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"%>
<%
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>
<%
Date d = new Date(); //获取小时
out.println(d.getHours());//输出得到的小时<br> %>
<%
if(d.getHours()>=0 && d.getHours()<=12){ %>
<h2>上午好</h2>
<% } else if(d.getHours()>=13&&d.getHours()<=17){ %>
<h2>下午好</h2>
<% }else{ %>
<h2>晚上好</h2>
<%} %>
<br>
 </body>

 

 


2. 使用声明方法,在页面调用该方法,判断2023是不是闰年

<body>

   <!-- 定义方法judy -->
    <%!int judy(int year){
    if (year%4==0&year%400==0){
    return 0;
    }
     
    else{
     
    return 1;
    }}
     
    %>
     
    <%
    int year=2023;
    int i=judy(year);
    if (i==0){
   out.println("是闰年");
    }
    else{
  out.println("不是闰年");
    }
     
     
     %>
  </body>

 

 


3.表达式+程序段 循环输出5条hr,长度分别为100px-500px
<hr width="<%=i%>"

<!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">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
  <% 
  for(int i=1;i<=5;i++){ %>
  <hr width="<%=i*100%>px"><%--jsp注释 --%>

  <%  }%>
  </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

 

posted @ 2022-03-13 21:00  计算机1904黄尚炜  阅读(25)  评论(0)  编辑  收藏  举报