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>
  </head>
  <body>
    <% 
Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR);						//将获去的数值赋值给HOUR
int minute = c.get(Calendar.MINUTE);
int second = c.get(Calendar.SECOND);
	out.print("时间为"+hour+":"+minute+":"+second+"<br>");
if(hour>=0 && hour<=12){
out.print("上午好");
}else if(hour>=13 && hour<=17){
out.print("下午好");}else if(hour>=18 && hour<=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 import="com.sun.xml.internal.txw2.Document"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!
    boolean isRun(int year){
    if(year%4==0&&year%100!=0||year%400==0){
        return true; 
    }
    return false;
}  
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head> 
  <!-- HTML注释 -->
    <title>My JSP 'index1.jsp' starting page</title>
  </head>
  <body>
  <%
  boolean f=isRun(2023);
  out.print(f);
   %> 
  </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>
  </head>
  <body>
  <%--循环输出100-500px的hr --%>
 <%for(int i=1;i<6;i++) {
 %>																				
 	<hr width="<%=i*100%>px">
 	<% out.print("<dr>");%>
 	<%} %>
  </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 @ 2022-03-13 19:56  丁朝明  阅读(37)  评论(0)    收藏  举报