Apache FTPClient listFiles() vs listFileNames()

Question

I am using apache-commons-net 3.4 and i found a strange issue i cant explain. I want to get the FTPFile entries of an directory but when i use FTPClient#listFiles() an empty array is returned, but FTPClient#listNames() list all entries.

    FTPClient client = new FTPClient();

    client.connect("192.168.1.4");
    client.enterLocalPassiveMode();
    client.login("ftpuser", "ftpuser");

    System.out.println( client.listFiles("/").length); // prints 0
    System.out.println( client.listNames("/").length); // prints 21

What is going on here how to use listFiles() correct ?

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score 1 · Accepted Answer · edited May 23 '17 at 12:30

This topic could help you make listFiles work :

FTPClient.listFiles not working

From the documentation of FtpClient, the two methods don't work in the same way :

listFiles(String pathname) Using the default system autodetect mechanism, obtain a list of file information for the current working directory or for just a single file.This information is obtained through the LIST command.

listNames(String pathname) Obtain a list of filenames in a directory (or just the name of a given file, which is not particularly useful).This information is obtained through the NLST command.

Apache FTPClient listFiles() vs listFileNames()

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