删除字符串正则表达式java中逗号后的空格

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

我使用这个正则表达式，但它不能完成任务：

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

我如何将字符串转换为：

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

Answer 1

正如您在注释中提到的，您希望在将值写入CSV之前对其进行修剪。这可以通过在CSVFormat:上设置withTrim-选项来完成

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");
}

file.txt执行后的内容：

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