Ftp File download From java code

java ftp-client apache-commons-net

14,172

turn off the firewall.in this issue

14,172

Author by

nomee.tec

Updated on June 04, 2022

Comments

nomee.tec almost 2 years
i have this code to download a single file .
```
    import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTPClient;
public class NetTest {
public static void main(String[] args){
FTPClient client = new FTPClient( );
OutputStream outStream;
    try {
```
this is the part of server and passwords .
```
   client.connect( "servername" );
    client.login("noman123", "pass");
    String remoteFile = "/a.txt";
    outStream = new FileOutputStream( "a.txt" );
```
simple fill downloading but error on this line
```
    client.retrieveFile( remoteFile, outStream );
} catch(IOException ioe) {
    System.out.println( "Error communicating with FTP server." );
} finally {
    try {
        client.disconnect( );
    } catch (IOException e) {
        System.out.println( "Problem disconnecting from FTP server" );
    }
}

}
}
```
and it gives me errors like i hope that u can understand the issue that i m facing now

java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) at java.net.SocketOutputStream.write(SocketOutputStream.java:153) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at org.apache.commons.net.ftp.FTP.__send(FTP.java:496) at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:470) at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:547) at org.apache.commons.net.ftp.FTP.port(FTP.java:872) at org.apache.commons.net.ftp.FTPClient.openDataConnection(FTPClient.java:667) at org.apache.commons.net.ftp.FTPClient.retrieveFile(FTPClient.java:1595) at FtpDownloadDemo.main(FtpDownloadDemo.java:25)
- assylias almost 12 years
  
  Instead of printing a custom message, you should print the stack trace which would most likely give you useful information about what happened. (ioe.printStackTrace())
- nomee.tec almost 12 years
  
  i already done this but it gives me un understandable texts
- assylias almost 12 years
  
  that un-understandable text could be very useful. Why don't you edit your question and add the content of that text at the bottom?
- assylias almost 12 years
  
  You have clicked on edit below your question, added your text and saved the edit?
- assylias almost 12 years
  
  Possibly related: stackoverflow.com/questions/8607026/… which suggests a firewall issue.
nomee.tec almost 12 years

i just done this and it says that i m connected and on the root but when i try to access some data it fails.