spring解决循环依赖

spring怎么解决的循环依赖问题？
三级缓存

一级缓存：

private final Map singletonObjects
 = new ConcurrentHashMap(64);

二级缓存：

private final Map earlySingletonObjects
 = new HashMap(16);
三级缓存：

private final Map> singletonFactories
 = new HashMap>(16);
 

private final Set registeredSingletons 
= new linkedHashSet(64);
 

private final Set singletonsCurrentlyInCreation =
    Collections.newSetFromMap(new ConcurrentHashMap(16));