第三次jsp作业

<%@ page contentType="text/html" language="java"
    import="java.util.regex.*" pageEncoding="utf-8"%>

<%!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;
    }%>
<html>
<body bgcolor=cyan>
    <p style="font-family:黑体;font-size:20">
        <br>我的菜单:</br>
        <%
            String str = "麻辣豆腐:20.6元,红烧肉:20.9元";
        %>
        <br><%=str%></br> <br> <b><i>消费总和:<%=getPriceSum(str)%></i> </b>
        </br> <br>我的菜单2:</br>
        <%
            str = "剁椒鱼头:62.9元,鸭:200元,虾:289元";
        %>
        <br><%=str%></br> <br> <b><i>消费总和:<%=getPriceSum(str)%></i> </b></br>
    </p>
</body>
</html>

 

posted @ 2021-03-17 20:01  计算机18  阅读(33)  评论(0编辑  收藏  举报