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 import="java.util.Date" %> <%@ page import="java.text.SimpleDateFormat" %> <%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/3/21 Time: 16:13 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> 当前时间为： <% Date d = new Date();//获取系统时间 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置时间格式 out.print(sdf.format(d)+"</br>");//输出系统时间 int h = d.getHours();//得到系统小时数 if(h>=0&&h<=12){//判断时间范围并输出相应的问候语 out.print("上午好"); }else if(h>=13&&h<=17){ out.print("下午好"); }else{ 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
<!--判断是否为闰年-->
<%! boolean isRun(int year){ if (year %4==0&& year%100!=0||year %400==0){ return true; } else{ return false; } } %> <%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/3/21 Time: 16:13 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body>
<!--调用isRun方法--> <% if(isRun(2023)){ out.print("2023年是闰年"); }else{ out.print("2023年不是闰年"); } %> </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%>"
<!--设置全局变量-->
<%! int i = 0; %> <%-- Created by IntelliJ IDEA. User: 97442 Date: 2022/3/21 Time: 16:13 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <% for(i = 100; i <= 500; i += 100){ %> <hr width="<%=i%>px"/> <%} %> </body> </html>
