER BY bbsID DESC LIMIT 10";
String SQL = "SELECT * FROM dbo.[BBS] WHERE 1=1 AND bbsID < ? AND bbsAvailable = 1 ORDER BY bbsID DESC OFFSET 0 ROWS FETCH NEXT 10 ROWS ONLY";
//SELECT * FROM dbo.[BBS] WHERE 1=1 AND bbsID < 10 AND bbsAvailable = 1 ORDER BY bbsID DESC OFFSET 1 ROWS FETCH NEXT 10 ROWS ONLY;
ArrayList<Bbs> list = new ArrayList<Bbs>();
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setInt(1, getNext() - (pageNumber -1) * 10);
rs = pstmt.executeQuery();
while (rs.next()) {
Bbs bbs = new Bbs();
bbs.setBbsID(rs.getInt(1));
bbs.setBbsTitle(rs.getString(2));
bbs.setUserID(rs.getString(3));
bbs.setBbsDate(rs.getString(4));
bbs.setBbsContent(rs.getString(5));
bbs.setBbsAvailable(rs.getInt(6));
list.add(bbs);
}
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
//10 단위 페이징 처리를 위한 함수
public boolean nextPage (int pageNumber) {
//String SQL = "SELECT * FROM BBS WHERE bbsID < ? bbsAvailable = 1 ORDER BY bbsID DESC LIMIT 10";
String SQL = "SELECT * FROM dbo.[BBS] WHERE 1=1 AND bbsID < ? AND bbsAvailable = 1 ORDER BY bbsID DESC OFFSET 0 ROWS FETCH NEXT 10 ROWS ONLY";
ArrayList<Bbs> list = new ArrayList<Bbs>();
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setInt(1, getNext() - (pageNumber -1) * 10);
rs = pstmt.executeQuery();
if (rs.next()) {
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
public Bbs getBbs(int bbsID) {
String SQL = "SELECT * FROM dbo.[BBS] WHERE bbsID = ?";
//String SQL = "SELECT * FROM BBS WHERE bbsID = ?";
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setInt(1, bbsID);
rs = pstmt.executeQuery();
if (rs.next()) {
Bbs bbs = new Bbs();
bbs.setBbsID(rs.getInt(1));
bbs.setBbsTitle(rs.getString(2));
bbs.setUserID(rs.getString(3));
bbs.setBbsDate(rs.getString(4));
bbs.setBbsContent(rs.getString(5));
bbs.setBbsAvailable(rs.getInt(6));
return bbs;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
//수정 함수
public int update(int bbsID, String bbsTitle, String bbsContent) {
String SQL = "UPDATE dbo.[BBS] SET bbsTitle = ?, bbsContent = ? WHERE bbsID = ?";
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setString(1, bbsTitle);
pstmt.setString(2, bbsContent);
pstmt.setInt(3, bbsID);
return pstmt.executeUpdate();
} catch (Exception e) {
e.printStackTrace();
}
return -1; // 데이터베이스 오류
}
//삭제 함수
public int delete(int bbsID) {
String SQL = "UPDATE dbo.[BBS] SET bbsAvailable = 0 WHERE bbsID = ?";
try {
PreparedStatement pstmt = conn.prepareStatement(SQL);
pstmt.setInt(1, bbsID);
return pstmt.executeUpdate();
} catch (Exception e) {
e.printStackTrace();
}
return -1; // 데이터베이스 오류
}
}
writeAction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="bbs.BbsDAO"%>
<!-- bbsdao의 클래스 가져옴 -->
<%@ page import="java.io.PrintWriter"%>
<!-- 자바 클래스 사용 -->
<%
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html; charset=UTF-8"); //set으로쓰는습관들이세오.
%>
<!-- 한명의 회원정보를 담는 user클래스를 자바 빈즈로 사용 / scope:페이지 현재의 페이지에서만 사용-->
<jsp:useBean id="bbs" class="bbs.Bbs" scope="page" />
<!-- // Bbs bbs = new Bbs(); -->
<jsp:setProperty name="bbs" property="bbsTitle" /><!-- bbs.setBbsTitle(requrst) -->
<jsp:setProperty name="bbs" property="bbsContent" />
<%
System.out.println(bbs);
%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
String userID = null;
if (session.getAttribute("userID") != null) {//유저아이디이름으로 세션이 존재하는 회원들은
userID = (String) session.getAttribute("userID");//유저아이디에 해당 세션값을 넣어준다.
