Imports github.com/disintegration/imaging github.com/flywithbug/file github.com/flywithbug/log4go github.com/gin-gonic/gin Standard library imports crypto/md5 encoding/hex fmt go-eladmin/common go-eladmin/model go-eladmin/model/model_file go-eladmin/server/handler/handler_common image io/ioutil mime/multipart net/http os path/filepath strconv strings time