java 中任意字符串或字符数的正则表达式构造

Question

I am trying to split data from a.csv file, however, some of the fields/columns also contain commas in between just like this

ABCKS,"ASK,ED","SDR,ED",2022-07-11,8011.0

cvbgb,"hfhvnf,rgr","dthd,chdf",2022-07-11,111.9

ABCKS,"ASK,ED","SDR,ED",2022-07-11,8011.0

hence, the.split(",") string method would create additional fields into the data.

I have tried

    if (aLine.contains("\"|,|\"")){

        String newString = aLine.replaceAll("\"|,|\"","|_|").replaceAll("\"", "");
        aList = Arrays.asList(newString.split(",", -1));

    }

It does not seem to work. Please, any help would be appreciated.

Answer 1

As Tim said above, a proper CSV reader would probably be better but a simple solution could be something like this: ,(?![A-Za-z]+") . Where you select every comma that is not followed by letters and a quotation. This satisfies your sample data but if there are edge cases it can easily break.