Sofaboot之ServiceFactoryBean/ReferenceFactoryBean

    ServiceFactoryBean和ReferenceFactoryBean都是FactoryBean，實現了FactoryBean，重要的是getObject()和getType()方法。

@Override
public Object getObject() throws Exception {
    return service;
}

@Override
public Class<?> getObjectType() {
    return service != null ? service.getClass() : Service.class;
}