spring mvc fastjson 循环引用问题$ref':xxx

$ref':xxx

<!--fastJson注入深度解析引用对象-->
<bean id="disableCircularReferenceDetect" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
    <property name="staticField" value="com.alibaba.fastjson.serializer.SerializerFeature.DisableCircularReferenceDetect" />
</bean>

<!-- Configures the @Controller programming model -->
<mvc:annotation-driven>
    <mvc:message-converters>
        <bean id="fastJsonHttpMessageConverter"
class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
            <property name="features">
                <list>
                   <ref bean="disableCircularReferenceDetect" />
                </list>
            </property>
        </bean>
</mvc:annotation-driven>