JSP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)
<%@ 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>显示时间</title> </head> <body> <% //java注释 Date d=new Date(); int hour=d.getHours();//获取小时 int minute=d.getMinutes(); int second=d.getSeconds(); if(hour>=0&&hour<=12){ out.print("当前时间为"+hour+":"+minute+":"+second+"上午好"); }else if(hour>12&&hour<=17){ out.print("当前时间为"+hour+":"+minute+":"+second+"下午好"); }else{ out.print("当前时间为"+hour+":"+minute+":"+second+"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
闰年:能被4整除但不能被100整除或者能被400整除
<%@ 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>判断是否为闰年</title> </head> <body> <%! public String getYear(int year){ String z=null; if(year%4==0&&year%100!=0||year%400==0){ z="是闰年"; }else{ z="不是闰年"; } return z; }%> <!-- html注释 --> <% out.print("2023年"+getYear(2023)); %> </body> </html>
3.表达式+程序段 循环输出5条<hr>,长度分别为100px-500px
<%@ 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>长度</title> </head> <body> <%--jsp注释 --%><% for(int i=1;i<=5;i++){%> <hr width="<%=i*100%>px"> <%} %> </body> </html>