Imports github.com/aliyun/aliyun-oss-go-sdk/oss github.com/go-basic/ipv4 github.com/huaweicloud/huaweicloud-sdk-go-obs/obs github.com/qiniu/go-sdk/v7/auth/qbox github.com/qiniu/go-sdk/v7/storage github.com/tencentyun/cos-go-sdk-v5 go.uber.org/zap Standard library imports archive/zip bytes context crypto/md5 encoding/hex errors fmt io log mime/multipart net/http net/url os path path/filepath strconv strings