这几天刚学jsp,做了一个小页面，就是一个简单的计算器，在<% %>里面申明变量并赋值后，在另一个<% %>中却不能访问，这是为什么呢？
源代码如下：Java code:
<%@ page language="java" import="java.util.*" pageEncoding="GB2312"%>
<%
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<title>My JSP 'MyJsp.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<head>
<script language="javascript">
<!--
function checkNum()
{
var num1=cal.num1.value;
var num2=cal.num2.value;
if(num1==""||num2=="")
{
window.alert("运算数不能为空！");
return false;
}
else
{
var msg="";
if(Math.round(num1)!=num1)
msg+="第一个数类型错误！";
if(Math.round(num2)!=num2)
msg+="第二个数类型�
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& ......
