不可见类有抽象父类，spring配置子类bean，注入父类，aop就可以切父类的方法

public class TestBeanChild {
    int b = 1;

    public TestBean createDefault() {
        return new TestBeanDefault();
    }
}

class TestBeanDefault extends TestBean{
     int  b=2;
}

包外面不能访问类TestBeanDefault

public abstract class TestBean {
    private int a =0;
 public void doBean(){
     System.out.println("1321");
 }
}

<bean id="a" class="com.yundaex.wms.config.TestBeanChild"  />
     <bean id="b" class="com.yundaex.wms.config.TestBeanChild" factory-bean="a"  factory-method="createDefault" />

   <aop:config proxy-target-class="true">
          <aop:aspect ref="ifmAspect">
             <aop:pointcut id="ifmAspectPointcut"
                expression="execution( * com.yundaex.wms.config.TestBean.*(..))
                    "/>
             <aop:around method="aroundMethod"  pointcut-ref="ifmAspectPointcut"/>
          </aop:aspect>
    </aop:config>

@Autowired
private TestBean dd;

dd为父类实例其实是子类的cglib的代理对象