完善了文件上传功能呢个
Merge branch 'dev' of github.com:JYWa/teamstyle16 into ricky
文件上传/下载OK，但是中文文件名会有bug
删去没用的测试文件
Merge branch 'ricky' into dev
Merge branch 'dev' of github.com:JYWa/teamstyle16 into ricky
Merge branch 'ricky' into dev