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)

 

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!public int continueSum(int start, int end) {
        int sum = 0;
        for (int i = start; i <= end; i++)
            sum = sum + i;
        return sum;
    }%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

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

</head>

<body>
    <script type="text/javascript">
        var userTime = new Date();
        var hour = userTime.getHours();
        var minute = userTime.getMinutes();
        document.write("浏览器时间:"+hour + ":" + minute);
        
    </script>
    <%
        Date d = new Date();
        int hour = d.getHours();
        int minute = d.getMinutes();
out.print("服务器时间:"+hour + ":" + minute);
        if (hour >= 0 && hour <= 12) {
            out.print("上午好");
        } else if (hour >= 13 && hour <= 17) {
            out.print("下午好");
        } else {
            out.print("晚上好");
        }
    %>
</body>
</html>
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2. 使用声明方法,在页面调用该方法,判断2023是不是闰年

 

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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
     
  </head>
  <!--HTML注释语句-->
  <body>
      <h1>判断闰年</h1>
    <%!
    String panduan(int a){
        if((a%4==0&&a%100!=0)||a%400==0){
            return "闰年";
        }else{
            return "平年";
        }
    }
     %>
     <%
     int a=2023;
     out.print("2023为"+panduan(a));
      %>
  </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%>"

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<%@ page import="java.util.Date" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<body>
<h2>

 

</h2>
</body>
<%--jsp注释--%>
<%
    for (int i = 100; i <= 500; i = i+100) {
%>
<hr width="<%=i%>" color="red">
<%
    }
%>
</html>
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posted @ 2022-03-13 18:26  郭蕴杰  阅读(28)  评论(0)    收藏  举报