第二周jsp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"%> <%!public int continueSum(int start, int end) { int sum = 0; for (int i = start; i <= end; i++) sum = sum + i; return sum; }%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> var userTime = new Date(); var hour = userTime.getHours(); var minute = userTime.getMinutes(); document.write("浏览器时间:"+hour + ":" + minute); </script> <% Date d = new Date(); int hour = d.getHours(); int minute = d.getMinutes(); out.print("服务器时间:"+hour + ":" + minute); if (hour >= 0 && hour <= 12) { out.print("上午好"); } else if (hour >= 13 && hour <= 17) { out.print("下午好"); } else { 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> </head> <body> <%! public void run(int year){ if((year%4==0&&year%100!=0)||(year%400==0)){ System.out.print(year+"是闰年"); } else{ System.out.print(year+"不是闰年"); } } %> <% int year=2023; run(year); %> </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%>"
<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> <%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
第一题注释 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%!public int continueSum(int start, int end) { int sum = 0; for (int i = start; i <= end; i++) sum = sum + i; return sum; }%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> var userTime = new Date(); var hour = userTime.getHours(); var minute = userTime.getMinutes(); document.write("浏览器时间:"+hour + ":" + minute); </script> <% /* Date d = new Date(); int hour = d.getHours(); int minute = d.getMinutes(); out.print("服务器时间:"+hour + ":" + minute); if (hour >= 0 && hour <= 12) { out.print("上午好"); } else if (hour >= 13 && hour <= 17) { out.print("下午好"); } else { out.print("晚上好"); } */ %> </body> </html>
第二题
<%@ 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> <!-- 这个是HTML注释 --> <body> <%! public void run(int year){ if((year%4==0&&year%100!=0)||(year%400==0)){ System.out.print(year+"是闰年"); } else{ System.out.print(year+"不是闰年"); } } %> <% int year=2023; run(year); %> </body> </html>
第三题
<%@ 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> <%-- 这个是jsp的注释 --%> <%for(int i=1;i<=5;i++){ %> <hr width="<%=i*100%>"> <% } %> </body> </html>
