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.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">

</head>

<body>

 显示当前时间 


<%
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)+"");//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
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+"/";
%>
<%!
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>

<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
boolean x=isRun(2018);
out.print(x);
%>
</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"%>
<%
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>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
for (int i = 1; i <= 5; i++) {
%>
<%--JSP注释 --%>
<hr width="<%=i * 100%>px" size="15" color="red">
<%
}
%>
</body>
</html>

posted @ 2022-03-12 20:50 计算机1903庞斯文阅读(90) 评论(0) 收藏举报

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