Tuesday, October 22, 2013

Using Apache Commons Net API to transfer files using FTP protocol

Apache Commons Net™ library implements the client side of many basic Internet protocols. The purpose of the library is to provide fundamental protocol access, not higher-level abstractions.

In this article we are going to use the Apache Commons Net API to upload a file to from local machine to a remote FTP server, the needed steps are:

1 - Creating a new FTP Client from the Apache Commons Net API
2 - Connect to the remote FTP server
3 - Set the files transfer mode (ASCII, Binary...etc), we will be using Binary mode
4 - Enable Data transfer between the local machine and the remote FTP server
5 - Send Login Command
6 - Do File transfer
7 - Logout from the remote FTP server
8 - Disconnect from the remote FTP server

The below code is the Java translation of the previous steps :

FTPClient client = new FTPClient();
client.connect("Your FTP Server");
client.login("Your Username", "Your Password");
InputStream input = new FileInputStream(new File("Local File Location + File Name (i.e. C:/Users/adevedo/Desktop/myfile.dat"));
client.storeFile("Remote File Location + File Name (i.e. /www/location/myfile.dat", input);

Read more: Adevedo
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