Ftp上传和下载文件，以及遍历文件的类封装-Ftp Method to Unload and downlaod File

一个ftp上传得工具,可以上传和下载文件,还可以管理下载的文件-Get an ftp upload tools, you can upload and download files, you can also manage the downloaded file

java语言操作ftp文件,上传下载和删除，一共三个类，一个工具类Ftputil.，一个实体类Kmconfig。一个测试类Test(Java language operations, FTP files, upload, download and delete, a total of three classes, a tool class Ftputil., an entity class, Kmconfig. A test class Test)