在String regex java中删除逗号后的空格

Question

我有一个包含逗号分隔数据的字符串：

1,  What is your name ?,  Male,  Cell no
2,  From which country you belong,  USA,  Greetings

我正在使用这个正则表达式，但它不起作用：

 str.replace(/\s/g, "")

我可以将字符串转换为：

1,What is your name ?,Male,Cell no
2,From which country you belong,USA,Greetings

Answer 1

正如您在评论中提到的，您希望在将值写入 CSV 之前对其进行修剪。 这可以通过设置来完成withTrim在-option CSVFormat ：

CSVFormat csvFormat = CSVFormat.DEFAULT.withTrim();

try (FileWriter writer = new FileWriter("file.txt", false);
     CSVPrinter csvPrinter = new CSVPrinter(writer, csvFormat)) {
    csvPrinter.printRecord("1", "  What is your name ?", "  Male", "  Cell no");
    csvPrinter.printRecord("2", "  From which country you belong", "  USA", "  Greetings");
}

执行后file.txt内容：

1,What is your name ?,Male,Cell no
2,From which country you belong,USA,Greetings