i18n: logs in rest pkgs

pkg/serializer/error.go

@@ -221,7 +221,7 @@ const (
 // DBErr 数据库操作失败
 func DBErr(msg string, err error) Response {
 	if msg == "" {
-		msg = "数据库操作失败"
+		msg = "Database operation failed."
 	}
 	return Err(CodeDBError, msg, err)
 }
@@ -229,7 +229,7 @@ func DBErr(msg string, err error) Response {
 // ParamErr 各种参数错误
 func ParamErr(msg string, err error) Response {
 	if msg == "" {
-		msg = "参数错误"
+		msg = "Invalid parameters."
 	}
 	return Err(CodeParamErr, msg, err)
 }

pkg/serializer/response.go

@@ -19,7 +19,7 @@ func NewResponseWithGobData(data interface{}) Response {
 	var w bytes.Buffer
 	encoder := gob.NewEncoder(&w)
 	if err := encoder.Encode(data); err != nil {
-		return Err(CodeInternalSetting, "无法编码返回结果", err)
+		return Err(CodeInternalSetting, "Failed to encode response content", err)
 	}
 
 	return Response{Data: w.Bytes()}

pkg/serializer/user.go

@@ -13,7 +13,7 @@ import (
 func CheckLogin() Response {
 	return Response{
 		Code: CodeCheckLogin,
-		Msg:  "未登录",
+		Msg:  "Login required",
 	}
 }