<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>                  	
    	
    	
        	
    	
    	
              
测试EL表达式
	
    
	
普通字符串
	hello(jsp脚本):<%request.getAttribute("hello");%>
	hello(EL表达式使用$和{}):${hello}
	hello(el表达式,el的隐含对象：pageScope,requestScope,sessionScope,applicationScope
如果没有指定scope，则它的搜索顺序为	pageScope ----> applicationScope):${requestScope.hello }
		
结构
	姓名：${user.userName}(与对象的方法(get)相关)
	年龄：${user.age }
	所属组：${user.group.name }
		
输出map
	mapvalue.key1:${mapvalue.key1 }
	mapvalue.key2:${mapvalue.key2 }
		
数组输出，采用[]和下标
	atrarray[2]:${astarray[1] }
		
输出对象数组
	userarray[3].username:${users[2].username }
		
输出list,采用[]和下标
	userlist[5].username:${userlist[4].username }
		
el表达式对运算符的支持
	1 + 2 = ${1+2 }
	10 / 5 = ${10/5 }
	10 / 5 = ${10 div 5 }
	10 % 3 = ${10%3 }
	10 % 3 = ${10 mod 3 }
	<--		==    eq		!=    ne		<     lt		>     gt		<=    le		>=    ge		&&    and		||    or		!     not		/     div		%     mod	-->		
测试empty
	value1:${not empty value1 }
	value2:${empty value1 }
	value3:${empty value1 }
	value4:${empty value1 }