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 xs=d.getHours(); //获取小时
    int fz=d.getMinutes();//获取分钟
    int m=d.getSeconds();//获取秒
    out.print("当前时间："+xs+":"+fz+":"+m+"<br><br>");
    if(xs>=0&&xs<=12){
    out.print("早上好");
    }else if(xs>=13&&xs<=17){
    out.print("下午好");
    }else if(xs>=18&&xs<=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 wr(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 'index.jsp' starting page</title>
    
  </head>
  
  <body>
   <%
   boolean t=wr(2023); 
   out.print(t);%>
  </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 j=1;j<=5;j++){ %>
  <hr width="<%=j*100%>px" >
  <% }%>
    
  </body>
</html>

 

posted @ 2022-03-09 11:40  曲蔓特  阅读(15)  评论(0)  编辑  收藏  举报