Spring 循环依赖（circular reference）问题

spring的事务管理配置如下：
.....

<!-- 事务管理 -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>

<bean id="transactionInterceptor"
class="org.springframework.transaction.interceptor.TransactionInterceptor">
<property name="transactionManager" ref="transactionManager"/>
<property name="transactionAttributes">
<props>
<prop key="add*">PROPAGATION_REQUIRED</prop>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="insert*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="del*">PROPAGATION_REQUIRED</prop>
<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="*">PROPAGATION_REQUIRED</prop>

</props>
</property>
</bean>

<bean
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames">
<value>*Service,*Manager</value>
</property>
<property name="interceptorNames">
<list>
<value>transactionInterceptor</value>
</list>
</property>
</bean>

<bean class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor">
<property name="transactionInterceptor" ref="transactionInterceptor"/>
</bean>
......

程序在启动的时候，报错：
org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'transactionManager': Bean with name 'transactionManager' has been

injected into other beans [transactionInterceptor] in its raw version as part of a circular reference, but has eventually been wrapped (for example as part of auto-

proxy creation). This means that said other beans do not use the final version of the bean. This is often the result of over-eager type matching - consider using

'getBeanNamesOfType' with the 'allowEagerInit' flag turned off, for example.

出现了循环依赖的错误，终于发现是
<property name="beanNames">
   <value>*Service,*Manager</value>
</property>
里面的问题，transactionManager后边也是Manager。这样会把transactionInterceptor注入到transactionManager中，故将bean id="transactionManager"改成其他的名字不用Manager结尾，或者将*Manager改成其他的就不会出现这个错误了。
如果要改bean transactionManager 的名字，记得将transactionInterceptor中<property name="transactionManager" ref="transactionManager"/>
的ref="transactionManager"也改成对应的名字。

网上还发现了一种解决方法，发现也可行，不求甚解，先记下：
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"  lazy-init="true" >
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>

将bean id="transactionManager"延迟加载。

评论

1 楼 javaanddonet 2011-04-14  

请问：
楼主在服务层中注入的时候，采用的是构造方法注入还是Setter方法注入呢？