QT FTP，尝试QT连接FTP，实现文件的拷贝
资源文件列表
FTP/build-QT_FTP-Desktop_Qt_5_9_1_MinGW_32bit-Debug/.qmake.stash , 1023
FTP/build-QT_FTP-Desktop_Qt_5_9_1_MinGW_32bit-Debug/debug/QT_FTP.exe , 1351660
FTP/build-QT_FTP-Desktop_Qt_5_9_1_MinGW_32bit-Debug/Makefile , 28990
FTP/build-QT_FTP-Desktop_Qt_5_9_1_MinGW_32bit-Debug/Makefile.Debug , 43247
FTP/build-QT_FTP-Desktop_Qt_5_9_1_MinGW_32bit-Debug/Makefile.Release , 43327
FTP/QT_FTP/main.cpp , 183
FTP/QT_FTP/mainwindow.cpp , 1398
FTP/QT_FTP/mainwindow.h , 944
FTP/QT_FTP/mainwindow.ui , 1307
FTP/QT_FTP/QT_FTP.pro , 1079
FTP/QT_FTP/QT_FTP.pro.user , 23810