JS第二次作业

1. 显示当前时间,并输出上午(0-12)好,下午好(13-17),晚上好(18-23)

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1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <%
 3     String path = request.getContextPath();
 4     String basePath = request.getScheme() + "://"
 5             + request.getServerName() + ":" + request.getServerPort()
 6             + path + "/";
 7 %>
 8
 9 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
10 <html>
11 <head>
25 </head>
26
27 <body>
28     <%
29     //Java注释
30     //Calendar 提供了一个类方法 getInstance,以获得此类型的一个通用的对象。
31     //Calendar 的 getInstance 方法返回一个 Calendar 对象。
32         Calendar c = Calendar.getInstance();
33         int year = c.get(Calendar.YEAR);//获取年
34         int month = c.get(Calendar.MONTH) + 1;//获取月份
35         int date = c.get(Calendar.DATE);//获取天数
36         int hour = c.get(Calendar.HOUR_OF_DAY);//获取小时
37         int minute = c.get(Calendar.MINUTE);//获取分钟
38         int second = c.get(Calendar.SECOND);//获取秒
39         String str = "";
40         if (hour >= 0 && hour <= 12) {
41             str = "上午好!";
42         } else if (hour > 12 && hour <= 17) {
43             str = "中午好!";
44         } else if (hour >= 13 && hour <= 18) {
45             str = "下午好!";
46         } else if (hour > 18 && hour <= 23) {
47             str = "晚上好!";
48         }
49     %>
50     <table border="1" align="center">
51
52         <tr align="center">
53             <td>现在时间为:<%=year%>-<%=month%>-<%=date%>  <%=hour%>:<%=minute%>:<%=second%></td>
54         </tr>
55         <tr align="center">
56             <td><%=str%></td>
57         </tr>
58
59     </table>
60
61 </body>
62
63 </html>

  

 

2. 使用声明方法,在页面调用该方法,判断2023是不是闰年

 

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     
  </head>
  <!--HTML注释语句-->
  <body>
      <h1>判断闰年</h1>
    <%!
    String panduan(int a){
        if((a%4==0&&a%100!=0)||a%400==0){
            return "闰年";
        }else{
            return "平年";
        }
    }
     %>
     <%
     int a=2023;
     out.print("2023为"+panduan(a));
      %>
  </body>
</html>

  

 

3.表达式+程序段 循环输出5条hr,长度分别为100px-500px

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1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 3 <html>
 4 <head>
 5 <title>My JSP 'index.jsp' starting page</title>
 6 </head>
 7
 8 <body>
 9 <%--jsp注释 --%>
10     <%
11         for (int i = 1; i <= 5; i++) {
12     %>
13     <hr width="<%=i * 100%>px" size="<%=i%>" color="blue">
14     <%
15         }
16     %>
17     <br />
18
19
20 </body>
21 </html>

  

posted @ 2022-03-13 17:58  医不活  阅读(31)  评论(0编辑  收藏  举报