сделал Find_Tag_JSON()

micro/microfunctions.go

@@ -1868,3 +1868,19 @@ func Round_Float64_WithPrecision(x float64, precision int) float64 {
 	Otvet := math.Round(x*pow) / pow
 	return Otvet
 }
+
+// Find_Tag_JSON - возвращает тег json для полей структуры
+func Find_Tag_JSON(Struct1 any, FieldName string) (string, error) {
+	var Otvet string
+	var err error
+
+	field, ok := reflect.TypeOf(Struct1).Elem().FieldByName(FieldName)
+	if !ok {
+		err = fmt.Errorf("Field %s not found in type %T", FieldName, Struct1)
+		return Otvet, err
+	}
+
+	Otvet = field.Tag.Get("json")
+
+	return Otvet, err
+}

micro/microfunctions_test.go

@@ -1573,3 +1573,17 @@ func TestRound_Float64_WithPrecision2(t *testing.T) {
 		t.Errorf("Expected 1.1, but got %f", Otvet)
 	}
 }
+
+func TestFind_Tag_JSON(t *testing.T) {
+	type StructTest struct {
+		Test string `json:"test"`
+	}
+	StructTest1 := &StructTest{}
+	Otvet, err := Find_Tag_JSON(StructTest1, "Test")
+	if err != nil {
+		t.Errorf("Error: Expected nil, but got %v", err)
+	}
+	if Otvet != "test" {
+		t.Errorf("Expected 'test', but got %s", Otvet)
+	}
+}