code291.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>el.jsp</title>
</head>
<body>
<form action="" method="post">
    key:<input type="text" name="key"><br>
    value: <input type="text" name="value"><br>
    <input type="submit" value="提交">
</form>
<hr>
key: ${param.key}<br>
value:${param.value}<br>
<jsp:useBean id="t" class="java.util.Date" scope="request"></jsp:useBean>
<br>
毫秒数：${t.time}
</body>
</html>