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Posted to user@commons.apache.org by J-Pro <jp...@gmail.com> on 2010/09/17 19:04:02 UTC

[VFS] Why do I get "FileSystemException: Could not determine the type of file" ?

  Good afternoon, dear VFS gurus!

I am currently testing FTPS from vfs-2.0-snapshot and I've managed to 
successfully connect to FTPS server, but when I try to check if a file 
exists, I'm getting an exception with strange message:

    *org.apache.commons.vfs.FileSystemException: Could not determine the
    type of file*
    "ftps://193.44.23.12:9001/archive/,AMCPROD,derivative_pricing_ssb_cds_20100910_00.xml.pgp,U,20100910A00012022189.txt".
         at
    org.apache.commons.vfs.provider.AbstractFileObject.getType(AbstractFileObject.java:476)
         at
    org.apache.commons.vfs.provider.AbstractFileObject.exists(AbstractFileObject.java:448)

My code for checking if the file exists is:

    FileObject dir = null;
    String fileName =
    ",AMCPROD,derivative_pricing_ssb_cds_20100910_00.xml.pgp,U,20100910A00012022189.txt";
    // .... dir initialization
    FileObject neededFile = dir.resolveFile(fileName);
    return neededFile.exists();

I must say this code works perfect for FTP and SFTP. The problem appears 
only with FTPS.

Maybe I've forgot to do something(like enter in passive mode or 
something else), or is it a bug in this FTPS 
patch(https://issues.apache.org/jira/browse/VFS-264)?

Please advise, it's very important for me.

Thank you very much in advance!


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Re: [VFS] Why do I get "FileSystemException: Could not determine the type of file" ?

Posted by J-Pro <jp...@gmail.com>.
I'm sorry, I've forgot to add which was the cause of this exception, 
maybe it will be useful:

Caused by: 
org.apache.commons.net.ftp.parser.ParserInitializationException: Parser 
key cannot be null
    at 
org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createFileEntryParser(DefaultFTPFileEntryParserFactory.java:82)
    at 
org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2263)
    at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2046)
    at 
org.apache.commons.vfs.provider.ftps.FtpsClientWrapper.listFiles(FtpsClientWrapper.java:116)
    at 
org.apache.commons.vfs.provider.ftp.FtpFileObject.doGetChildren(FtpFileObject.java:140)
    at 
org.apache.commons.vfs.provider.ftp.FtpFileObject.getChildFile(FtpFileObject.java:110)
    at 
org.apache.commons.vfs.provider.ftp.FtpFileObject.getInfo(FtpFileObject.java:198)
    at 
org.apache.commons.vfs.provider.ftp.FtpFileObject.doGetType(FtpFileObject.java:321)
    at 
org.apache.commons.vfs.provider.AbstractFileObject.getType(AbstractFileObject.java:467)

I hope it will help you to solve this problem. I think it's a bug in 
FTPS implementation.

Thanks.

J-Pro wrote:
>  Good afternoon, dear VFS gurus!
>
> I am currently testing FTPS from vfs-2.0-snapshot and I've managed to 
> successfully connect to FTPS server, but when I try to check if a file 
> exists, I'm getting an exception with strange message:
>
>    *org.apache.commons.vfs.FileSystemException: Could not determine the
>    type of file*
>    
> "ftps://193.44.23.12:9001/archive/,AMCPROD,derivative_pricing_ssb_cds_20100910_00.xml.pgp,U,20100910A00012022189.txt". 
>
>         at
>    
> org.apache.commons.vfs.provider.AbstractFileObject.getType(AbstractFileObject.java:476) 
>
>         at
>    
> org.apache.commons.vfs.provider.AbstractFileObject.exists(AbstractFileObject.java:448) 
>
>
> My code for checking if the file exists is:
>
>    FileObject dir = null;
>    String fileName =
>    
> ",AMCPROD,derivative_pricing_ssb_cds_20100910_00.xml.pgp,U,20100910A00012022189.txt"; 
>
>    // .... dir initialization
>    FileObject neededFile = dir.resolveFile(fileName);
>    return neededFile.exists();
>
> I must say this code works perfect for FTP and SFTP. The problem 
> appears only with FTPS.
>
> Maybe I've forgot to do something(like enter in passive mode or 
> something else), or is it a bug in this FTPS 
> patch(https://issues.apache.org/jira/browse/VFS-264)?
>
> Please advise, it's very important for me.
>
> Thank you very much in advance!
>

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