菜鸟问题,解答出来马上给问，在线急等!

[luyuly]

下面是我的一段代码:
<%@ page language="java" contentType="text/html;charset=GB2312"%>
<%@ page import="com.jspsmart.upload.*,com.zhang.nianshen.*,java.sql.*"%>
<% TuiXiuSH TuiXiuSH = new TuiXiuSH();
int dwdm = Integer.parseInt(request.getParameter("dwbh")); //上个页面传过来
TuiXiuSH.setDwdm(dwdm);
%>
<div align="center">
<p><font size="6" face="楷体_GB2312"><b>离退休人员年审表</b></font> </p>
<p align="left"><font face="宋体" size="3"> 单位代码：<%=TuiXiuSH.getDwdm()%> </font><font face="楷体_GB2312" size="3">                </font><font face="楷体_GB2312" size="6"><b>                  
</b></font><font face="宋体" size="3">年审开始时间：<%=TuiXiuSH.getAAH006()%></font></p>
<p align="left"><font face="宋体" size="3"> 单位类型：企业</font></p>
<table border="1" width="80%" height="85" bordercolor="#000000">
<tr>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">单位代码</td>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">个人编码</td>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">身份证号</td>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">姓名</td>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">离退休日期</td>
<td width="4%" align="center" height="29" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<p>每月离退休费
</td></tr>
<% ResultSet rs = TuiXiuSH.getTuiXiu();
while(rs.next()){%>
<tr>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<p align="center">  <%=rs.getInt("AAB001")%>
</td>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<div align="center"><%=rs.getInt("AAK002")%></div>
</td>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<div align="center"><%=rs.getString("AAK003")%></div>
</td>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<div align="center"><%=rs.getString("AAK004")%></div>
</td>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<div align="center"><%=rs.getString("AAK005")%></div>
</td>
<td height="44" bordercolor="#000000" bordercolorlight="#000000" bordercolordark="#000000">
<div align="center"><%=rs.getInt("AAK006")%></div>
</td>
</tr>
<%}%>
</table>
<p> </p>
<p align="left">        <a href="nszy.htm">返回</a>                      
<a href="dwns.htm">单位年审情况表</a>              
<a href="grjfjsns.htm">个人缴费基数审核表</a></p>
</div>
<div align="center">
<p> </p>
<p> </p>
</div>

系统无提示错误,只有一个错误页面.
type Exception report

message Internal Server Error

description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.

exception

java.lang.NullPointerException

诸位高手看看问题是出在了什么地方.

[fengjingyu]

int dwdm = Integer.parseInt(request.getParameter("dwbh").toString()); //上个页面传过来

[aku0708]

是空指针错误，你断点跟一下，看是哪里出错，别人也不能看出你的错误具体在哪一行

[luyuly]

有什么问题吗?

[Agassiwy]

恩，是的，dwbh估计是没有值，最好try一下，在页面上try也很正常的！

[kjah]

怀疑是dwbh没有传过来
还一个可能是TuiXiuSH.getTuiXiu();返回null;

[luyuly]

我测试了,可是依然还是有问题.