Ftpclient.listfiles () could not get FTP file name list

Jar Package Commons-net-2.2.jar

Reference org.apache.commons.net.ftp.*

ftpfile[] fs = Ftpclient.listfiles ();

Gets the list of specified directory file names,

Used to do so, on Linux and Windows are no problem, today do not know why FS length is 0, unable to get file list error prompt:

Org.eclipse.debug.core.DebugException:com.sun.jdi.ClassNotLoadedException:Type have not been loaded occurred while Retrieving component type of array.

And FS does not block.

Find information on the Internet, say add ftpclient.enterlocalpassivemode ();

Test to read FTP file list

Reference: http://www.iteye.com/problems/39038

http://icelander.iteye.com/blog/1313986

The second URL has a different explanation for Ftpclient.enterlocalpassivemode () than the one I encountered.

Ftpclient.listfiles () could not get FTP file name list