目前，我正在使用Android中的FTP将图片上传到服务器。但是，每当我连接ftp时，它将轻松连接到服务器。图像也成功上传到服务器，但是主要问题是图像大小为0kb。从字面上看，卡在了这里，无法在服务器上获得正确的映像。任何帮助都将是可贵的。
以下是我的代码：-
import it.sauronsoftware.ftp4j.FTPClient;
import it.sauronsoftware.ftp4j.FTPDataTransferListener;
import java.io.File;
import java.io.FileInputStream;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
import org.apache.commons.net.ftp.FTPReply;
public class FtpUpload extends Activity implements OnClickListener {
/********* work only for Dedicated IP ***********/
static final String FTP_HOST= "**.**.***.**";
/********* FTP USERNAME ***********/
static final String FTP_USER = "***********";
/********* FTP PASSWORD ***********/
static final String FTP_PASS ="***************";
Button btnUpload;
public FTPClient mFTPClient = null; // Add top of the class
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ftp);
btnUpload = (Button) findViewById(R.id.btnUpload);
btnUpload.setOnClickListener(this);
// ftpclient = new MyFTPClientFunctions();
// new Thread(new Runnable() {
// public void run() {
// boolean status = false;
// // host – your FTP address
// // username & password – for your secured login
// // 21 default gateway for FTP
// status = ftpclient.ftpConnect(FTP_HOST, FTP_USER,
FTP_PASS, 21);
// if (status == true) {
// Log.d("", "Connection Success");
// } else {
// Log.d("", "Connection failed");
// }
// }
// }).start();
}
public void onClick(View v) {
/********** Pick file from sdcard *******/
File f = new File("/sdcard/logo.png");
// Upload sdcard file
uploadFile(f);
}
/* public boolean ftpConnect(String host, String username, String password, int port) {
try {
mFTPClient = new FTPClient();
// connecting to the host
mFTPClient.connect(host, port);
// now check the reply code, if positive mean connection success
if (FTPReply.isPositiveCompletion(mFTPClient.getReplyCode())) {
// login using username & password
boolean status = mFTPClient.login(username, password);
*//*
* Set File Transfer Mode
* To avoid corruption issue you must specified a correct
* transfer mode, such as ASCII_FILE_TYPE, BINARY_FILE_TYPE,
* EBCDIC_FILE_TYPE .etc. Here, I use BINARY_FILE_TYPE for
* transferring text, image, and compressed files.
*//*
mFTPClient.setFileType(FTP.BINARY_FILE_TYPE);
mFTPClient.enterLocalPassiveMode();
return status;
}
} catch (Exception e) {
Log.d("", "Error: could not connect to host " + host);
}
return false;
}
public boolean ftpDisconnect() {
try {
mFTPClient.logout();
mFTPClient.disconnect();
return true;
} catch (Exception e) {
Log.d(";", "Error occurred while disconnecting from ftp server.");
}
return false;
}
public boolean ftpUpload(String srcFilePath, String desFileName, String desDirectory, Context context) {
boolean status = false;
try {
FileInputStream srcFileStream = new FileInputStream(srcFilePath);
// change working directory to the destination directory
// if (ftpChangeDirectory(desDirectory)) {
status = mFTPClient.storeFile(desFileName, srcFileStream);
// }
srcFileStream.close();
return status;
} catch (Exception e) {
e.printStackTrace();
Log.d("", "upload failed: " + e);
}
return status;
}*/
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("/upload/");
client.upload(fileName, new MyTransferListener());
} catch (Exception e) {
e.printStackTrace();
try {
client.disconnect(true);
} catch (Exception e2) {
e2.printStackTrace();
}
}
}
/******* Used to file upload and show progress **********/
public class MyTransferListener implements FTPDataTransferListener {
public void started() {
btnUpload.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() {
btnUpload.setVisibility(View.VISIBLE);
// Transfer completed
Toast.makeText(getBaseContext(), " completed ...", Toast.LENGTH_SHORT).show();
//System.out.println(" completed ..." );
}
public void aborted() {
btnUpload.setVisibility(View.VISIBLE);
// Transfer aborted
Toast.makeText(getBaseContext()," transfer aborted, please try again...", Toast.LENGTH_SHORT).show();
//System.out.println(" aborted ..." );
}
public void failed() {
btnUpload.setVisibility(View.VISIBLE);
// Transfer failed
System.out.println(" failed ..." );
}
}
}