第二周
1
<%@page import="java.text.SimpleDateFormat"%>
<%@ 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>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<p style="font-family:黑体;font-size:24">
<br>显示当前时间<br>
</p>
<p>
<%
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");
}
%>
</p>
</body>
</html>
2
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!
boolean sf(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=sf(2022);
out.print(f);
%>
</body>
</html>
3
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index1.jsp' starting page</title>
</head>
<body>
<%--jsp注释 --%>
<%
for (int i = 1; i <= 5; i++) {
%>
<hr width="<%=i * 100%>px">
<%
}
%>
</body>
</html>
