我想使用简单的FTP将图像上传到fto。但它总是无法上传到FTP。该错误始终指向ftp.connect。我不知道为什么。所以我希望你能帮助我。请。提前致谢。 Upload.java
public class ImageUpdate extends AppCompatActivity {
private static final String TAG_ID = "id";
private static final String TAG_PESAN = "message";
private static final String TAG_HASIL = "result";
private static final String TAG_IMAGE_ID = "id_image";
private static final String TAG_IMAGE_NAME= "image_name";
ProgressDialog pDialog;
JSONParser jparser = new JSONParser();
ArrayList<HashMap<String, String>> namelist, idList, imageList;
JSONArray names, names1, names2;
private static int RESULT_LOAD_IMG = 1;
String imgDecodableString = null;
Button submit;
static final String FTP_HOST = "xxxxxxxxxx";
static final String FTP_USER = "xxxxxxxxxxxx";
static final String FTP_PASS = "xxxxxxxxxxx";
String name, vid;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client2;
SessionManagement session;
String nm,addr,pos,tlp,mail,usr,pass,id,image;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_update);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
client2 = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
session =new SessionManagement(ImageUpdate.this);
HashMap<String, String> user = session.getUserDetails();
id=user.get(SessionManagement.KEY_ID);
nm=user.get(SessionManagement.KEY_NAME);
addr=user.get(SessionManagement.KEY_ALAMAT);
mail=user.get(SessionManagement.KEY_EMAIL);
tlp=user.get(SessionManagement.KEY_TELP);
usr=user.get(SessionManagement.KEY_USERNAME);
pass=user.get(SessionManagement.KEY_PASS);
submit=(Button) findViewById(R.id.buttonUploadPicture);
submit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (imgDecodableString == null) {
Toast.makeText(ImageUpdate.this, "Choose image first, please", Toast.LENGTH_LONG);
} else {
File f = new File(imgDecodableString);
name = f.getName();
uploadFile(f);
}
}
});
}
public void loadImagefromGallery(View view) {
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// Start the Intent
startActivityForResult(galleryIntent, RESULT_LOAD_IMG);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
// When an Image is picked
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
// Get the Image from data
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
// Get the cursor
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filename = cursor.getString(columnIndex);
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
File f = new File("" + imgDecodableString);
f.getName();
ImageView imgView = (ImageView) findViewById(R.id.imgView);
// Set the Image in ImageView after decoding the String
imgView.setImageBitmap(BitmapFactory
.decodeFile(imgDecodableString));
} else {
Toast.makeText(this, "Pilih Bukti Transaksi",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Failed to Choose", Toast.LENGTH_LONG)
.show();
}
}
public void uploadFile(File fileName) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
SimpleFTP ftp=new SimpleFTP();
try {
ftp.connect("xxxxxxx", 21, "xxxxxxxx", "xxxxxxx");
ftp.bin();
ftp.cwd("img/imageProfil/");
ftp.stor(fileName);
ftp.disconnect();
} catch (Exception e) {
e.printStackTrace();
try {
ftp.disconnect();
Toast.makeText(ImageUpdate.this, "disconnect", Toast.LENGTH_LONG).show();
} catch (Exception e2) {
e2.printStackTrace();
Toast.makeText(ImageUpdate.this, "failed", Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client2.connect();
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Upload Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.amobi.newlomapodfix/http/host/path")
);
AppIndex.AppIndexApi.start(client2, viewAction);
}
@Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Upload Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.amobi.newlomapodfix/http/host/path")
);
AppIndex.AppIndexApi.end(client2, viewAction);
client2.disconnect();
}
}
栈跟踪
06-20 22:32:00.692 2845-2845/com.amobi.newlomapodfix W/EGL_emulation: eglSurfaceAttrib not implemented
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: java.io.IOException: SimpleFTP received an unknown response when connecting to the FTP server: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at org.jibble.simpleftp.SimpleFTP.connect(SimpleFTP.java:74)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at com.amobi.newlomapodfix.UploadActivity.uploadFile(UploadActivity.java:167)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at com.amobi.newlomapodfix.UploadActivity$1.onClick(UploadActivity.java:100)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.view.View.performClick(View.java:4204)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.view.View$PerformClick.run(View.java:17355)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.os.Handler.handleCallback(Handler.java:725)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.os.Handler.dispatchMessage(Handler.java:92)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.os.Looper.loop(Looper.java:137)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5041)
06-20 22:32:04.900 2845-2845/com.amobi.newlomapodfix W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
06-20 22:32:04.904 2845-2845/com.amobi.newlomapodfix W/System.err: at java.lang.reflect.Method.invoke(Method.java:511)
06-20 22:32:04.908 2845-2845/com.amobi.newlomapodfix W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-20 22:32:04.912 2845-2845/com.amobi.newlomapodfix W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-20 22:32:04.912 2845-2845/com.amobi.newlomapodfix W/System.err: at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：1)
这个答案解释了简单FTP中的不合格FTP规范，实际上，服务器应该从220开始，但是这个库会出现异常。 （https://stackoverflow.com/a/24386510/6093353）。
本教程实现了一个简单的FTP上传，尝试遵循这一点 http://androidexample.com/FTP_File_Upload_From_Sdcard_to_server/index.php?view=article_discription&aid=98