JSP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 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-------------
Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR);//获取小时
int minute = c.get(Calendar.MINUTE);//获取分钟
out.print("现在是" + hour + "时" + minute + "分钟");
out.print("<br>");
if (hour >= 0 && hour <= 12) {
out.print("上午好");
} else if (hour >= 13 && hour <= 17) {
out.print("下午好");
} else if (hour >= 18 && hour <= 23) {
out.print("晚上好");
}
%>
<%!int year(int year) {
return year;
}%>
<%
int year = 2023;
out.print(year(year));
if (year % 4 == 0 && year % 400 != 0 || year % 400 == 0) {
out.print("是闰年");
} else {
out.print("不是闰年");
}
%>
</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 'index.jsp' starting page</title>
</head>
<body>
<!-- HTML注释 -->
<%! int year(int year){
return year;
}
%>
<% int year=2023;
out.print(year(year));
if(year%4==0 && year%400!=0|| year%400==0){
out.print("是闰年");
}
else{
out.print("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>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%--jsp注释 --%>
<%
for (int i = 1; i <= 5; i++) {
%>
<hr width="<%=i * 100%>px" color="green">
<%
}
%>
</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
