为何将编译好的bean直接放在web-inf/classes中jsp页面就不能通过呢?
如题。
程序文件如下
//==================Circle.jsp=========================
<html>
<head>
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>新建网页 1</title>
</head>
<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import = "Circle" %>
<body>
<jsp:useBean id="gril" class="Circle" scope="page">
</jsp:useBean>
<%
gril.setRadius(100);
%>
<p> 圆的半径:</p><%=gril.getRadius()%>
<p> 圆的面积:</p><%=gril.area()%>
</body>
</html>
//=====================Circle.java====================
public class Circle
{
private int radius;
public Circle(){
radius=1;
}
public int getRadius(){
return radius;
}
public void setRadius(int newRadius){
radius=newRadius;
}
public double area(){
return Math.PI*radius*radius;
}
public double length(){
return 2.0*Math.PI*radius;
}
}