Apache Commons Net FTP is uploading corrupted files

Question

I\'m trying to use Apache Commons Net for FTP file transfers.

Problem is files are intermittently arriving at the server corrupt. By \'corrupt\' I mean that WinRAR t

Answer 1

Commons FTP defaults to Ascii file types. You want to set it to Binary when dealing with binary data like a ZIP file.

From http://commons.apache.org/net/api/org/apache/commons/net/ftp/FTPClient.html

The default settings for FTPClient are for it to use FTP.ASCII_FILE_TYPE , FTP.NON_PRINT_TEXT_FORMAT , FTP.STREAM_TRANSFER_MODE , and FTP.FILE_STRUCTURE . The only file types directly supported are FTP.ASCII_FILE_TYPE and FTP.BINARY_FILE_TYPE .

You want to do setFileType(FTP.BINARY_FILE_TYPE) before you send the file.