diff --git a/controllers/auth2.go b/controllers/auth2.go
index cee287241..185afce69 100644
--- a/controllers/auth2.go
+++ b/controllers/auth2.go
@@ -343,8 +343,9 @@ type UserInfoWithWeixin struct {
 // @router /GetUserByMiniInfo [post]
 func (c *Auth2Controller) GetUserByMiniInfo() {
 	c.callGetUserByMiniInfo(func(params *tAuth2GetUserByMiniInfoParams) (retVal interface{}, errCode string, err error) {
+		authInfo := &auth2.AuthInfo{}
 		result := api.Cacher.Get(params.Token)
-		authInfo := result.(*auth2.AuthInfo)
+		utils.Map2StructByJson(result, &authInfo, false)
 		// authInfo, err := api.Cacher.Get(params.Token)
 		if err == nil {
 			decryptedDataBase64, err2 := weixin.AutherObjMini.DecryptData(authInfo, GetComposedCode(&c.Controller, params.JsCode), params.Data, params.Iv)