<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ page contentType="text/html" %>
<%@ page import="java.util.regex.Pattern" %>
<%@ page import="java.util.regex.Matcher" %>
 
 
<%!
    public double getPriceSum(String input){
        Pattern pattern;
        Matcher matcher;
        String regex="-?[0-9][0-9]*[.]?[0-9]";
        pattern=Pattern.compile(regex);
        matcher=pattern.matcher(input);
        double sum=0;
        while(matcher.find()){
        String str=matcher.group();
        sum+=Double.parseDouble(str);
        }
        return sum;
    }
 %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<br>张三的菜单</br>
<%
    String str="麻婆豆腐：18元，红烧肉：26元";
 %>
 <br><%= str %></br>
 <br><b><i>消费：<%=getPriceSum(str) %></i></b></br>
 <br>李四的菜单</br>
<%
    String strr="辣子鸡：50元，北京烤鸭：109元，油焖大虾：90元";
 %>
 <br><%= strr %></br>
 <br><b><i>消费：<%=getPriceSum(strr) %></i></b></br>
   
</html>

　　

 

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
 
<%@ page import ="java.text.SimpleDateFormat" %>
 
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<%
    Date d=new Date();
    SimpleDateFormat a=new SimpleDateFormat();
    String now=a.format(d);
     
 %>
<br>
<%
    out.print(now);
 %>
   
 
</html>

　　

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
 <h1>显示访问网页的日期时间<br>(服务器的时间日期)</h1>
<%@ include file="index.jsp" %>
</body>
 
</html>