}
if (userID == null) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('로그인을 하세요.')");
script.println("location.href = 'login.jsp'");
script.println("</script>");
} else {
if (bbs.getBbsTitle() == null || bbs.getBbsContent() == null) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('입력이 안된 사항이 있습니다')");
script.println("history.back()");
script.println("</script>");
} else {
BbsDAO BbsDAO = new BbsDAO();
int result = BbsDAO.write(bbs.getBbsTitle(), userID, bbs.getBbsContent());
if (result == -1) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('글쓰기에 실패했습니다')");
script.println("history.back()");
script.println("</script>");
} else {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("location.href='bbs.jsp'");
script.println("</script>");
}
}
}
%>
</body>
</html>view.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.io.PrintWriter"%>
<%@ page import="bbs.Bbs"%>
<%@ page import="bbs.BbsDAO"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- 뷰포트 -->
<meta name="viewport" content="width=device-width" initial-scale="1">
<!-- 스타일시트 참조 -->
<link rel="stylesheet" href="css/bootstrap.css">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
//로긴한사람이라면 userID라는 변수에 해당 아이디가 담기고 그렇지 않으면 null값
String userID = null;
if (session.getAttribute("userID") != null) {
userID = (String) session.getAttribute("userID");
}
int bbsID = 0;
if (request.getParameter("bbsID") != null) {
bbsID = Integer.parseInt(request.getParameter("bbsID"));
}
if (bbsID == 0) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('유효하지 않은 글 입니다.')");
script.println("location.href = 'bbs.jsp'");
script.println("</script>");
}
Bbs bbs = new BbsDAO().getBbs(bbsID);
%>
<!-- 네비게이션 -->
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="bs-example-navbar-collapse-1"
aria-expaned="false">
<span class="icon-bar"></span> <span class="icon-bar"></span> <span
class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판</a>
</div>
<div class="collapse navbar-collapse"
id="#bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li class="active"><a href="bbs.jsp">게시판</a></li>
</ul>
<%
//라긴안된경우
if (userID == null) {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown"><a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">접속하기<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="login.jsp">로그인</a></li>
<li><a href="join.jsp">회원가입</a></li>
</ul></li>
</ul>
<%
} else {
%>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown"><a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">회원관리<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logoutAction.jsp">로그아웃</a></li>
</ul></li>
</ul>
<%
}
%>
</div>
</nav>
<!-- 게시판 -->
<div class="container">
<div class="row">
<table class="table table-striped"
style="text-align: center; border: 1px solid #dddddd">
<thead>
<tr>
<th colspan="3"
style="background-color: #eeeeee; text-align: center;">글 보기 </th>
</tr>
</thead>
<tbody>
<tr>
<td style="width: 20%;"> 글 제목 </td>
<td colspan="2"><%= bbs.getBbsTitle() %></td>
</tr>
<tr>
<td>작성자</td>
<td colspan="2"><%= bbs.getUserID() %></td>
</tr>
<tr>
<td>작성일</td>
<td colspan="2"><%= bbs.getBbsDate().substring(0, 11) + bbs.getBbsDate().substring(11, 13) + "시"
+ bbs.getBbsDate().substring(14, 16) + "분"%></td>
</tr>
<tr>
<td>내용</td>
<td colspan="2" style="min-height: 200px; text-align: left;"><%= bbs.getBbsContent().replaceAll(" ", " ").replaceAll("<", "<").replaceAll(">", ">").replaceAll("\n", "<br/>") %>
</td>
</tr>
</tbody>
</table>
<a href = "bbs.jsp" class="btn btn-primary">목록</a>
<%
//글작성자 본인일시 수정 삭제 가능
if(userID != null && userID.equals(bbs.getUserID())){
%>
<a href="update.jsp?bbsID=<%= bbsID %>" class="btn btn-primary">수정</a>
<a onclick="return confirm('정말로 삭제하시겠습니까?')" href="deleteAction.jsp?bbsID=<%= bbsID %>" class="btn btn-primary ">삭제</a>
<%
}
%>
</div>
</div>
<!-- 애니매이션 담당 JQUERY -->
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<!-- 부트스트랩 JS -->
<script src="js/bootstrap.js"></script>
</body>
</html>update.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.io.PrintWriter"%>
<%@ page import="bbs.Bbs"%>
<%@ page import="bbs.BbsDAO"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<!-- 뷰포트 -->
<meta name="viewport" content="width=device-width" initial-scale="1">
<!-- 스타일시트 참조 -->
<link rel="stylesheet" href="css/bootstrap.css">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
//로긴한사람이라면 userID라는 변수에 해당 아이디가 담기고 그렇지 않으면 null값
String userID = null;
if (session.getAttribute("userID") != null) {
userID = (String) session.getAttribute("userID");
}
//로그인 안한 경우
if(userID == null) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('로그인을 하세요.')");
script.println("location.href = 'login.jsp'");
script.println("</script>");
}
int bbsID = 0;
if (request.getParameter("bbsID") != null) {
bbsID = Integer.parseInt(request.getParameter("bbsID"));
}
if (bbsID == 0) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('유효하지 않은 글 입니다.')");
script.println("location.href = 'bbs.jsp'");
script.println("</script>");
}
Bbs bbs = new BbsDAO().getBbs(bbsID);
if (!userID.equals(bbs.getUserID())) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('권한이 없습니다.')");
script.println("location.href = 'bbs.jsp'");
script.println("</script>");
}
%>
<!-- 네비게이션 -->
