TOMCAT 出错，又来麻烦大家了.......
2007-8-14 18:03:23 org.apache.jasper.runtime.PageContextImpl release
警告: Internal error flushing the buffer in release()
参照别人的代码拼凑的个JSP网页，控制台出现上述错误。
代码如下：麻烦大家帮找找问题，顺便看下有哪些不合理的地方？鞠躬谢谢~
----------------------------------
<%@ page contentType= "text/html; charset=gb2312 "%>
<%@ page import= "java.sql.* "%>
<%@ page import= "java.util.* "%>
<%@ page import= "java.util.Date "%>
<%@ page import= "java.text.* "%>
<%@ include file= "inc/conn.jsp "%>
<%
//request.setCharacterEncoding( "GB2312 ") ;
%>
<html>
<head>
<title> </title>
</head>
<body>
<%
String name=null;
name = (String)session.getAttribute( "name ");
if(name== " "||name==null)
{
out.print( "你必须登录才行噢 ");
%>
<center>
<a href= "register.jsp "> 注册 </A>
<a href= "login.jsp "> 登录 </a>
</center>
<%
}
else
{
out.print( "Hi, "+ name + " 欢迎您回来！ ");
%>
<a href= "logout.jsp "> 注销 </a>
<hr />
<br>
<br>
<table width= "760 " border=1 cellspacing=0 bordercolordark=#CCCCCC bordercolor=#ffffff align= "center ">
<tr>
<center>
<td width= "6% "> ID </td>
<td width= "10% "> 姓名 </td>
<td width= "9% "> 妮称 </td>
<td width= "7% "> 密码 </td>
<td width= "15% "> Email </td>
<td width= "5% "> 性别 </td>
<td width= "32% "> 登陆时间 </td>
<td width= "16% "> IP </td>
</center>
</tr>
<%
try
{
String sql= "select * from staff order by id DESC ";
ResultSet rs=stmt.executeQuery(sql);
int intPageSize; //一页显示的记录数
int intRowCount; //记录总数
int intPageCount; //总页数
int intPage; //待显示页码
String strPage;
int i;
//设置一页显示的记录数
intPageSize = 10;
//取得待显示页码
strPage = request.getParameter( "pages ");
if(strPage==null){
//表明在QueryString中没有page这一个参数，此时显示第一页数据
intPage = 1;
}
else
{
//将字符串转换成整型
intPage = Integer.parseInt(strPage);
if(intPage <1){ intPage = 1;}
}
//获取记录总数
rs.last();
intRowCount = rs.getRow();
//计算总页数
intPageCount =(intRowCount+intPageSize-1) / intPageSize;
//调整待显示的页码
if(intPage> intPageCount) intPage = intPageCount;
if(intPageCount> 0){
//将记录指针定位到待显示页的第一条记录上
rs.absolute((intPage-1) * intPageSize+1);
//显示数据
i = 0;
//if (rs.next()){
while(i < intPageSize && !rs.isAfterLast()){
int id=rs.getInt( "id ");
String uuser=rs.getString( "name ");
String nicheng=rs.getString( "nickname ");
String pass=rs.getString( "password ");
String email=rs.getString( "email ");
String sex=rs.getString( "sex ");
String time=rs.getString( "lasttime ");
String ip=rs.getString( "ip ");
%>
<tr> <center>
<td> <%=id%> </td>
<td> <%=uuser%> </td>
<td> <%=nicheng%> </td>
<td> <%=pass%> </td>
<td> <%=email%> </td>
<td> <%=sex%> </td>
<td> <%=time%> </td>
<td> <%=ip%> </td>
</center>
</tr>
<%
}
rs.next();
i++;
}
rs.close();
stmt.close();
conn.close();
%>
</table>
<table width= "760 " border= "0 " cellspacing= "0 " cellpadding= "0 " align= "center ">
<tr>
<td align= "left " width= "126 ">
<%out.print( "共 <font color=red> "+intRowCount+ " </font> 个主题 <font color=red> "+intPageSize+ " </font> /页 共 <font color=red> "+intPageCount+ " </font> 页 ");%>
当前第 <font color=red> <%=intPage%> </font> 页 </td>
<td width= "634 " height= "23 " align= "right ">
<%if(intPage <=1){%>
首页
<%}else{%>
<a href= "main.jsp?pages=1 "> 首页 </a>
<%}%>
<%if(intPage> 1){%>
<a href= "main.jsp?pages= <%=intPage-1%> "> 上一页 </a>
<%}else{%>
上一页
<%
}%>
<%if(intPage <intPageCount){%>
<a href= "main.jsp?pages= <%=intPage+1%> "> 下一页 </a>
<%}else{%>
下一页
<%
}%>
<%if(intPageCount <=1||intPage==intPageCount){%>
尾页
<%}else{%>
<a href= "main.jsp?pages= <%=intPageCount%> "> 尾页 </a>
<%}%>
</td>
</tr>
</table>
<%
}
catch(Exception e)
{
throw(e);
}
}
%>
</body>
</html>
------解决方案--------------------
