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)
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme() + "://" 5 + request.getServerName() + ":" + request.getServerPort() 6 + path + "/"; 7 %> 8 9 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 10 <html> 11 <head> 12 <base href="<%=basePath%>"> 13 14 <title>My JSP 'two.jsp' starting page</title> 15 16 <meta http-equiv="pragma" content="no-cache"> 17 <meta http-equiv="cache-control" content="no-cache"> 18 <meta http-equiv="expires" content="0"> 19 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> 20 <meta http-equiv="description" content="This is my page"> 21 <!-- 22 <link rel="stylesheet" type="text/css" href="styles.css"> 23 --> 24 25 </head> 26 27 <body> 28 <% 29 //Java注释 30 //Calendar 提供了一个类方法 getInstance，以获得此类型的一个通用的对象。 31 //Calendar 的 getInstance 方法返回一个 Calendar 对象。 32 Calendar c = Calendar.getInstance(); 33 int year = c.get(Calendar.YEAR);//获取年 34 int month = c.get(Calendar.MONTH) + 1;//获取月份 35 int date = c.get(Calendar.DATE);//获取天数 36 int hour = c.get(Calendar.HOUR_OF_DAY);//获取小时 37 int minute = c.get(Calendar.MINUTE);//获取分钟 38 int second = c.get(Calendar.SECOND);//获取秒 39 String str = ""; 40 if (hour >= 0 && hour <= 12) { 41 str = "上午好！"; 42 } else if (hour > 12 && hour <= 17) { 43 str = "中午好！"; 44 } else if (hour >= 13 && hour <= 18) { 45 str = "下午好！"; 46 } else if (hour > 18 && hour <= 23) { 47 str = "晚上好！"; 48 } 49 %> 50 <table border="1" align="center"> 51 52 <tr align="center"> 53 <td>现在时间为:<%=year%>-<%=month%>-<%=date%> <%=hour%>:<%=minute%>:<%=second%></td> 54 </tr> 55 <tr align="center"> 56 <td><%=str%></td> 57 </tr> 58 59 </table> 60 61 </body> 62 63 </html>
2. 使用声明方法,在页面调用该方法,判断2023是不是闰年
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <%!public boolean nian(int year) { 3 if (year % 4 == 0 || year % 100 != 0 && year % 400 == 0) { 4 return true; 5 } 6 return false; 7 }%> 8 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 9 <html> 10 <head> 11 <title>My JSP 'MyJsp.jsp' starting page</title> 12 </head> 13 <!-- HTML注释 --> 14 <body> 15 <% 16 boolean b = nian(2023); 17 out.print(b); 18 %> 19 </body> 20 21 </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%>"
1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 3 <html> 4 <head> 5 <title>My JSP 'index.jsp' starting page</title> 6 </head> 7 8 <body> 9 <%--jsp注释 --%> 10 <% 11 for (int i = 1; i <= 5; i++) { 12 %> 13 <hr width="<%=i * 100%>px" size="<%=i%>" color="blue"> 14 <% 15 } 16 %> 17 <br /> 18 19 20 </body> 21 </html>
