FtpClient the solution to the corrupted zip file when uploading files

With the Apache ftpclient upload file found a problem, is to upload txt file no problem, but upload zip file will be damaged, check the reason, the original is this:

Because the default transport mode in RFC 959 is supposed to be ASCII, the Org.apache.commons.net.ftp.FTPClient implementation also adheres to this standard. So org.apache.commons.net.ftp.FTPClient is transmitted in ASCII form by default, and if you are a binary binary file (such as a zip), then the uploaded file will be corrupted. However, transferring ASCII files (such as TXT) is not a problem.

So if you are transferring the binary binaries, you need to set up the file type after the connection, login, and the following code example:
Ftpclient.connect (host);
Ftpclient.login (user, password);
Ftpclient.setfiletype (Ftpclient.binary_file_type);

It's OK now.