向大家请教一个问题：
Jsp中 <%! %>与 <% %>差别在哪儿？
书上说<%! %>里放的是声明，<% %>里放的是java片断，那我想问问，<%! %>中声明的，在，<% %>中能用吗？
我写了如下代码：
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.sql.*,java.io.*,java.util.*" %>
<html>
<head><title></title></head>
<body>
<%
String user = request.getParameter("n");
%><h2>Welcome!<%=user%><h2>
<center><h2>用户信息表<h2></center>
<hr><br>
<%
Connection c = null;
PreparedStatement pst = null;
ResultSet rs = null;
int pageNow = 1;
int pageCount = 0;
int pageSize = 3;
int rowCount = 0;
String pagenow = request.getParameter("pagenow");
if(pagenow != null)
{
pageNow = Integer.parseInt(pagenow);
}
Class.forName("oracle.jdbc.driver.OracleDriver");
c = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:MYDB","xiaoming","a123");
pst = c.prepareStatement("select count(*) from test");
rs = pst.executeQuery();
if(rs.next())
{
rowCount = rs.getInt(1);
}
pageCount = (rowCount%pageSize==0)?(rowCount/pageSize
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& ......
我写了个jsp页面，然后改动了一下，改动的内容就是在jsp页面的js函数里加了个alert()语句，但是我访问这个页面时，死活都是原来页面的内容，我加了很多alert函数还是没改动前的页面内容；tomcat重启了，也重新部署这 ......
