Illegal overloaded getter method with ambiguous type for property

Exception in thread "main" org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Illegal overloaded getter method with ambiguous type for property tradeType in class class com.honzh.biz.database.entity.OrderBase. This breaks the JavaBeans specification and can cause unpredicatble results. Exception in thread "main" org.mybatis.spring.M