jsp第二次作业
1.输出当前时间，并根据时间输出早上好，下午好，晚上好
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'zy.jsp' starting page</title>
</head>
<body>
<%
Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH) + 1;
int date = c.get(Calendar.DATE);
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
int second = c.get(Calendar.SECOND);
String x = "";
if (hour >= 0 && hour <= 12) {
x = "上午好！";
} else if (hour >= 13 && hour <= 17) {
x = "下午好！";
} else if (hour >= 18 && hour <= 23) {
x = "晚上好！";
}
%>
<p>
当前时间为：<%=year%>/<%=month%>/<%=date%>
<%=hour%>:<%=minute%>:<%=second%><br>
</p>
<p><%=x%></p> <br>
</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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'zy.jsp' starting page</title>
<%!boolean a(int year) {
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
return true;
} else {
return false;
}
}%>
</head>
<body>
<%
boolean b = a(2023);
out.print(b);
%>
</body>
</html>
3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
<%@ 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 'zy.jsp' starting page</title>
</head>
<body>
<%
for (int i = 1; i <= 5; i++) {
%>
<%--JSP注释 --%>
<hr width="<%=i * 100%>px" size="5" color="green">
<%
}
%>
</body>
</html>
