jsp第二周作业
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)
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
<%@ 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
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>
