feat: 从黄果 NET hgdjnet-server 9bfbafe 导入 HKDJ 官网后端

来源：hgdjnet-server 9bfbafe10d417deea959bd53117bc88a10e60a83
项目身份 HKDJ / JHA-216，独立官网仓库，Jenkins 守卫键 hkdjnet
测试目录 /server/hkdj_net，App/Web API 30331/30332

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/middleware/validator/default-validator.go

@@ -0,0 +1,81 @@
+package validator
+
+import (
+	"reflect"
+	"strings"
+	"sync"
+
+	"github.com/gin-gonic/gin/binding"
+	"github.com/go-playground/locales/en"
+	ut "github.com/go-playground/universal-translator"
+	"gopkg.in/go-playground/validator.v9"
+	en_translations "gopkg.in/go-playground/validator.v9/translations/en"
+)
+
+var (
+	ValidatorUni *ut.UniversalTranslator
+)
+
+type defaultValidator struct {
+	once     sync.Once
+	validate *validator.Validate
+}
+
+var v binding.StructValidator = &defaultValidator{}
+
+func init() {
+	v.Engine()
+}
+
+func (v *defaultValidator) ValidateStruct(obj interface{}) error {
+
+	if kindOfData(obj) == reflect.Struct {
+
+		v.lazyinit()
+
+		if err := v.validate.Struct(obj); err != nil {
+			return error(err)
+		}
+	}
+
+	return nil
+}
+
+func (v *defaultValidator) Engine() interface{} {
+	v.lazyinit()
+	return v.validate
+}
+
+func (v *defaultValidator) lazyinit() {
+	v.once.Do(func() {
+		v.validate = validator.New()
+
+		// 依旧使用bingding tag兼容v8
+		v.validate.SetTagName("binding")
+
+		// 错误信息转换
+		en := en.New()
+		ValidatorUni = ut.New(en, en)
+		trans, _ := ValidatorUni.GetTranslator("en")
+		en_translations.RegisterDefaultTranslations(v.validate, trans)
+
+		v.validate.RegisterTagNameFunc(func(fld reflect.StructField) string {
+			name := strings.SplitN(fld.Tag.Get("comment"), ",", 2)[0]
+			if name == "-" {
+				return ""
+			}
+			return name
+		})
+	})
+}
+
+func kindOfData(data interface{}) reflect.Kind {
+
+	value := reflect.ValueOf(data)
+	valueType := value.Kind()
+
+	if valueType == reflect.Ptr {
+		valueType = value.Elem().Kind()
+	}
+	return valueType
+}