下载地址http://download.csdn.net/detail/hsttmht/3987324
articletree.jsp
<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*" %>
<%
String admin = (String)session.getAttribute("admin");
if(admin != null && admin.equals("true")) {
login = true;
}
%>
<%!
String str = "";
boolean login = false;
private void tree(Connection conn, int id, int level) {
Statement stmt = null;
ResultSet rs = null;
String preStr = "";
for(int i=0; i<level; i++) {
preStr += "----";
}
try {
stmt = conn.createStatement();
String sql = "select * from article where pid = " + id;
rs = stmt.executeQuery(sql);
String strLogin = "";
while(rs.next()) {
if(login) {
strLogin = "<td><a href='Delete.jsp?id=" + rs.getInt("id") + "&pid=" + rs.getInt("pid") + "'>删除</a>";
}
str += "<tr><td>" + rs.getInt("id") + "</td><td>" +
preStr + "<a href='ShowArticleDetails.jsp?id=" + rs.getInt("id") + "'>" +
rs.getString("title") + "</a></td>" +
strLogin +
"</td></tr>";
if(rs.getInt("isleaf") != 0) {
tree(conn, rs.getInt("id"), level+1);
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if(rs != null) {
rs.close();
rs = null;
}
if(stmt != null) {
stmt.close();
stmt = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
%>
<%
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/bbs";
Connection conn = DriverManager.getConnection(url,"root","root");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from article where pid = 0");
String strLogin = "";
while(rs.next()) {
if(login) {
strLogin = "<td><a href='Delete.jsp?id=" + rs.getInt("id") + "&pid=" + rs.getInt("pid") + "'>删除</a>";
}
str += "<tr><td>" + rs.getInt("id") + "</td><td>" +
"<a href='ShowArticleDetails.jsp?id=" + rs.getInt("id") + "'>" +
rs.getString("title") + "</a></td>" +
strLogin +
"</td></tr>";
if(rs.getInt("isleaf") != 0) {
tree(conn, rs.getInt("id"), 1);
}
}
rs.close();
stmt.close();
conn.close();
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>Insert title here</title>
</head>
<body>
<table border="1">
<%= str %>
<%
str = "";
login = false;
%>
</table><br>
<a href="Post.jsp">发表新帖</a>
</body>
</html>
ShowArtciletree.jsp
<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*"%>
<%!String str = "";
String strLogin = "";
boolean login = false;%>
<%
String admin = (String) session.getAttribute("admin");
if (admin != null && admin.equals("true")) {
login = true;
}
%>
<%
int pageSize = 3;
String strPageNo = request.getParameter("pageNo");
int pageNo;
if (strPageNo == null || strPageNo.equals("")) {
pageNo = 1;
} else {
try {
pageNo = Integer.parseInt(strPageNo.trim());
} catch (NumberFormatException e) {
pageNo = 1;
}
if (pageNo <= 0)
pageNo = 1;
}
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/bbs?user=root&password=root";
Connection conn = DriverManager.getConnection(url);
Statement stmtCount = conn.createStatement();
ResultSet rsCount = stmtCount
.executeQuery("select count(*) from article where pid = 0");
rsCount.next();
int totalRecords = rsCount.getInt(1);
int totalPages = totalRecords % pageSize == 0 ? totalRecords
/ pageSize : totalRecords / pageSize + 1;
if (pageNo > totalPages)
pageNo = totalPages;
int startPos = (pageNo - 1) * pageSize;
Statement stmt = conn.createStatement();
ResultSet rs = stmt
.executeQuery("select * from article where pid = 0 order by pdate desc limit "
+ startPos + "," + pageSize);
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>Insert title here</title>
</head>
<body>
<a href="Post.jsp">发表新帖</a>
<br>
<table border="1">
<%
while (rs.next()) {
if (login) {
strLogin = "<td><a href='Delete.jsp?id=" + rs.getInt("id")
+ "&pid=" + rs.getInt("pid") + "'>删除</a>";
}
