求助，已经改了好几遍，也看了好几遍了，就职不知道哪里错了~~【java吧】

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求助，已经改了好几遍，也看了好几遍了，就职不知道哪里错了~~

Tonmcat报错代码如下：
type Exception report
message Unable to compile class for JSP:
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 7 in the jsp file: /article.jspsql cannot be resolved to a variable
4:private void tree(Set<Article> articles,Connection conn,int id ,int grsde) {
5: String aql = "select * from article where pid =" + id;
6: Statement stm = DB.createStm(conn);
7: ResultSet rs = DB.createRs(stm,sql);
8: try{
9: while(rs.next()){
10: Article a = new Article();
An error occurred at line: 19 in the jsp file: /article.jspgrade cannot be resolved to a variable
16: a.setPdate(rs.getTimestamp("pdate"));
17: articles.add(a);18: if(!a.isLeaf()) {
19: tree(articles , conn , a.getId() , grade+1);
20: }
21: }
22: }catch(SQLException e) {
An error occurred at line: 105 in the jsp file: /article.jsparticles cannot be resolved
102: <tbody>
103:
104: <%
105: for(Iterator<Article> it = articles.iterator();it.hasNext();) {
106: Article a = it.next();
107: %>
108: <tr class="jive-even">

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IP属地:安徽

1楼2014-03-28 14:47回复

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来自Android客户端2楼2014-03-28 14:49

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全部代码如下：
<%@page pageEncoding="gbk"%>
<%@page import="java.sql.* , com.wzl.bbs.*,java.util.*" %>
<%!
private void tree(Set<Article> articles,Connection conn,int id ,int grsde) {
String aql = "select * from article where pid =" + id;
Statement stm = DB.createStm(conn);
ResultSet rs = DB.createRs(stm,sql);
try{
while(rs.next()){
Article a = new Article();
a.setId(rs.getInt("id"));
a.setPid(rs.getInt("pid"));
a.setRootid(rs.getInt("rootid"));
a.setTitle(rs.getString("title"));
a.setLeaf(rs.getInt("isLeaf") == 0 ? true : false);
a.setPdate(rs.getTimestamp("pdate"));
articles.add(a);
if(!a.isLeaf()) {
tree(articles , conn , a.getId() , grade+1);
}
}
}catch(SQLException e) {
e.printStackTrace();
}
}
%>
Set<Article> articles = new HashSeA<Article>();
Connection conn = DB.createCon();
tree(articles,conn,0,0)
DB.close(conn);
<%
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Java|Java世界_中文论坛|ChinaJavaWorld技术论坛 : Java语言*初级版</title>
<meta http-equiv="content-type" content="text/html; charset=GBK">
<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="140"><a href="http://bbs.chinajavaworld.com/index.jspa"><img src="images/header-left.gif" alt="Java|Java世界_中文论坛|ChinaJavaWorld技术论坛" border="0"></a></td>
<td><img src="images/header-stretch.gif" alt="" border="0" height="57" width="100%"></td>
<td width="1%"><img src="images/header-right.gif" alt="" 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="http://bbs.chinajavaworld.com/post%21default.jspa?forumID=20"><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="http://bbs.chinajavaworld.com/post%21default.jspa?forumID=20">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:
1,316 - <span class="jive-paginator"> [ <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=0&isBest=0">上一页</a> | <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=0&isBest=0" class="">1</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=25&isBest=0" class="jive-current">2</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=50&isBest=0" class="">3</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=75&isBest=0" class="">4</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=100&isBest=0" class="">5</a> <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=125&isBest=0" class="">6</a> | <a href="http://bbs.chinajavaworld.com/forum.jspa?forumID=20&start=50&isBest=0">下一页</a> ] </span> </span> </td>
</tr>
</tbody>
</table>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tbody>
<tr valign="top">
<td width="99%"><div class="jive-thread-list">
<div class="jive-table">
<table summary="List of threads" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr>
<th class="jive-first" colspan="3"> 主题 </th>
<th class="jive-author"> <nobr> 作者
  </nobr> </th>
<th class="jive-view-count"> <nobr> 浏览
  </nobr> </th>
<th class="jive-msg-count" nowrap="nowrap"> 回复 </th>
<th class="jive-last" nowrap="nowrap"> 最新帖子 </th>
</tr>
</thead>

IP属地:安徽

3楼2014-03-28 14:50

<tbody>
<%
for(Iterator<Article> it = articles.iterator();it.hasNext();) {
Article a = it.next();
%>
<tr class="jive-even">
<td class="jive-first" nowrap="nowrap" width="1%"><div class="jive-bullet"> <img src="images/read-16x16.gif" alt="已读" border="0" height="16" width="16">

</div></td>
<td nowrap="nowrap" width="1%"> 
 </td>
<td class="jive-thread-name" width="95%"><a id="jive-thread-1" href="http://bbs.chinajavaworld.com/thread.jspa?threadID=744236&tstart=25">初学java遇一难题！！望大家能帮忙一下谢谢了</a></td>
<td class="jive-author" nowrap="nowrap" width="1%"><span class=""> <a href="http://bbs.chinajavaworld.com/profile.jspa?userID=226030">fei870407</a> </span></td>
<td class="jive-view-count" width="1%"> 104</td>
<td class="jive-msg-count" width="1%"> 5</td>
<td class="jive-last" nowrap="nowrap" width="1%"><div class="jive-last-post"> 2007-9-13 上午9:31 <br>
by: <a href="http://bbs.chinajavaworld.com/thread.jspa?messageID=780182#780182" title="jingjiangjun" style="">jingjiangjun »</a> </div></td>
</tr>
<tr class="jive-odd">
<td class="jive-first" nowrap="nowrap" width="1%"><div class="jive-bullet"> <img src="images/read-16x16.gif" alt="已读" border="0" height="16" width="16">

</div></td>
<td nowrap="nowrap" width="1%"> 
 </td>
<td class="jive-thread-name" width="95%"><a id="jive-thread-2" href="http://bbs.chinajavaworld.com/thread.jspa?threadID=744234&tstart=25">请兄弟们指点下那里错误，，，</a></td>
<td class="jive-author" nowrap="nowrap" width="1%"><span class=""> <a href="http://bbs.chinajavaworld.com/profile.jspa?userID=226028">403783154</a> </span></td>
<td class="jive-view-count" width="1%"> 52</td>
<td class="jive-msg-count" width="1%"> 2</td>
<td class="jive-last" nowrap="nowrap" width="1%"><div class="jive-last-post"> 2007-9-13 上午8:40 <br>
by: <a href="http://bbs.chinajavaworld.com/thread.jspa?messageID=780172#780172" title="downing114" style="">downing114 »</a> </div></td>
</tr>
<%
}
%>
</tbody>
</table>
</div>
</div>
<div class="jive-legend"></div></td>
</tr>
</tbody>
</table>
<br>
<br>
</div>
</body>
</html>

IP属地:安徽

4楼2014-03-28 14:50

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求助，已经改了好几遍，也看了好几遍了，就职不知道哪里错了~~

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