jsp第二周作业

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>

<%

//java注释

Calendar y=Calendar.getInstance();

int year=y.get(Calendar.YEAR);

int month=y.get(Calendar.MONTH)+1;

int day=y.get(Calendar.DAY_OF_MONTH);

int hour=y.get(Calendar.HOUR_OF_DAY);

int minute=y.get(Calendar.MINUTE);

if(hour<12){

out.print("早上好~");}

else if(hour==12){

out.print("中午好~");

}

else{

out.print("下午好~");}

 %>

<h2>

用户在<%=year %>/<%=month %>/<%=day %>

<%=hour %>:<%=minute %>使用浏览器

</h2>

  </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 'MyJsp.jsp' starting page</title>

  </head>

  <!--html注释 -->

  <body>

   <%!String zuoye(int year) {

   if(year%4==0&&year%100!=0||year%400==0){

   return year + "闰年";

   }else{return year + "平年";} }%>

<%

String yearr=zuoye(2021);

out.print(yearr);

 %>

  </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 'MyJsp1.jsp' starting page</title>

  </head>

  <%--jsp注释 --%>

  <body>

<%for(int i=1;i<5;i++){ %>

<hr width="<%=i*100%>px">

<%

}

 %>

  </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

巴特西

jsp第二周作业

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