问Java导出子类:类强制转换异常

EN

public void bind(Object objectInstance) {

    try {

        Enhancer classEnhancer = new Enhancer();
        classEnhancer.setSuperclass(objectInstance.getClass());
        classEnhancer.setInterfaces(new Class[]{Remote.class});
        classEnhancer.setCallback(new MethodInterceptor() {
            @Override
            public Object intercept(Object obj, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
                return methodProxy.invokeSuper(obj, args);
            }
        });
        Object proxy = classEnhancer.create();

        Remote stub =
                (java.rmi.Remote)UnicastRemoteObject.exportObject((Remote)proxy, 0);
        Registry registry = LocateRegistry.getRegistry();
        registry.rebind("Object", stub);
        System.out.println("object instance bound");
    } catch (RemoteException e) {
        System.out.print("error : " + e.getMessage());
        e.printStackTrace();
    } catch (Throwable t) {
        t.printStackTrace();
    }
}