实现从ini文件读取信息，与ftp服务器建立连接，实现上传和下载，把要上传的文件上传到ftp服务器，下载的文件下载到本地电脑上。-Read information from a ini file, and ftp server connection, to upload and download, upload the file to upload to the ftp server, download the file to download to your local computer.

ftp服务器文件上传，首先需要建立ftp服务站点，实现本地文件上传到ftp服务器(FTP server file upload)