在JAVA程序中，经常需要和FTP打交道，比如向FTP服务器上传文件、下载文件，本文简单介绍如何利用jakarta commons中的FTPClient（在commons-net包中）实现上传下载文件。

所用到的jar包有：

commons-net-1.4.1.jar

jakarta-oro.jar-In JAVA program, often need to deal with and FTP, such as to the FTP server to upload files, download files, the paper simply introduces how to use the Jakarta Commons FTPClient (in the Commons-net bags) realize upload download files.

The jar used package are:

Commons-net-1.4.1. Jar

Jakarta-oro. Jar