我使用ftp4j-1.7.2.jar将图片上传到ftp。但是当我尝试执行上传时，它总是显示失败。它总是在上传文件中出现异常并向我显示失败的toast。你能帮助我吗？谢谢先进
MainActivity.Java
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import java.io.File;
import it.sauronsoftware.ftp4j.FTPClient;
import it.sauronsoftware.ftp4j.FTPDataTransferListener;
public class MainActivity extends AppCompatActivity {
private static int RESULT_LOAD_IMG = 1;
String imgDecodableString;
Button btn;
static final String FTP_HOST= "**********";
/********* FTP USERNAME ***********/
static final String FTP_USER = "******";
/********* FTP PASSWORD ***********/
static final String FTP_PASS ="********";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn=(Button) findViewById(R.id.buttonUploadPicture);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File f = new File(imgDecodableString);
String name=f.getName();
// Upload sdcard file
uploadFile(f);
}
});
}
// public void onClick(View v){
//
//// Bundle b=new Bundle();
//// Intent i=new Intent(getApplication(), DetailTransActivity.class);
//// Toast.makeText(this, "Upload Bukti Transaksi Berhasil",
//// Toast.LENGTH_LONG).show();
//// i.putExtras(b);
//// startActivity(i);
//
// }
public void loadImagefromGallery(View view) {
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.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, "Upload Bukti Transaksi Gagal", Toast.LENGTH_LONG)
.show();
}
}
public void uploadFile(File fileName){
FTPClient client = new FTPClient();
try {
client.connect(FTP_HOST, 21);
client.login(FTP_USER, FTP_PASS);
client.setType(FTPClient.TYPE_BINARY);
client.changeDirectory("/assets/");
client.upload(fileName, new MyTransferListener());
} catch (Exception e) {
e.printStackTrace();
try {
client.disconnect(true);
Toast.makeText(MainActivity.this,"disconnect",Toast.LENGTH_LONG).show();
} catch (Exception e2) {
e2.printStackTrace();
Toast.makeText(MainActivity.this,"failed",Toast.LENGTH_LONG).show();
}
}
}
/******* Used to file upload and show progress **********/
public class MyTransferListener implements FTPDataTransferListener {
public void started() {
btn.setVisibility(View.GONE);
// Transfer started
Toast.makeText(getBaseContext(), " Upload Started ...", Toast.LENGTH_SHORT).show();
//System.out.println(" Upload Started ...");
}
public void transferred(int length) {
// Yet other length bytes has been transferred since the last time this
// method was called
Toast.makeText(getBaseContext(), " transferred ..." + length, Toast.LENGTH_SHORT).show();
//System.out.println(" transferred ..." + length);
}
public void completed() {
btn.setVisibility(View.VISIBLE);
// Transfer completed
Toast.makeText(getBaseContext(), " completed ...", Toast.LENGTH_SHORT).show();
//System.out.println(" completed ..." );
}
public void aborted() {
btn.setVisibility(View.VISIBLE);
// Transfer aborted
Toast.makeText(getBaseContext()," transfer aborted , please try again...", Toast.LENGTH_SHORT).show();
//System.out.println(" aborted ..." );
}
public void failed() {
btn.setVisibility(View.VISIBLE);
// Transfer failed
System.out.println(" failed ..." );
}
}
}
堆栈跟踪
05-08 23:12:51.465 17345-17348/com.amobi.imageuploading D/dalvikvm: GC_CONCURRENT freed 470K, 4% free 15281K/15776K, paused 3ms+1ms, total 14ms
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: android.os.NetworkOnMainThreadException
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.net.InetAddress.getByName(InetAddress.java:289)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.net.InetSocketAddress.<init>(InetSocketAddress.java:105)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.net.InetSocketAddress.<init>(InetSocketAddress.java:90)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at it.sauronsoftware.ftp4j.FTPConnector.tcpConnectForCommunicationChannel(FTPConnector.java:208)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at it.sauronsoftware.ftp4j.connectors.DirectConnector.connectForCommunicationChannel(DirectConnector.java:39)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at it.sauronsoftware.ftp4j.FTPClient.connect(FTPClient.java:1036)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.amobi.imageuploading.MainActivity.uploadFile(MainActivity.java:116)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.amobi.imageuploading.MainActivity$1.onClick(MainActivity.java:44)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.view.View.performClick(View.java:4204)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.view.View$PerformClick.run(View.java:17355)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Handler.handleCallback(Handler.java:725)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Handler.dispatchMessage(Handler.java:92)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Looper.loop(Looper.java:137)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5041)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.lang.reflect.Method.invoke(Method.java:511)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at dalvik.system.NativeStart.main(Native Method)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: java.lang.IllegalStateException: Client not connected
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at it.sauronsoftware.ftp4j.FTPClient.disconnect(FTPClient.java:1123)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.amobi.imageuploading.MainActivity.uploadFile(MainActivity.java:126)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.amobi.imageuploading.MainActivity$1.onClick(MainActivity.java:44)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.view.View.performClick(View.java:4204)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.view.View$PerformClick.run(View.java:17355)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Handler.handleCallback(Handler.java:725)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Handler.dispatchMessage(Handler.java:92)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.os.Looper.loop(Looper.java:137)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5041)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at java.lang.reflect.Method.invoke(Method.java:511)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-08 23:15:29.771 17345-17345/com.amobi.imageuploading W/System.err: at dalvik.system.NativeStart.main(Native Method)