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" %>
<%@ page contentType="text/html" %>


<!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 hour = d.getHours(); //获取小时
        int minute = d.getMinutes();//获取分钟
        int second = d.getSeconds();//获取秒
        if (hour >= 0 && hour <= 12) {
            out.print("当前时间是" + hour + ":" + minute + ":" + second + ":"
                    + "上午好");
        } else if (hour > 12 && hour <= 17) {
            out.print("当前时间是" + hour + ":" + minute + ":" + second + ":"
                    + "中午好");
        } else if (hour > 17 && hour <= 23) {
            out.print("当前时间是" + hour + ":" + minute + ":" + second + ":"
                    + "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" %>
<%@ page contentType="text/html" %>

<%!public String year(int y) {
        String a = null;
        if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0) {
            a = "是闰年";
        } else {
            a = "不是闰年";
        }
        return a;
    }%>


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

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

</head>
<body>
    <%
    out.print("2023年"+year(2023));
    %>

</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" %>
<%@ page contentType="text/html" %>


<!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 i = 100; i <= 500;) {
            i = i + 100;
    %>
    <hr width="<%=i%>px">
    <%
        }
    %>



</body>
</html>

 

 



posted @ 2022-03-12 12:57  请叫我妖玉大侠  阅读(23)  评论(0编辑  收藏  举报