List<Article> articles = new ArrayList<Article>();出错如何解决
日期：2014-05-20 浏览次数：20823 次
List<Article> articles = new ArrayList<Article>();出错怎么解决？
<%@ page pageEncoding="GB18030"%>
<%@ page import="java.sql.*, com.bjsxt.bbs.*, java.util.*"%>
<%!
private void tree(List<Article> articles, Connection conn, int id, int grade) {
String sql = "select * from article where pid = " + id;
Statement stmt = DB.createStmt(conn);
ResultSet rs = DB.executeQuery(stmt, sql);
try {
while(rs.next()) {
Article a = new Article();
a.initFromRs(rs);
a.setGrade(grade);
articles.add(a);
if(!a.isLeaf()) {
tree(articles, conn, a.getId(), grade + 1);
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(stmt);
}
}
%>
<%
List<Article> articles = new ArrayList<Article>();
Connection conn = DB.getConn();
tree(articles, conn, 0, 0);
DB.close(conn);
%>
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<%@ page pageEncoding="GB18030"%>
<%@ page import="java.sql.*, com.bjsxt.bbs.*, java.util.*"%>
<%!
private void tree(List<Article> articles, Connection conn, int id, int grade) {
String sql = "select * from article where pid = " + id;
Statement stmt = DB.createStmt(conn);
ResultSet rs = DB.executeQuery(stmt, sql);
try {
while(rs.next()) {
Article a = new Article();
a.initFromRs(rs);
a.setGrade(grade);
articles.add(a);
if(!a.isLeaf()) {
tree(articles, conn, a.getId(), grade + 1);
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DB.close(rs);
DB.close(stmt);
}
}
%>
<%
List<Article> articles = new ArrayList<Article>();
Connection conn = DB.getConn();
tree(articles, conn, 0, 0);
DB.close(conn);
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Java语言*初级版</title>
<meta http-equiv="content-type" content="text/html; charset=utf8">
<link rel="stylesheet" type="text/css" href="images/style.css" title="Integrated Styles">
<script language="JavaScript" type="text/javascript" src="images/global.js"></script>
<link rel="alternate" type="application/rss+xml" title="RSS" href="http://bbs.chinajavaworld.com/rss/rssmessages.jspa?forumID=20">
<script language="JavaScript" type="text/javascript" src="images/common.js"></script>
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody>
<tr>
<td width="40%"><img src="images/header-stretch.gif" alt="" border="0" height="57" width="100%">
</td>
<td width="1%"><img src="images/header-right.gif" alt="" height="57" border="0"></td>
</tr>
</tbody>
</table>
<br>
<div id="jive-forumpage">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody>
<tr valign="top">
<td width="98%"><p class="jive-breadcrumbs">论坛: Java语言*初级版
(模仿)</p>
<p class="jive-description"> 探讨Java语言基础知识,基本语法等 大家一起交流 共同提高！谢绝任何形式的广告 </p>
</td>
</tr>
</tbody>
</table>
<div class="jive-buttons">
<table summary="Buttons" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="jive-icon"><a href="post.jsp"><img src="images/post-16x16.gif" alt="发表新主题" border="0" height="16" width="16"></a></td>
<td class="jive-icon-label"><a id="jive-post-thread" href="post.jsp">发表新主题</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&isBest=1"></a></td>
</tr>
</tbody>
</table>
</div>
<br>
<table border="0" cellpadding="3" cellspacing="0" width="100%">
<tbody>
<tr valign="top">
<td><span class="nobreak"> 页:
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