str += "<tr><td>" + "<a href='ShowArticleDetails.jsp?id="
+ rs.getInt("id") + "'>" + rs.getString("title")
+ "</td><td>" + strLogin + "</td></tr>";
;
}
rs.close();
stmt.close();
conn.close();
%>
<%=str%>
<%
str = "";
%>
</table>
<br>
共<%=totalPages%>页 第<%=pageNo%>页
<br>
<a href="ShowArticleFlat.jsp?pageNo=<%=pageNo - 1%>"> < </a>
<a href="ShowArticleFlat.jsp?pageNo=<%=pageNo + 1%>"> > </a>
<form name="form1" action="ShowArticleFlat.jsp">
<select name="pageNo" onchange="document.form1.submit()">
<%
for (int i = 1; i <= totalPages; i++) {
%>
<option value=<%=i%> <%=(pageNo == i) ? "selected" : ""%>>
第<%=i%>页
<%
}
%>
</select>
</form>
<form name="fom2" action="ShowArticleFlat.jsp">
<input type=text size=4 name="pageNo" value=<%=pageNo%> />
<input type="submit" value="go" />
</form>
</body>
</html>
showarticledetails.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="GBK"%>
<html>
<head>
<title>JDBC</title>
</head>
<body>
<%!ResultSet rs = null;
PreparedStatement pstmt = null;
Connection conn = null;%>
<%
String strid = request.getParameter("id");
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/bbs", "root", "root");
Statement stmt = conn.createStatement();
ResultSet rs = stmt
.executeQuery("select * from article where pid = "
+ strid);
while (rs.next()) {
%>
<table width="500" align="center" border="2" bgcolor="#FFFF00">
<tr>
<td>
ID
</td>
<td><%=rs.getInt("id")%></td>
</tr>
<tr>
<td>
Title
</td>
<td><%=rs.getString("title")%></td>
</tr>
<tr>
<td>
Content
</td>
<td><%=rs.getString("cont")%></td>
</tr>
</table>
<a href="Reply.jsp?id=<%=rs.getInt("id")%>&rootid=<%=rs.getInt("rootid")%>">replay</a>
<%
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (conn != null) {
conn.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
%>
</body>
</html>
delete.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ page import="java.sql.*" %>
<%!
private void del(Connection conn, int id) {
Statement stmt = null;
ResultSet rs = null;
try {
stmt = conn.createStatement();
String sql = "select * from article where pid = " + id;
rs = stmt.executeQuery(sql);
while(rs.next()) {
del(conn , rs.getInt("id"));
}
stmt.executeUpdate("delete from article where id = " + id);
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if(rs != null) {
rs.close();
rs = null;
}
if(stmt != null) {
stmt.close();
stmt = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
%>
<%
String admin = (String)session.getAttribute("admin");
if(admin == null || !admin.equals("true")) {
out.println("对不起,你无权删除本帖!");
return;
}
%>
<%
int id = Integer.parseInt(request.getParameter("id"));
int pid = Integer.parseInt(request.getParameter("pid"));
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost:3306/bbs";
Connection conn = DriverManager.getConnection(url,"root","1234");
conn.setAutoCommit(false);
del(conn , id);
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select count(*) from article where pid=" + pid);
rs.next();
int count = rs.getInt(1);
rs.close();
stmt.close();
if(count <= 0) {
Statement stmtUpdate = conn.createStatement();
stmtUpdate.executeUpdate("update article set isleaf = 0 where id = " + pid);
stmtUpdate.close();
}
conn.commit();
conn.setAutoCommit(true);
conn.close();
response.sendRedirect("articletree.jsp");
%>
reply.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ page import="java.sql.*"%>
<%
int id = Integer.parseInt(request.getParameter("id"));
int rootid = Integer.parseInt(request.getParameter("rootid"));
%>
<body>
<form action="ReplyOK.jsp" method="post">
<input type="hidden" name="id" value="<%=id%>" />
<input type="hidden" name="rootid" value="<%=rootid%>" />
