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>
<head>
<title>获取当前时间</title>
</head>
<body>
<%
//java注释
Calendar d=Calendar.getInstance();
int hour=d.get(Calendar.HOUR);//获取小时
int minute=d.get(Calendar.MINUTE);//获取分钟
int second=d.get(Calendar.SECOND);//获取秒数
out.print("当前时间："+hour+":"+minute+":"+second+"<br><br>");//显示时间
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 language="java" import="java.util.*" pageEncoding="utf-8"%>
<%-- JSP注释 --%>
<%!
public boolean leap(int year){
boolean leap = false;
if((year %4 ==0 && year %100 !=0)||year %400==0)
leap = true;
return leap;
}
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>2023</title>
</head>
<body>
<%
if(leap(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%>"
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>hr</title>
</head>
<body>
<!-- HTML注释 -->
<%
for(int i=1;i<=5;i++){ %>
<hr width="<%=i*100%>px">
<% }%>
</body>
</html>
4.在第一题上加Java注释,第二题加html注释,第三题加jsp注释
