读取数据库的留言板信息，分页显示出错
这个是我查看留言板的代码
<body>
<p align="center">所有访客留言</p>
<table width="732" height="*" border="1" align="center" cellpadding="1" cellspacing="0" bordercolordark="#ffffff" bordercolor="#ffffff" bordercolorlight="#0066ff">
<tr bgcolor="#CCCCFF">
<td height="22" colspan="5" align="center"><a href="index.jsp?choice=5.jsp">增加留言</a></td>
</tr>
<%
Connection con = DriverManager.getConnection("jdbc:odbc:banji");
Statement sql = con.createStatement();
ResultSet rs = sql.executeQuery("select * from message ORDER BY m_date DESC");
String color="";
String strpages=(String)request.getParameter("pages");
int pages=0;
if(strpages==null){
pages=0;
}else{
pages=Integer.parseInt(strpages);
}
rs.last();
int sqan=4,i=0,fcount=0;
int count=rs.getRow();
int countpage=count/sqan;
if(count%sqan>0) countpage=countpage+1;
if(pages<0) pages=0;
if(pages>countpage-1) pages=countpage-1;
fcount=pages*sqan+1;
int fpage=(count-fcount)/sqan+1;
out.print(fpage);
rs.absolute(fcount);
rs.previous();
while(rs.next()){
int id=rs.getInt("id");
String username=rs.getString("m_name");
String time=rs.getString("m_date");
String title=rs.getString("m_title");
String email=rs.getString("m_email");
String content=rs.getString("m_info");
if(content==null) content="";
if(color==""){
color="#ffffff";
}else{
color="";
}
%>
<tr bgcolor="<%=color%>">
<td align="center" width="86" height="22"><div align="left">留言人：</div></td>
<td align="center" width="158"><%=username%> </td>
<td height="22" colspan="2" align="left">留言主题：</td>
<td width="298" height="22" align="center"><%=title%> </td>
</tr>
<tr bgcolor="<%=color%>">
<td width="86" height="22" align="center"><div align="left">日期：</div></td>
<td width="158" height="22" align="center"><%=time%></td>
<td height="22" colspan="3" rowspan="3" align="left" valign="top"><%=content%> </td>
</tr>
<tr bgcolor="<%=color%>">
<td height="22" align="center"><div align="left">Email：</div></td>
<td height="22" align="center"><%=email%> </td>
</tr>
<tr bgcolor="<%=color%>">
<%
i++;if(i==sqan) break;
}
try{
con.close();
}catch(Exception e){
}
%>
</tr>
<tr align="right" bgcolor="#CCCCFF">
<td height="22" colspan="5">第<%=(pages+1)%>/<%=countpage%>页
<a href="view_ly.jsp?pages=<%=(pages-1)%>上一页</a>
<a href="view_ly.jsp?pages=<%=(pages+1)%>下一页</a></td>
</tr>
</table>
</body>
然后运行后报错：
org.apache.jasper.JasperException: An exception occurred processing JSP page /view_ly.jsp at line 27
24: }else{
25: pages=Integer.parseInt(strpages);
26: }
27: rs.last();
28: int sqan=4,i=0,fcount=0;
29: int count=rs.getRow();
30: int countpage=count/sqan;
高手帮我看看，改下代码，谢谢了
[解决办法]
rs.last();
没有用过，分页我一般会把数据库的内容取出来放到list集合里。
有多少条 list.size()就知道
我的异常网推荐解决方案：An exception occurred processing JSP page,http://www.myexception.cn/j2se/33144.html
