我觉得我没有输错什么，和老师的代码也一样，可是我运行的时候总是提示404错误
<%@ page language="java" import="java.text.SimpleDateFormat,java.util.*" contentType="text/html; charset=utf-8
pageEncoding="utf-8" errorPage="exception.jsp" %>
<!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>Insert title here</title>
</head>
<body>
<h1>session内置对象</h1>
<hr>
<%
System.out.println(100/0);
%>
</body>
</html>
