<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8" %> <html> <head> <title>主页</title> </head> <body> <table border="1"> <caption>page作用域迭代</caption> <tr> <td>键</td> <td>值</td> </tr> <c:forEach items="${pageScope}" var="oneAttr"> <tr> <td>${oneAttr.key}</td> <td>${oneAttr.value}</td> </tr> </c:forEach> </table> <hr/> <table border="1"> <caption>request作用域迭代</caption> <tr> <td>键</td> <td>值</td> </tr> <c:forEach items="${requestScope}" var="oneAttr"> <tr> <td>${oneAttr.key}</td> <td>${oneAttr.value}</td> </tr> </c:forEach> </table> <hr/> <table border="1"> <caption>session作用域迭代</caption> <tr> <td>键</td> <td>值</td> </tr> <c:forEach items="${sessionScope}" var="oneAttr"> <tr> <td>${oneAttr.key}</td> <td>${oneAttr.value}</td> </tr> </c:forEach> </table> <hr/> <table border="1"> <caption>application作用域迭代</caption> <tr> <td>键</td> <td>值</td> </tr> <c:forEach items="${applicationScope}" var="oneAttr"> <tr> <td>${oneAttr.key}</td> <td>${oneAttr.value}</td> </tr> </c:forEach> </table> <hr/> </body> </html>