jsp第三次作业 

<%@ 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="gray">
    <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>

 

posted @ 2021-03-28 21:48  Day丶T  阅读(55)  评论(0)    收藏  举报