JSP第二周作业
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> <head> <title></title> </head> <body> <% //java注释 Date d=new Date(); int hour=d.getHours(); //获取小时 int minute=d.getMinutes();//获取分钟 int second=d.getSeconds();//获取秒 out.print("您好,现在是:"+hour+":"+minute+":"+second+"<br><br>"); if(hour>=0&&hour<=12){ out.print("上午好"); }else if(hour>=13&&hour<=17){ out.print("下午好"); }else if(hour>=18&&hour<=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"%> <% 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> <title></title> <%!boolean i(int year) { if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) { return true; } else { return false; } }%> </head> <!-- HTML注释 --> <body> <% boolean j = i(2023); out.print(j); %> </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"%> <% 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> <title></title> </head> <body> <%-- JSP注释--%> <% for(int i=1;i<=5;i++){ %> <hr width="<%=i*100%>"> <%} %> <br> </body> </html>