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                        /JAVA遇見HTML——JSP篇

為什么我的<jsp:useBean ......>中的class報錯。Unable to compile class for JSP:

package?Math;

public?class?Box?{
	private?int?length;
	private?int?width;
	private?int?height;
	
	public?Box()?{
	}

	public?int?getLength()?{
		return?length;
	}

	public?void?setLength(int?length)?{
		this.length?=?length;
	}

	public?int?getWidth()?{
		return?width;
	}

	public?void?setWidth(int?width)?{
		this.width?=?width;
	}

	public?int?getHeight()?{
		return?height;
	}

	public?void?setHeight(int?height)?{
		this.height?=?height;
	}
}

JSP中：

<%@?page?language="java"?import="java.util.*"?contentType="text/html;?charset=utf-8"%>
<%@?page?import="Math.Box"?%>
<%
String?path?=?request.getContextPath();
String?basePath?=?request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html>
??<head>
????<base?href="<%=basePath%>">
????
????<title>My?JSP?'index.jsp'?starting?page</title>
	<meta?http-equiv="pragma"?content="no-cache">
	<meta?http-equiv="cache-control"?content="no-cache">
	<meta?http-equiv="expires"?content="0">????
	<meta?http-equiv="keywords"?content="keyword1,keyword2,keyword3">
	<meta?http-equiv="description"?content="This?is?my?page">
	<!--
	<link?rel="stylesheet"?type="text/css"?href="styles.css">
	-->
??</head>
??
??<body>
??	<jsp:useBean?id="box"?class="Math.Box"?scope="page"></jsp:useBean>
??	<h1>普通方式顯示javabeans</h1>
		

??</body>
</html>

它在useBean的class報錯。Unable to compile class for JSP: