Merge pull request #1 from DustInMonteriggioni/Branch-chyb

mysql-connector is back~
Merge remote-tracking branch 'origin/Branch-chyb'
hhha
缺了子类转换函数，基本写完了
Infile Outfile merged from HJH
Merge pull request #5 from DustInMonteriggioni/HAN

Infile Outfile merged from HJH