scan方法里面会通过递归方式使用java反射api从组件类getAnnotations以便获取到所有的注解信息，代码较多，此处不展开记录。

Condition排序

• 判断Condition类实现了PriorityOrdered接口，并使用PriorityOrdered进行排序
• 判断Condition类实现了Ordered接口，并使用Ordered进行排序
• 从Condition类获取Order注解，并使用Order注解的值进行排序

AnnotationAwareOrderComparator.sort(conditions);public static void sort(List list) {if (list.size() > 1) {list.sort(INSTANCE); // 这里的Comparator使用的是AnnotationAwareOrderComparator实现类}
}

AnnotationAwareOrderComparator实现类：

public class AnnotationAwareOrderComparator extends OrderComparator {@Overrideprotected Integer findOrder(Object obj) {// 先使用父类方法获取排序，其实就是判断Ordered实现并获取排序，在本例中显然获取不到Integer order = super.findOrder(obj);if (order != null) {return order;}// 从类标注的注解中获取排序return findOrderFromAnnotation(obj);}private Integer findOrderFromAnnotation(Object obj) {AnnotatedElement element = (obj instanceof AnnotatedElement ?(AnnotatedElement) obj : obj.getClass());MergedAnnotations annotations = MergedAnnotations.from(element, SearchStrategy.TYPE_HIERARCHY);// 从类标注的注解中获取排序，比如Order注解，此处不展开记录了Integer order = OrderUtils.getOrderFromAnnotations(element, annotations);if (order == null && obj instanceof DecoratingProxy) {return findOrderFromAnnotation(((DecoratingProxy) obj).getDecoratedClass());}return order;}@Overridepublic Integer getPriority(Object obj) {if (obj instanceof Class) {return OrderUtils.getPriority((Class) obj);}Integer priority = OrderUtils.getPriority(obj.getClass());if (priority == null  && obj instanceof DecoratingProxy) {return getPriority(((DecoratingProxy) obj).getDecoratedClass());}return priority;}
}public class OrderComparator implements Comparator