Всем привет. Надо выкачать картинки с фтп сервера. Написал метод, который должен скачивать картинки с сервера. Но вот незадача, FTPClient.retriveFile() возвращает всегда false. И соответственно не заполняет OutputStream. Написал метод закачки через URL и URLConnection, все работает как надо. Кто сталкивался, подскажите в чем ошибка ? Код: | Код |
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPFileFilter;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.*;
import java.util.*;
public class Test {
/**
* ftp://user:password@host:port/filePath;type=i.
*/
public static void main(String[] args) throws IOException {
long start = System.currentTimeMillis();
testDownloadImgsViaFTPClient();
System.out.println("FTPClient time : " + (System.currentTimeMillis() - start));
start = System.currentTimeMillis();
testDownloadImgsViaURL();
System.out.println("URL Time: " + (System.currentTimeMillis() - start));
}
private static void testDownloadImgsViaURL() throws IOException {
List<String> names = Arrays.asList("1068000.jpg", "1096000.jpg", "1097000.jpg");
List<BufferedImage> bufferedImages = new ArrayList<BufferedImage>();
for (String str : names) {
URL url = new URL("ftp://login:password@some-host/imgs/" + str + ";type=i");
URLConnection urlConnection = url.openConnection();
BufferedImage bufferedImage = ImageIO.read(urlConnection.getInputStream());
bufferedImages.add(bufferedImage);
}
System.out.println(bufferedImages.size());
}
private static void testDownloadImgsViaFTPClient() {
FTPClient client = new FTPClient();
final Set<String> names = new HashSet<String>(Arrays.asList("1068000.jpg", "1096000.jpg", "1097000.jpg"));
FTPFileFilter ftpFileFilter = new FTPFileFilter() {
@Override
public boolean accept(FTPFile ftpFile) {
return names.contains(ftpFile.getName());
}
};
try {
client.connect("some-host");
client.login("login", "password");
client.enterLocalPassiveMode();
List<BufferedImage> bufferedImages = new ArrayList<BufferedImage>();
FTPFile[] ftpFiles = client.listFiles("imgs", ftpFileFilter);
for (FTPFile ftpFile : ftpFiles) {
ByteArrayOutputStream byteArrayOutputStream = null;
ByteArrayInputStream byteArrayInputStream = null;
try {
byteArrayOutputStream = new ByteArrayOutputStream();
client.setFileType(FTP.BINARY_FILE_TYPE);
client.setFileStructure(FTP.FILE_STRUCTURE);
client.setFileTransferMode(FTP.BLOCK_TRANSFER_MODE);
System.out.println(client.retrieveFile(ftpFile.getName(), byteArrayOutputStream));
byteArrayOutputStream.flush();
byte[] bArray = byteArrayOutputStream.toByteArray();
byteArrayInputStream = new ByteArrayInputStream(bArray);
BufferedImage bufferedImage = ImageIO.read(byteArrayInputStream);
bufferedImages.add(bufferedImage);
}
finally {
if (byteArrayOutputStream != null)
byteArrayOutputStream.close();
if (byteArrayInputStream != null)
byteArrayInputStream.close();
}
}
System.out.println(bufferedImages.size());
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
finally {
try {
client.disconnect();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
|
|
FTPClient.retriveFile question 
Загрузка ...
