处理AI胡乱生成的乱摊子

vendor/github.com/gin-gonic/gin/binding/form_mapping.go

@@ -7,6 +7,7 @@ package binding
 import (
 	"errors"
 	"fmt"
+	"mime/multipart"
 	"reflect"
 	"strconv"
 	"strings"
@@ -164,6 +165,23 @@ func tryToSetValue(value reflect.Value, field reflect.StructField, setter setter
 	return setter.TrySet(value, field, tagValue, setOpt)
 }
 
+// BindUnmarshaler is the interface used to wrap the UnmarshalParam method.
+type BindUnmarshaler interface {
+	// UnmarshalParam decodes and assigns a value from an form or query param.
+	UnmarshalParam(param string) error
+}
+
+// trySetCustom tries to set a custom type value
+// If the value implements the BindUnmarshaler interface, it will be used to set the value, we will return `true`
+// to skip the default value setting.
+func trySetCustom(val string, value reflect.Value) (isSet bool, err error) {
+	switch v := value.Addr().Interface().(type) {
+	case BindUnmarshaler:
+		return true, v.UnmarshalParam(val)
+	}
+	return false, nil
+}
+
 func setByForm(value reflect.Value, field reflect.StructField, form map[string][]string, tagValue string, opt setOptions) (isSet bool, err error) {
 	vs, ok := form[tagValue]
 	if !ok && !opt.isDefaultExists {
@@ -193,6 +211,9 @@ func setByForm(value reflect.Value, field reflect.StructField, form map[string][
 		if len(vs) > 0 {
 			val = vs[0]
 		}
+		if ok, err := trySetCustom(val, value); ok {
+			return ok, err
+		}
 		return true, setWithProperType(val, value, field)
 	}
 }
@@ -235,10 +256,17 @@ func setWithProperType(val string, value reflect.Value, field reflect.StructFiel
 		switch value.Interface().(type) {
 		case time.Time:
 			return setTimeField(val, field, value)
+		case multipart.FileHeader:
+			return nil
 		}
 		return json.Unmarshal(bytesconv.StringToBytes(val), value.Addr().Interface())
 	case reflect.Map:
 		return json.Unmarshal(bytesconv.StringToBytes(val), value.Addr().Interface())
+	case reflect.Ptr:
+		if !value.Elem().IsValid() {
+			value.Set(reflect.New(value.Type().Elem()))
+		}
+		return setWithProperType(val, value.Elem(), field)
 	default:
 		return errUnknownType
 	}