jsp2
1.p39 实验2 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 4 <!DOCTYPE HTML> 5 <html> 6 <head> 7 <title>My JSP 'index.jsp' starting page</title> 8 <meta charset = "utf-8"> 9 </head> 10 11 <body> 12 <br> 13 <% 14 Date date = new Date();/* 获取方法 */ 15 int hour = date.getHours(); 16 int minute = date.getMinutes(); 17 int second = date.getSeconds(); 18 out.print("当前时间:" + hour + ":" + minute + ":" + second + "<br>");//获取时间 19 if (hour >= 0 && hour <= 12) { 20 out.print("早上好"); 21 } else if (hour >= 13 && hour <= 17) { 22 out.print("中午好"); 23 } else if (hour >= 18 && hour <= 23) { 24 out.print("晚上好"); 25 } 26 %> 27 </body> 28 </html>
2. 使用声明方法,在页面调用该方法,判断2023是不是闰年
1 <%!String y(int year) { 2 if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) { 3 return "该年是闰年"; 4 } else { 5 return "该年不是闰年"; 6 } 7 }%> 8 <% 9 String year = y(2023); 10 out.print(year); 11 %>
3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
1 <%-- 循环输出--%> 2 <% 3 int i = 100; 4 %> 5 6 <% 7 for (i = 100; i <= 500; i = i + 100) { 8 %> 9 <hr width="<%=i%>px"> 10 <% 11 } 12 %>