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"%>

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

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

<body>
    <%
        //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)
        Date time = new Date();
        int h = time.getHours();
        int m = time.getMinutes();
        int s = time.getSeconds();
        out.print("服务器时间：" + h + "时" + m + "分" + s + "秒" + "<br>");
        if (0 <= h && h <= 12) {
            out.print("早上好");
        } else if (13 <= h && h <= 18) {
            out.print("中午好");
        } else if (18 <= h && h <= 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"%>

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

<head>
<title>My JSP 'index.jsp' starting page</title>
<!-- 2. 使用声明方法,在页面调用该方法,判断2023是不是闰年 -->
<%!String RunNian(int year) {
        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
            return year + "是闰年";
        } else {
            return year + "不是闰年";
        }
    }%>
</head>

<body>
    <%
        String nian = RunNian(2023);
        out.print(nian);
    %>
</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"%>

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

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

<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%>" --%>
    <%
    for(int i=1;i<=5;i++){
    %>
    <hr width="<%=i*100 %>">
    <% 
    }
     %>
</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 @ 2022-03-12 13:02  吴静怡  阅读(15)  评论(0)  编辑  收藏  举报