JSP第三次作业 

<%@ 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>

　　

posted @ 2021-03-30 17:20  Yik-  阅读(48)  评论(0)    收藏  举报