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