bean:write之二访问HashMap中的值_bean:write输出map-优快云博客

本文链接：https://blog.youkuaiyun.com/mmm123lmj/article/details/4450241

本文通过一个具体的示例展示了如何使用Struts框架中的bean:write标签来访问并显示存储在Map对象中的数据。该示例涵盖了设置Map对象、将Map对象存储在pageContext中以及使用bean:write标签进行数据读取的过程。

<%@ page language="java" contentType="text/html; charset=GBK"
pageEncoding="GBK"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>

<!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=GBK">
<title>测试Bean属性的访问: bean:write标签可以访问Map中的值</title>
</head>
<body>
<%
java.util.Map objMap = new java.util.HashMap();
objMap.put("name", "Kobe Bryant");
objMap.put("age", new Integer(29));
objMap.put("salary", new java.math.BigDecimal("20000000"));
objMap.put("position", "Point Guard");
objMap.put("marry", Boolean.TRUE);
pageContext.setAttribute("objMap", objMap);
//request.setAttribute("objMap", objMap);
//request.getSession().setAttribute("objMap", objMap);
%>
<%--
<jsp:useBean id="map" class="java.util.HashMap" scope="page"></jsp:useBean>
<jsp:setProperty name="map" property="name" value="Kobe Bryant"/>
<jsp:getProperty name="map" property="name"/> 
--%>

NAME: <bean:write name="objMap" property="name"/> 
AGE: <bean:write name="objMap" property="age"/> 
SALARY: <bean:write name="objMap" property="salary"/> 
POSITION: <bean:write name="objMap" property="position"/> 
MARRY: <bean:write name="objMap" property="marry"/> 
</body>
</html>