jsp第二周作业
1.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="com.sun.xml.internal.txw2.Document"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</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("当前时间:"+hour+":"+minute+":"+second+"<br><br>"); if(hour>=0&&hour<=12){ out.print("早上好"); }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 import="com.sun.xml.internal.txw2.Document"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%! boolean isRun(int year){ if(year%4==0&&year%100!=0||year%400==0){ return true; } return false; } %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- HTML注释 --> <title>My JSP 'index1.jsp' starting page</title> </head> <body> <% boolean f=isRun(2023); out.print(f); %> </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 import="com.sun.xml.internal.txw2.Document"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index2.jsp' starting page</title> </head> <body> <%--jsp注释 --%> <% for(int i=1;i<=5;i++){ %> <hr width="<%=i*100%>px" color="red"> <% }%> </body> </html>