JSP第二次作业
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).
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <body> <%!%> <% Date d = new Date(); int x=d.getHours(); int y=d.getMinutes(); int z=d.getSeconds(); out.print("当前时间:"+x+":"+y+":"+z+"<br>"); if (x >= 0 && x <= 12) { out.print("上午好!"); } else if (x >= 13 && x <= 17) { out.print("中午好!"); } else if (x >= 18 && x <= 23) { out.print("晚上好!"); }
</body> %> </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> <title></title> </head> <body> <%!public String panduan(int y) { if (y % 4 == 0 && y % 100 != 0) { return "闰年"; } else { return "平年"; } }%> <% out.print(panduan(2023)); %> </body> </html>
3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
<hr width="<%=i%>"
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> </head> <body> <%--jsp注释 --%> <% for (int i = 1; i <= 5; i++) { %> <hr width="<%=i * 100%>px"> <% } %> </html>