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"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  <title></title>    
  </head>  
  <body>
   <%
    //java注释
    Date d=new Date();
    int hour=d.getHours(); //获取小时
    int minute=d.getMinutes();//获取分钟
    int second=d.getSeconds();//获取秒
    out.print("您好，现在是："+hour+":"+minute+":"+second+"<br><br>");
    if(hour>=0&&hour<=12){
    out.print("上午好");
    }else if(hour>=13&&hour<=17){
    out.print("下午好");
    }else if(hour>=18&&hour<=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

<%@ 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></title>
<%!boolean i(int year) {
        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
            return true;
        } else {
            return false;
        }
    }%>
</head>
<!-- HTML注释 -->
<body>
    <%
        boolean j = i(2023);
        out.print(j);
    %>
</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>
<title></title>
</head>
<body>
<%-- JSP注释--%>
 <% for(int i=1;i<=5;i++){ %>
 <hr width="<%=i*100%>">
 <%} %>
 <br>
  </body>
</html>

 

posted @ 2022-03-12 17:21  刘源丰  阅读(25)  评论(0)  编辑  收藏  举报