Imports github.com/boombuler/barcode/qr github.com/boombuler/barcode golang.org/x/image/bmp github.com/thinkgos/go-core-package/extos github.com/thinkgos/go-core-package/lib/algo github.com/thinkgos/strext Standard library imports image/png image/jpeg bytes image/gif encoding/base64 fmt io/ioutil path/filepath strings