1. <%--
    2.   Created by IntelliJ IDEA.
    3.   User: 23839
    4.   Date: 2021/11/22
    5.   Time: 8:37
    6.   To change this template use File | Settings | File Templates.
    7. --%>
    8. <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    9. <%@ page import="java.util.ArrayList" %>
    10. <%@ page import="com.zcc.pojo.*"%>
    11. <html>
    12. <head>
    13.     <title>El表达式显示</title>
    14. </head>
    15. <body>
    16.     <b><%= ((User)request.getAttribute("user")).toString()%></b>
    17.     <b><%= ((ArrayList)request.getAttribute("uList")).get(1).toString()%></b><br>
    18.     <b><%= ((ArrayList)request.getAttribute("uList")).get(0).toString()%></b><br>
    19.     <b><%= ((ArrayList)request.getAttribute("uList")).size()%></b>
    20.     <b>我知道这个El怎么使用的！${str}</b>
    21.     <b>${uList[0]}</b>
    22.     <b>${uList[1]}</b>
    23.     <b>${uList[2]}</b>
    25. <%
    26.     pageContext.setAttribute("hello","helloPagContext");
    27.     request.setAttribute("hello","helloRequest");
    28.     session.setAttribute("hello","helloSession");
    29.     application.setAttribute("hello","helloApplication");
    30. %>
    32. ${sessionScope.hello}
    33. ${requestScope.hello}
    34. ${pageScope.hello}
    35. ${applicationScope.hello}
    37. ${1+2}--${1*2}--${1/2}--${1%3}
    38. <br>${empty str}
    39. <hr>${header.entrySet()}
    40. <hr>${headerValues["Accept-Language"][0]}
    42. <hr>${cookie}
    43. <hr>${cookie.JSESSIONID}
    44. <hr>${cookie.JSESSIONID.name}
    45. <hr>${cookie.JSESSIONID.value}
    46. </body>
    47. </html>