java 流读写文件

 public static void createFileToNewPath(InputStream inStream, String newPath) {
        try {
            int bytesum = 0;
            int byteread = 0;
            FileOutputStream fs = new FileOutputStream(newPath);
            byte[] buffer = new byte[1444];
            while ((byteread = inStream.read(buffer)) != -1) {
                bytesum += byteread; // 字节数 文件大小
                fs.write(buffer, 0, byteread);
            }
            inStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }