读取由定界符分隔的texfile的内容

Question

“约翰”，“ 100.00”，“ 200.00”如何读取文本文件的内容，然后在引号下打印字符串。输出应为Jhon 100.00 200.00String CUSTOMER, CURRENT, NEW;    Scanner sc = new Scanner(str);    sc.useDelimiter(",");    while(sc.hasNext()){        CUSTOMER = sc.next();        CURRENT = sc.next();        NEW = sc.next();           System.out.println("" + CUSTOMER + " " + CURRENT +              " " + NEW);            }          sc.close();如何将标记与引号分开。我得到的上述代码的输出是“ Jhon”“ 100.00”“ 200.00”

Answer 1

您可以通过以下命令获得所需的输出：

public static void main(String[] args) {

    Pattern p = Pattern.compile(".*?\\\"(.*?)\\\".*?");

    Matcher m = p.matcher("\"John\",\"100.00\",\"200.00\"");

    while (m.find()) {

        System.out.println(m.group(1));

    }

}

解释

.*?   - anything

\\\" - quote (escaped)

(.*?) - anything (captured)

\\\" - another quote

.*?  - anything

输出

John

100.00

200.00