JSP显示当前系统时间的四种方式

JSP显示当前系统时间的四种方式：

第一种java内置时间类实例化对象：

 

<%@ page language="java" import="java.util.*" pageEncoding="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 'time4.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>
    <%
    java.text.SimpleDateFormat simpleDateFormat = new java.text.SimpleDateFormat(  
     "yyyy-MM-dd HH:mm:ss");  
   java.util.Date currentTime = new java.util.Date();  
   String time = simpleDateFormat.format(currentTime).toString();
   out.println("当前时间为："+time);
     %>
     
  </body>
</html>

第二种方式使用JSP内置USEBEAN实例化时间类：

 

<%@ page language="java" import="java.util.*" pageEncoding="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>显示系统时间方法一：</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="time" class="java.util.Date"/>
    	现在时间：<%=time%>
  </body>
</html>

第三种方式使用JSP USEBEAN type与beanName配对使用：

 

<%@ page language="java" import="java.util.*" pageEncoding="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 'time2-useBean-type-beanName.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="time" type="java.io.Serializable" beanName="java.util.Date"/>
    	现在时间：<%=time%>
  </body>
</html>

第四种方式使用JSP setproperty设置属性：

 

<%@ page language="java" import="java.util.*" pageEncoding="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 'time3-setproperty.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:setproperty 实例<hr>
    <jsp:useBean id="time" class="java.util.Date">
    	<jsp:setProperty name="time" property="hours" param="hh"/>
    	<jsp:setProperty name="time" property="minutes" param="mm"/>
    	<jsp:setProperty name="time" property="seconds" param="ss"/>
    </jsp:useBean>
    <br>
    设置属性后的时间：${time} }
    <br>
    
  </body>
</html>

所有代码均能直接复制到MYECLIPSE2010

 

 

 

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本文作者：Joe.Smith

发表日期：2016年9月29日 
本文链接：http://blog.csdn.net/qq_26816591/article/details/52703122
来源：CSDN 
更多内容： JSP include指令与动作的相应时间对比

 

 

 






 

posted @ 2016-09-29 16:49  Joe.Smith  阅读(1952)  评论(0)  编辑  收藏  举报