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>My JSP 'index.jsp' starting page</title>

</head>
    
<body>
     <%
    //java注释
    Date d=new Date();
    int h=d.getHours(); //获取小时
    int m=d.getMinutes();//获取分钟
    int s=d.getSeconds();//获取秒
    out.print("当前时间:"+h+":"+m+":"+s+"<br>");
    if(h>=0&&h<=12){
    out.print("早上好");
    }else if(h>=13&&h<=17){
    out.print("下午好");
    }else if(h>=18&&h<=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

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"%>
<%!
    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(2023);
  out.print(f);
   %> 
  </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 'index1.jsp' starting page</title>
</head>
<body>
    <%--jsp注释 --%>
    <%
        for (int i = 1; i <= 5; i++) {
    %>
    <hr width="<%=i * 100%>px">
    <%
        }
    %>

</body>
</html>

 

posted @ 2022-03-09 11:39  张秋菊  阅读(43)  评论(0编辑  收藏  举报