EL表达式(二)

来源：互联网发布：优酷出品的网络大电影编辑：程序博客网时间：2024/06/11 02:06

<%@page import="org.apache.jasper.tagplugins.jstl.core.Param"%>
<%@page import="com.test.Customer"%>
<%@page import="java.util.Date"%>
<%@page import="java.util.List"%>
<%@page import="java.util.ArrayList"%>
<%@page language="java" contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
${param.score>60?"及格":"不及格"} 
<%
List<String> names=new ArrayList<String>();
names.add("abc");
request.setAttribute("names", names);
%>
names is Empty:${empty requestScope.names} 
names is Empty:${empty requestScope.names2} 
pageContext隐含对象: 
contextPath:${pageContext.request.contextPath} 
sessionId:${pageContext.session.id} 
sessionAttributeNames:${pageContext.session.attributeNames} 
time:${applicationScope.time.time} 
score:${param.score} 
<%-- score:<%=request.getParameter("sore") %> --%>
name:${paramValues.name} 
name:${paramValues.name[0]} 
name:${paramValues.name[1]} 
name:${paramValues.name[2]} 

score:${param.score+11} 
score:<%=request.getParameter("score")+11%> 
<%
Customer cust2=new Customer();
cust2.setAge(21);
request.setAttribute("customer", cust2);
%>
age:${customer.age} 
age:${requestScope.customer.age} 
age:${sessionScope.customer.age} 
age:${sessionScope.customer["age"]} 
<%-- age:<%
Customer customer=(Customer)session.getAttribute("customer");
out.print(customer.getAge());
%> --%>
<%
Customer customer=new Customer();
customer.setName("ATGUIGU");
session.setAttribute("com.atguigu.com",customer);
%>
 
name:${sessionScope.com.atguigu.com.customer.name} 
name:${sessionScope["com.atguigu.com.customer"].name} 
<%
application.setAttribute("time", new Date());
%>
</body>
</html>

0 0