<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ 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>
<head>
</head>
<body bgcolor="pink">
<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";
%>
<br><%=str%><br> <br> <b><i>消费总额:<%=getPriceSum(str)%></i><br>
</b> <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>消费总额:<%=getPriceSum(str)%></i><br>
</b>
</p>
</body>
</html>