<table>
<tr>
<td>
标题：
<input type="text" name="title">
</td>
</tr>
<tr>
<td>
内容：
<textarea name="cont" rows="15" cols="80"></textarea>
</td>
</tr>
<tr>
<td>
提交：
<input type="submit" value="submit" />
</td>
</tr>
</table>
</form>
</body>
replyOK.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ page import="java.sql.*"%>
<%
request.setCharacterEncoding("GBK");
int id = Integer.parseInt(request.getParameter("id"));
int rootid = Integer.parseInt(request.getParameter("rootid"));
String title = request.getParameter("title");
String cont = request.getParameter("cont");
cont = cont.replaceAll("\n", "<br>");
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/bbs", "root", "root");
conn.setAutoCommit(false);
String sql = "insert into article values (null, ?, ?, ?, ?, now(), 0)";
PreparedStatement pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, id);
pstmt.setInt(2, rootid);
pstmt.setString(3, title);
pstmt.setString(4, cont);
pstmt.executeUpdate();
Statement stmt = conn.createStatement();
stmt.executeUpdate("update article set isleaf = 1 where id = " + id);
conn.commit();
conn.setAutoCommit(true);//事务处理
stmt.close();
pstmt.close();
conn.close();
%>
请点击下面链接，跳转到<a href="articletree.jsp">主题列表</a>
login.jsp
<%@ page contentType="text/html; charset=gbk" pageEncoding="gbk" %>
<%
String action = request.getParameter("action");
if(action != null && action.equals("login")) {
String username = request.getParameter("username");
String password = request.getParameter("password");
if(username == null || !username.equals("admin")) {
out.println("username not correct!");
}else if(password == null || !password.equals("admin")) {
out.println("password not correct!");
}else {
session.setAttribute("admin", "true");
response.sendRedirect("articletree.jsp");
}
}
%>
<form action="Login.jsp" method="post">
<input type="hidden" name="action" value="login">
<table border="1px">
<tr><td>UserName:</td><td><input type="text" name="username"></td>
<tr><td>PassWord:</td><td><input type="password" name="password"></td>
<tr><td></td><td><input type="submit" value="submit"></td></tr>
</table>
</form>
post.jsp
<%@ page pageEncoding="GBK"%>
<%@ page import="java.sql.*"%>
<%
request.setCharacterEncoding("GBK");
String action = request.getParameter("action");
if (action != null && action.trim().equals("post")) {
String title = request.getParameter("title");
String cont = request.getParameter("cont");
cont = cont.replaceAll("\n", "<br>");
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/bbs", "root", "root");
conn.setAutoCommit(false);
int rootId = -1;
String sql = "insert into article values (null, ?, ?, ?, ?, now(), ?)";
PreparedStatement pstmt = conn.prepareStatement(sql,
Statement.RETURN_GENERATED_KEYS);
pstmt.setInt(1, 0);
pstmt.setInt(2, rootId);
pstmt.setString(3, title);
pstmt.setString(4, cont);
pstmt.setInt(5, 0);
pstmt.executeUpdate();
ResultSet rsKey = pstmt.getGeneratedKeys();
rsKey.next();
rootId = rsKey.getInt(1);
Statement stmt = conn.createStatement();
stmt.executeUpdate("update article set rootid = " + rootId
+ " where id = " + rootId);
conn.commit();
conn.setAutoCommit(true);
pstmt.close();
stmt.close();
conn.close();
response.sendRedirect("ShowArticleDetails.jsp");
}
%>
<body>
发表新贴
<form action="post.jsp" method="post">
<input type="hidden" name="action" value="post" />
<table>
<tr>
<td>
标题：
<input type="text" name="title">
</td>
</tr>
<tr>
<td>
内容：
<textarea name="cont" rows="15" cols="80"></textarea>
</td>
</tr>
<tr>
<td>
提交：
<input type="submit" value="submit" />
</td>
</tr>
</table>
</form>
</body>