<nav class="navbar navbar-default">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed"
data-toggle="collapse" data-target="bs-example-navbar-collapse-1"
aria-expaned="false">
<span class="icon-bar"></span> <span class="icon-bar"></span> <span
class="icon-bar"></span>
</button>
<a class="navbar-brand" href="main.jsp">JSP 게시판</a>
</div>
<div class="collapse navbar-collapse"
id="#bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="main.jsp">메인</a></li>
<li class="active"><a href="bbs.jsp">게시판</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown"><a href="#" class="dropdown-toggle"
data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">회원관리<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logoutAction.jsp">로그아웃</a></li>
</ul>
</li>
</ul>
</div>
</nav>
<!-- 게시판 -->
<div class="container">
<div class="row">
<form method="post" action="updateAction.jsp?bbsID=<%= bbsID %> ">
<table class="table table-striped"
style="text-align: center; border: 1px solid #dddddd">
<thead>
<tr>
<th colspan="2"
style="background-color: #eeeeee; text-align: center;">글수정 </th>
</tr>
</thead>
<tbody>
<tr>
<td><input type="text" class="form-control" placeholder="글 제목" name="bbsTitle" maxlength="50" value="<%= bbs.getBbsTitle() %>" ></td>
</tr>
<tr>
<td><textarea class="form-control" placeholder="글 내용" name="bbsContent" maxlength="2048" style="height: 350px;" ><%= bbs.getBbsContent() %></textarea></td>
</tr>
</tbody>
</table>
<button type="submit" class="btn btn-primary pull-right" >글수정</button>
</form>
</div>
</div>
<!-- 애니매이션 담당 JQUERY -->
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<!-- 부트스트랩 JS -->
<script src="js/bootstrap.js"></script>
</body>
</html>
updateAction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="bbs.BbsDAO"%>
<%@ page import="bbs.Bbs"%>
<%@ page import="java.io.PrintWriter"%>
<%
request.setCharacterEncoding("UTF-8");
//sresponse.setContentType("text/html; charset=UTF-8");
%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
String userID = null;
if (session.getAttribute("userID") != null) {//유저아이디이름으로 세션이 존재하는 회원들은
userID = (String) session.getAttribute("userID");//유저아이디에 해당 세션값을 넣어준다.
}
if (userID == null) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('로그인을 하세요.')");
script.println("location.href = 'login.jsp'");
script.println("</script>");
}
//글이 유효한지 판별
int bbsID = 0;
if (request.getParameter("bbsID") != null) {
bbsID = Integer.parseInt(request.getParameter("bbsID"));
}
if (bbsID == 0) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('유효하지 않은 글 입니다.')");
script.println("location.href = 'bbs.jsp'");
script.println("</script>");
}
Bbs bbs = new BbsDAO().getBbs(bbsID);
if (!userID.equals(bbs.getUserID())) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('권한이 없습니다.')");
script.println("location.href = 'bbs.jsp'");
script.println("</script>");
} else {
if (request.getParameter("bbsTitle") == null || request.getParameter("bbsContent") == null
|| request.getParameter("bbsTitle").equals("") || request.getParameter("bbsContent").equals("") ) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('입력이 안된 사항이 있습니다')");
script.println("history.back()");
script.println("</script>");
} else {
BbsDAO BbsDAO = new BbsDAO();
int result = BbsDAO.update(bbsID, request.getParameter("bbsTitle"), request.getParameter("bbsContent"));
if (result == -1) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('글수정에 실패했습니다')");
script.println("history.back()");
script.println("</script>");
} else {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("location.href='bbs.jsp'");
//script.println("history.back()");
script.println("</script>");
}
}
}
%>
</body>
</html>
deleteAction.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="bbs.BbsDAO"%>
<%@ page import="bbs.Bbs"%>
<%@ page import="java.io.PrintWriter"%>
<%
request.setCharacterEncoding("UTF-8");
//response.setContentType("text/html; charset=UTF-8");
%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>jsp 게시판 웹사이트</title>
</head>
<body>
<%
String userID = null;
if (session.getAttribute("userID") != null) {//유저아이디이름으로 세션이 존재하는 회원들은
userID = (String) session.getAttribute("userID");//유저아이디에 해당 세션값을 넣어준다.
}
if (userID == null) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('로그인을 하세요.')");
script.println("location.href = 'login.jsp'");
script.println("</script>");
}
int bbsID = 0;
if(request.getParameter("bbsID") != null){
bbsID = Integer.parseInt(request.getParameter("bbsID"));
}
if(bbsID == 0) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('유효하지 않은 글 입니다')");
script.println("location.href='bbs.jsp'");
script.println("</script>");
}
Bbs bbs = new BbsDAO().getBbs(bbsID);
if(!userID.equals(bbs.getUserID())) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('권한이 없습니다')");
script.println("location.href='bbs.jsp'");
script.println("</script>");
}
else{
BbsDAO bbsDAO = new BbsDAO();
int result = bbsDAO.delete(bbsID);
if (result == -1) {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("alert('글 삭제에 실패했습니다')");
script.println("history.back()");
script.println("</script>");
} else {
PrintWriter script = response.getWriter();
script.println("<script>");
script.println("location.href='bbs.jsp'");
script.println("</script>");
}
}
%>
</body>
</html>
개인 정리 블로그입니다