用EL读取bean属性

最新推荐文章于 2022-03-28 20:48:08 发布

刘利新西安

最新推荐文章于 2022-03-28 20:48:08 发布

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分类专栏： Jsp

本文链接：https://blog.youkuaiyun.com/weiyanghuadi/article/details/9033583

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注意属性的第一个字母不要大写，否则Cannot find any information on property 'ZhouChang' in a bean of type 'liulixin.ChangFangXing'

<%@ page language="java" contentType="text/html; charset=utf-8"
	pageEncoding="utf-8"%>
<jsp:useBean id="haya" scope="session" class="liulixin.ChangFangXing"></jsp:useBean>
<!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=utf-8">
<title>西安小升初18802930979</title>
</head>
<body>
	<jsp:setProperty name="haya" property="chang" value="199" />
	<jsp:setProperty name="haya" property="kuan" value="100" />
	<jsp:setProperty name="haya" property="zhouChang"
		value="${2*haya.chang+2*haya.kuan}" />
	<%
		out.println(haya.getZhouChang());
	%>
	<p>
		用out.getProperty
		<jsp:getProperty name="haya" property="zhouChang"></jsp:getProperty>
	<p>下面用纯EL语言取值：${haya.zhouChang}</p>
</body>
</html>

package liulixin;

public class ChangFangXing {
	private int chang;
	public int getChang() {
		return chang;
	}
	public void setChang(int chang) {
		this.chang = chang;
	}
	public int getKuan() {
		return kuan;
	}
	public void setKuan(int kuan) {
		this.kuan = kuan;
	}
	public int getZhouChang() {
		return zhouChang;
	}
	public void setZhouChang(int zhouChang) {
		this.zhouChang = zhouChang;
	}
	private int kuan;
	private int zhouChang;

}