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csvの1行をダブルクォートで囲まれていない半角カンマで区切る

Java
CSV

Posted at 2020-09-30

BufferedReader br = （読み込むファイル）;
while((line = br.readLine()) != null){
//後ろに偶数個の「"」が現れる「,」にマッチする正規表現
Pattern cPattern = Pattern.compile(",(?=(([^\"]*\"){2})*[^\"]*$)");
//後ろに偶数個の「"」が現れる「,」で行を分割する
List<String> elem = Arrays.asList(cPattern.split(line, -1));
}

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