上传png错误：org.apache.commons.net.io.CopyStreamException：复制时捕获IOException

Question

我有问题

我尝试通过FTP将图像上传到我的服务器，但没有完成上传，出现错误，服务器显示的权重为0.1kb

代码：

try {

            FTPClient ftpClient = new FTPClient();
            ftpClient.connect(InetAddress.getByName("zzz.zzz.zz.zzz"));
            ftpClient.login("user", db_pass);
            ftpClient.changeWorkingDirectory("/domains/dinosystems.ml/public_html/SavingDogs/Files/UserImgs/");
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE, FTP.BINARY_FILE_TYPE);
            ftpClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);

            FileInputStream f = null;

            if (ActivityCompat.checkSelfPermission(Registro_pet.this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(Registro_pet.this, android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
                f = new FileInputStream(i_file);
            }

                BufferedInputStream buffIn = new BufferedInputStream(f);
                ftpClient.enterLocalPassiveMode();
                Log.v("TRABAJANDO EN DIR: ", ftpClient.printWorkingDirectory());
                ftpClient.makeDirectory(UID_u);
                ftpClient.changeWorkingDirectory("/domains/dinosystems.ml/public_html/SavingDogs/Files/UserImgs/" + UID_u + "/");
                Log.v("TRABAJANDO EN DIR: ", ftpClient.printWorkingDirectory());
                Log.v("TRABAJANDO CON: ", archivo[archivo_space]);
                ftpClient.storeFile(archivo[archivo_space], buffIn);


                buffIn.close();
                ftpClient.logout();
                ftpClient.disconnect();
                pass = true;

        }
        catch (Exception e)
        {
            e.printStackTrace();
            pass = false;
        }

错误es：

01-07 18:32:26.763 14577-14610/ml.dinosystems.savingdogs W/System.err: org.apache.commons.net.io.CopyStreamException: IOException caught while copying.

01-07 18:32:26.764 14577-14610/ml.dinosystems.savingdogs W/System.err:     at org.apache.commons.net.io.Util.copyStream(Util.java:136)

    at org.apache.commons.net.ftp.FTPClient._storeFile(FTPClient.java:675)

    at org.apache.commons.net.ftp.FTPClient.__storeFile(FTPClient.java:639)

    at org.apache.commons.net.ftp.FTPClient.storeFile(FTPClient.java:2030)

    at ml.dinosystems.savingdogs.Registro_pet$upload_photo.doInBackground(Registro_pet.java:355)

    at ml.dinosystems.savingdogs.Registro_pet$upload_photo.doInBackground(Registro_pet.java:327)

    at android.os.AsyncTask$2.call(AsyncTask.java:304)

     at java.util.concurrent.FutureTask.run(FutureTask.java:237)

  01-07 18:32:26.765 14577-14610/ml.dinosystems.savingdogs W/System.err:     
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)

     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)

     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)

     at java.lang.Thread.run(Thread.java:761)

    Caused by: java.io.IOException: Stream closed

    at java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:151)

    at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)

   01-07 18:32:26.766 14577-14610/ml.dinosystems.savingdogs W/System.err:     
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)

    at java.io.BufferedInputStream.read(BufferedInputStream.java:334)

    at java.io.FilterInputStream.read(FilterInputStream.java:107)

    at org.apache.commons.net.io.Util.copyStream(Util.java:102)

    ... 11 more