<%@ page language="java" contentType="text/html" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.util.regex.Pattern"%>
<%@ page import ="java.util.regex.Matcher"%>
<!DOCTYPE html>
<html>
<head>
</head>
<%!
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;
}
%>
<body bgcolor=cyan>
<p style ="font-family:黑体；font-size:20">
<br>张三的菜单：</br>
<%String str= "麻婆豆腐：20.6元，红烧肉：68.9元";
%>
<br><%=str%></br>
<br><b><i>消费总和：<%=getPriceSum(str) %></i></b></br>
<br>李四的菜单：</br>
<%str= "剁椒鱼头：62.9元，烤鸭：199元，红焖大虾：289.9元";
%>
<br><%=str %></br>
<br><b><i>消费总和：<%=getPriceSum(str) %></i></b></br>
</p>
</body>
</html>
