Imports github.com/qiniu/api.v7/auth/qbox github.com/qiniu/x/bytes.v7 github.com/qiniu/x/rpc.v7 github.com/qiniu/x/xlog.v7 Standard library imports encoding/base64 encoding/json errors fmt hash/crc32 io mime/multipart net/http net/textproto net/url os path path/filepath strconv strings sync time bytes context