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PODownloading an XML file via FTP
 

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    <p>I have a list of feeds in a database that I use to download a XML file from a FTP server and then parse it. The scrpt is bundled up into a jar file which is run daily using Windows Task Scheduler. Occasionally the request get haulted at grabbing a certain xml file. So far it has happened about 3 times in 2 weeks with no real pattern that I can see. </p> <p>When it does mess up, I go to the computer it is being run from, I see the command window open and it is stopped before the xml has been fully downloaded. If I close the command window and run the task manually everything will work fine. </p> <p>The code that I am using to download the xml file is:</p> <pre><code>private void loadFTPFile(String host, String username, String password, String filename, String localFilename){ System.out.println(localFilename); FTPClient client = new FTPClient(); FileOutputStream fos = null; try { client.connect(host); client.login(username, password); String localFilenameOutput = createFile(assetsPath + localFilename); fos = new FileOutputStream(localFilenameOutput); client.retrieveFile(filename, fos); } catch (IOException e) { e.printStackTrace(); } finally { try { if (fos != null) fos.close(); client.disconnect(); } catch (IOException e) { e.printStackTrace(); } } }</code></pre> <p>This function is being called in a loop and when it fails, everything stops and the script doesn't go onto the next feed.</p> <p>I'm not sure what is happening, possibly the connection being lost, but I would think that the try/catch would catch if that is happening. I'm not sure if a timeout would do the trick or threads need to be used (but I've never worked with threads)</p> <p>Could anyone point me in the right direction onto why this is happening and what I can do to fix the problem</p>
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    1. USKen White
    1. USlocrizak
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    1. COWhen the program hangs, the last file has been succefully downloaded?
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    2. COno, it is only a potion of the file
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    3. COSo you can try to set a timeout on the data connection to guard against server faults - See my updated answer
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