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"%>
<%
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>
    <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>
  <%
    Calendar c =Calendar.getInstance();
    int hour=c.get(Calendar.HOUR);
    out.print("现在的时间是 "+hour+"点");     //输出时间点
    if(hour>0 && hour<=12){
     %>
     上午好
     <%}
    else if(hour>12 && hour<=17){
       %>
     下午好
     <%}
    else if(hour>17 && hour<=24){
       %>
     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

 

<%@ 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>
    <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>
  <%
   int year=2023;               //<!--定义年份为2023年--!>
    out.print("年份为 "+year+"年");    
    if(year%4==0 && year%100!=0 || year%400==0){    
     %>
     该年份是闰年
     <%}else {%>
     该年份是平年
     <%}
     %>
     
    
  </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"%>
<%
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>
    <base href="<%=basePath%>">
    
    <title>My JSP 'A.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=100; i<=500; i+=100){           //<%--这是循环结构 --%>
    --%>
    <hr width="<%=i %>">
    <%
              }
               %>
  </body>
</html>

 

 

posted @ 2022-03-12 20:17  马瑞彬  阅读(19)  评论(0)  编辑  收藏  举报