<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@page import="java.sql.*" %>
<%!
String str = "";// html
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();
rs = stmt.executeQuery("select * from article where pid =" + id);
while(rs.next()) {//
str += "<tr><td>" + rs.getInt("id") + "</td><td>" + preStr +
rs.getString("title") + "</td>" +
"</tr>";
if(rs.getInt("isleaf") != 0) {//
tree(conn, rs.getInt("id"), level+1);
}
}
} catch(SQLException e) {
e.printStackTrace();
} finally {
try{
if(null != rs) {
rs.close();
rs = null;
}
if(null != stmt) {
stmt.close();
stmt = null;
}
} catch(SQLException e) {
e.printStackTrace();
}
}
}
%>
<%
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/bbs?user=root&password=root");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from article where pid = 0");
while(rs.next()) {//
str += "<tr><td>" + rs.getInt("id") + "</td><td>" +
rs.getString("title") + "</td>" +
"</tr>";
if(rs.getInt("isleaf") != 0) {//
tree(conn, rs.getInt("id"), 1);
}
}
rs.close();
stmt.close();
conn.close();
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<title>ShowArticleTree</title>
</head>
<body>
<table border="1">
<!-- -->
<%=str %>
</table>
</body>
</html>