java – 即使在.flush()/.close()之后,FileWriter也不会写入文件

通过使用调试器,String数据包含应该写入的正确数据,但它永远不会写入文本文件.

关于我忽略的事情的任何建议将不胜感激.

private static void createReservation(String filmName,String date,int noOfSeats,String username) {
    FileWriter fw = null;
    try {
        File bookingFile = new File("C:serverbookinginfo.txt");
        if (!bookingFile.exists())
        {
            bookingFile.createNewFile();
        }
        fw = new FileWriter(bookingFile.getName(),true);
        String data = "<"+filmName+"><"+date+"><"+Integer.toString(noOfSeats)+"><"+username+">rn";
        fw.write(data);
        fw.flush();
    } catch (IOException ex) {
        Logger.getLogger(FilmInfoHandler.class.getName()).log(Level.SEVERE,null,ex);
    } finally {
        try {
            fw.close();
        } catch (IOException ex) {
            Logger.getLogger(FilmInfoHandler.class.getName()).log(Level.SEVERE,ex);
        }
    }
}