FTP upload

lib

• http://commons.apache.org/proper/commons-net/index.html

key api

• FTPClient

demo

• https://github.com/cheyiliu/test4java/blob/master/src/test/ftp/FTPClientExample.java

notes

• 多级目录要一级一级地创建

ftp.makeDirectory("/to_be_deleted/");
ftp.makeDirectory("/to_be_deleted/1013/");
ftp.makeDirectory("/to_be_deleted/1013/123");

• 上传mp4文件后，在下载下来却不能播放了

原因是FTPClient的setFileType(FTP.BINARY_FILE_TYPE); file type要设置正确
FTP.BINARY_FILE_TYPE, A constant used to indicate the file(s) being transfered should be treated as a binary image, i.e., no translations should be performed. 

ref

• http://commons.apache.org/proper/commons-net/apidocs/org/apache/commons/net/ftp/FTP.html#BINARY_FILE_TYPE