代码的风格不好，开始的时候，一定要养成好的编程风格！要把视图和控制，还有模型分开，不要把jsp写入很多java代码，我帮你看了一下，修改如下：
<%@ page contentType= "text/html; charset=gb2312 "%>
<%@ page import= "java.sql.* "%>
<%@ page import= "java.util.* "%>
<%@ page import= "java.util.Date "%>
<%@ page import= "java.text.* "%>
<%@ include file= "inc/conn.jsp "%>
<%
//request.setCharacterEncoding( "GB2312 ") ;
%>
<html>
<head>
<title> </title>
</head>
<body>
<%
String name=null;
name = (String)session.getAttribute( "name ");
if(name== " "||name==null)
{
out.print( "你必须登录才行噢 ");
%>
<center>
<a href= "register.jsp "> 注册 </A>
<a href= "login.jsp "> 登录 </a>
</center>
<%
}
else
{
out.print( "Hi, "+ name + " 欢迎您回来！ ");
%>
<a href= "logout.jsp "> 注销 </a>
<hr />
<br/>
<br/>
<table width= "760 " border=1 cellspacing=0 bordercolordark=#CCCCCC bordercolor=#ffffff align= "center ">
<tr align= "center ">
<td width= "6% "> ID </td>
<td width= "10% "> 姓名 </td>
<td width= "9% "> 妮称 </td>
<td width= "7% "> 密码 </td>
<td width= "15% "> Email </td>
<td width= "5% "> 性别 </td>
<td width= "32% "> 登陆时间 </td>
<td width= "16% "> IP </td>
</tr>
<%
try
{
Connection con = DriverManager.getConnection( "DatabaseURL ");
Statement stmt = con.createStatement();
String sql= "select * from staff order by id DESC ";
ResultSet rs=stmt.executeQuery(sql);
int intPageSize; //一页显示的记录数
int intRowCount; //记录总数
int intPageCount; //总页数
int intPage; //待显示页码
String strPage;
int i;
//设置一页显示的记录数
intPageSize = 10;
//取得待显示页码
strPage = request.getParameter( "pages ");
if(strPage==null){
//表明在QueryString中没有page这一个参数，此时显示第一页数据
intPage = 1;
}
else
{
//将字符串转换成整型
intPage = Integer.parseInt(strPage);
if(intPage <1){ intPage = 1;}
}
//获取记录总数
rs.last();
intRowCount = rs.getRow();
//计算总页数
intPageCount =(intRowCount+intPageSize-1) / intPageSize;
//调整待显示的页码
if(intPage> intPageCount) intPage = intPageCount;
if(intPageCount> 0){
//将记录指针定位到待显示页的第一条记录上
rs.absolute((intPage-1) * intPageSize+1);
//显示数据
i = 0;
//if (rs.next()){
while(i < intPageSize && !rs.isAfterLast()){
int id=rs.getInt( "id ");
String uuser=rs.getString( "name ");
String nicheng=rs.getString( "nickname ");
String pass=rs.getString( "password ");
String email=rs.getString( "email ");
String sex=rs.getString( "sex ");
String time=rs.getString( "lasttime ");
String ip=rs.getString( "ip ");
%>
<tr align= "center ">
<td> <%=id%> </td>
<td> <%=uuser%> </td>
<td> <%=nicheng%> </td>
<td> <%=pass%> </td>
<td> <%=email%> </td>
<td> <%=sex%> </td>
<td> <%=time%> </td>
<td> <%=ip%> </td>
</tr>
<%
}
rs.next();
i++;
}
rs.close();
stmt.close();
con.close();
%>
</table>
<table width= "760 " border= "0 " cellspacing= "0 " cellpadding= "0 " align= "center ">
<tr>
<td align= "left " width= "126 ">
<%out.print( "共 <font color=red> "+intRowCount+ " </font> 个主题 <font color=red> "+intPageSize+ " </font> /页 共 <font color=red> "+intPageCount+ " </font> 页 ");%>
当前第 <font color=red> <%=intPage%> </font> 页 </td>
<td width= "634 " height= "23 " align= "right ">
<%if(intPage <=1){%>
首页
<%}else{%>
<a href= "main.jsp?pages=1 "> 首页 </a>
<%}%>
<%if(intPage> 1){%>
<a href= "main.jsp?pages= <%=intPage-1%> "> 上一页 </a>
<%}else{%>
上一页
<%
}%>
<%if(intPage <intPageCount){%>
<a href= "main.jsp?pages= <%=intPage+1%> "> 下一页 </a>
<%}else{%>
下一页
<%
}%>
<%if(intPageCount <=1||intPage==intPageCount){%>
尾页
<%}else{%>
<a href= "main.jsp?pages= <%=intPageCount%> "> 尾页 </a>
<%}%>
</td>
</tr>
</table>
<%
}
catch(Exception e)
{
throw(e);
}
}
%>
</body>
</html>
[解决办法]
不同的页用自己的连接对象,而且需要时再去创建,不用是关闭.
不要公共的使用一个conn.jsp里创建的conn对象.
不要把PHP的那种包含页的思想拿到JSP中.
[解决办法]
你发的太多了，把核心的发了就好了
