fix(ymt)：使用登记，场内机动车辆使用登记审核完成后，杨凌区的监管码、使用登记证编号生成规则错误

amos-boot-system-tzs/amos-boot-module-ymt/amos-boot-module-ymt-biz/src/main/java/com/yeejoin/amos/boot/module/ymt/biz/service/impl/EquipmentCategoryServiceImpl.java

@@ -437,7 +437,7 @@ public class EquipmentCategoryServiceImpl extends BaseService<EquipmentCategoryD
         if ("null".equals(equipCategory) || "null".equals(city) || "null".equals(county)) {
             throw new BadRequest("请求参数不全，请查看参数中是否携带 cityCode、countyCode、equCategory 三个参数及对应值");
         }
-        isNotXiXian = "null".equals(String.valueOf(map.get("isXiXian"))) ? "0" : "1";
+        isNotXiXian = Optional.ofNullable(map.get("isXiXian")).orElse("0").toString();
         // 生成码
         EquipmentCategoryServiceImpl categoryService = (EquipmentCategoryServiceImpl) AopContext.currentProxy();
         Map<String, String> codeMap = creatCode(isNotXiXian, city, county, equipCategory, "null", "null");