此段程序rs出现空指针的问题
试过如果把ResultSet rs=null;删掉，而在try里定义rs，则下面的rs显示未定义
希望大家帮忙解决下。
<%@ page contentType="text/html;charset=utf-8"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%>
<%
Connection conn=null;
ResultSet rs=null;
String active=request.getParameter("active");
if("yes".equals(active)){
String clothingkindname= request.getParameter("clothingkindname");
String sql = "select clothingID,clothingkindname,brand,standard,Origin,price from clothing where clothingkindname like '%"+clothingkindname+"%'";
try {
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
conn = DriverManager.getConnection("jdbc:mysql://localhost/clothingshopping?user=root&password=root&useUnicode=true&characterEncoding=UTF-8");
Statement stmt = conn.createStatement();
rs=stmt.executeQuery(sql);
System.out.println(sql);
System.out.println(rs);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
&
我在jsp页面查询到数据库中的一笔数据，并以table循环的形式显示，但需要下载保存成html格式，请问应该处理？代码有没有特殊要求？是不是需要特别的jar包？
你这是把报表保存为HTML格式，不知有什么用处，
要是 ......
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 52 in the jsp file: /vip_info.jsp
ÕË cannot be resolved
49: <table border="1& ......
