Try it with some other FTP client software. If it doesn't work, then the problem isn't in your java class.
-----Original Message----- From: Cysneros, Nelson A CIV SPAWARSYSCEN-PACIFIC, 56540 [mailto:nelson.cysne...@navy.mil] Sent: Tuesday, February 15, 2011 4:50 PM To: user@commons.apache.org Subject: FTPClient hangs when downloading large files I'm using the net-commons v2.2 FTPClient to download files from a server and it works great for files less then 250MB, but hangs with larger files. Wondering if there is anything I can do to get around this issue. I'm downloading files up to 500MB in size. Thanks in advance. Here is my source code: ------------------------------------------------------------------------ FTPClient ftpClient = new FTPClient(); File file = null; // //////////////////////////////////////////////////////////////////// // Grab all files from the FTP server and place them in the specified // folder for processing. //////////////////////////////////////////////////////////////////////// // Log on to FTP server try { // FTP Server ftpClient.enterLocalPassiveMode(); ftpClient.connect(ftpServer); // After connection attempt, you should check the reply code to verify // success. int reply = ftpClient.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftpClient.disconnect(); logger.error("FTP server refused connection."); System.exit(1); } ftpClient.setFileType(FTP.BINARY_FILE_TYPE); ftpClient.login(m_sFTPCredUN, m_sFTPCredPW); } catch (java.net.ConnectException ex1) { logger.info(ex1.getMessage()); System.out.print("-----FTP Connection problem: "+ ftpServer+"\n"); return; }catch (Exception ex1) { logger.info(ex1.getMessage()); System.out.print("-----FTP Connection problem: "+ftpServer+"\n"); return; } //Download files FileOutputStream fos=null; try { // List the files in the directory FTPFile[] files = ftpClient.listFiles(ftpPath); logger.info("Number of files in dir: " + files.length); for (int i = 0; i < files.length; i++) { String fileName = files[i].getName(); // //////////////// // Get Files // //////////////// logger.info("Getting file: " + fileName); file = new File(m_sInputRapierPath + File.separator + files[i].getName()); fos = new FileOutputStream(file); ftpClient.retrieveFile(ftpPath + "/" + files[i].getName(),fos); //Hangs here logger.info("File transfer complete"); fos.close(); } } catch (org.apache.commons.net.io.CopyStreamException e) { logger.info("FTP FETCH PROBLEM(1): " + e.getMessage()); //System.out.println("FTP FETCH PROBLEM(1): " + e.getMessage()); try { if (file != null){ fos.close(); file.delete(); } }//try catch(IOException ex){ logger.info("FTP Problem occured(4) : " + ex.getMessage()); }//catch } catch (Exception ex) { logger.info("FTP FETCH PROBLEM(3): " + ex.getMessage()); //System.out.println("FTP FETCH PROBLEM(3): " + e.getMessage()); try { if (file != null){ fos.close(); file.delete(); } }//try catch(IOException ex1){ logger.info("FTP Problem occured(4) : " + ex1.getMessage()); }//catch } finally { try { if (file != null){ // Logout from the FTP Server and disconnect ftpClient.logout(); if(ftpClient.isConnected()) ftpClient.disconnect(); } }//try catch(IOException ex){ logger.info("FTP Problem occured(4) : " + ex.getMessage()); }//catch }//finally }// if --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org
