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>
    <%
      Date d=new Date();
      int hour =d.getHours();
      int min =d.getMinutes();
      out.print("服务器时间：<br>"+hour+":"+min+":");
      if(hour>=0&&hour<=12){
          out.print("早上好!");
      }if(hour>=13&&hour<=17){
          out.print("下午好！");
      }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="org.omg.CORBA.PUBLIC_MEMBER"%>
<%@ 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 y(int year){
         if((year%4==0&&year%100!=0)||year%400==0){
         System.out.print(year+"该年是闰年");
     }else{
         System.out.print(year+"该年是平年");
     }
  }
      %>
      <% y(2023);%>
  </body>
</html>

 

3.表达式+程序段   循环输出5条hr,长度分别为100px-500px

 

<%@page import="org.omg.CORBA.PUBLIC_MEMBER"%>
<%@ 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 import="org.omg.CORBA.PUBLIC_MEMBER"%>
<%@ 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>
     <%
       Date d=new Date();
    /*int hour =d.getHours();
      int min =d.getMinutes();
      out.print("服务器时间：<br>"+hour+":"+min+":");
      if(hour>=0&&hour<=12){
          out.print("早上好!");
      }if(hour>=13&&hour<=17){
          out.print("下午好！");
      }if(hour>=18&&hour<=23){
          out.print("晚上好！");
      }
    */
     %>
  </body>
</html>

 

 

 

第二题注释

 

<%@page import="org.omg.CORBA.PUBLIC_MEMBER"%>
<%@ 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 y(int year){
         if((year%4==0&&year%100!=0)||year%400==0){
         System.out.print(year+"该年是闰年");
     }else{
         System.out.print(year+"该年是平年");
     }
  }
      %>
      <% y(2023);%>
      <!-- 这是一个Html的注释 -->
  </body>
</html>

 

 

 

第三题注释

 

<%@page import="org.omg.CORBA.PUBLIC_MEMBER"%>
<%@ 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%>">
     <%} %>
     <%--这是jsp的注释 --%>
  </body>
</html>

 

posted @ 2022-03-09 20:10  星星邮寄者  阅读(24)  评论(0)  编辑  收藏  举报