"java.util.HashMap"%>
"java.util.Map"%>
"java.util.ArrayList"%>
"java.util.List"%>
"java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"
import="hah.*"
errorPage="common/zz.jsp"
%>
"common/zz.jsp" --%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title heretitle>
head>
<body>
String name1="name1";
int name2=111;
int[] a=new int[3];
//int xx=10/0;//
//out.write(xx);
a[1]=3;
Student student=new Student("ss",22);
request.setAttribute("name1", name1);
session.setAttribute("name2", name2);
request.setAttribute("intx", a);
session.setAttribute("student",student);
List list=new ArrayList();
list.add(new Student("11",111));
list.add(new Student("22",222));
list.add(new Student("33",333));
request.setAttribute("listx",list);
Map<String,Student> map=new HashMap<String,Student>();
map.put("1", new Student("11",111));
map.put("2", new Student("22",222));
map.put("2", new Student("33",333));
pageContext.setAttribute("mapx",map);
%>
"true" %> EL ,TRUE .FALSE .JSP2.0 EL 。 --%>
"name2")%>
"name")%>
--%>
EL ：
${name1 }
${sessionScope.name2 }
${intx[1] }
${student.name } - ${student.age }
${student["name"] } -${student["age"] } <br/>
"student")).getName()%> --%>
${listx[2]["name"] } - ${listx[2].age }
<br/>
for(int i=0;i
get(i).getName() +" | "+list.get(i).getAge()%>
<br/>
${listx[1]["name"] }---${listx[1].age }
0] ( get( ) )
((List)pageContext.findAttribute("list")).get(0)
--%>
<br/>
${mapx['1']["name"] }
<br/>
3>=2 }
${
10!=3 }
${
true||false} --%>
String haha="";
request.setAttribute("haha", haha);
%>
null：${haha==null }
： ${haha=="" }<br/>
：${haha==null||haha=="" }
：
${empty haha }
body>
html>