/*
* javaBean代码
*/
package bean;
public class Box {
double length;
double width;
double height;
public Box()
{
length=0;
width=0;
height=0;
}
public double getLength() {
return length;
}
public void setLength(double length) {
this.length = length;
}
public double getWidth() {
return width;
}
public void setWidth(double width) {
this.width = width;
}
public double getHeight() {
return height;
}
public void setHeight(double height) {
this.height = height;
}
public double getArea()
{
return length*width*2+length*height*2+width*height*2;
}
public double getVolum()
{
return length*width*height;
}
}
<!-- useBox.jsp文件 -->
<%@ page language="java" contentType="text/html; charset=gb2312" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>用EL使用JavaBean</title>
</head>
<body>
<%
bean.Box box=new bean.Box();
box.setLength(40);
box.setWidth(20);
box.setHeight(30);
request.setAttribute("box", box);
%>
盒子的表面积为:${box.area }<br>
<c:set var="volum" value="volum" />
盒子的容积为:${box[volum] }<br>
</body>
</html>
JSP简单练习-EL表达式操作JavaBean,布布扣,bubuko.com
时间： 2024-08-24 17:36:07