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                        /JAVA遇見HTML——JSP篇

為什么我這邊出現The requested resource is not available.的錯誤

<%@?page?language="java"?import="java.util.*"?contentType="text/html;?charset=utf-8"%>
<%
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>
????<h1>out內置對象</h1>
????<%?
???????out.println("<h2>靜夜思</h2>");
???????out.println("床前明月光<br>");
???????out.println("疑是地上霜<br>");
????????out.flush();
???????//out.clear();//這里會拋出異常。
???????out.clearBuffer();//這里不會拋出異常。
???????out.println("舉頭望明月<br>");
???????out.println("低頭思故鄉<br>");
????
????%>
????????緩沖區大?。?lt;%=out.getBufferSize()?%>byte<br>
????????緩沖區剩余大?。?lt;%=out.getRemaining()?%>byte<br>
???????是否自動清空緩沖區：<%=out.isAutoFlush()?%><br>????
??</body>
</html>

保存然后網頁打不開，問題描述：The requested resource is not available.

打開其他目錄下的jsp頁面是可以的