public class TestPageContext {
public void getSomething(PageContext page){
ServletRequest request = page.getRequest();
String username = request.getParameter("username");
System.out.println(username);
}
}
<%@page import="com.huawei.page.TestPageContext"%>
<%@page import="com.sun.corba.se.impl.orb.ParserTable.TestAcceptor1"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>This is my JSP 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">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
This is my JSP page. <br>
<%
TestPageContext context = new TestPageContext();
context.getSomething(pageContext);
%>
</body>
</html>
原文：http://www.cnblogs.com/hwgok/p/5823952.html