Use @Validated and @Valid with spring validator

I have a java bean being used to send JSON messages to a spring @RestController and I have bean validation setup and running just fine using @Valid. But I want to move to Protobuf/Thrift and move away from REST. It is an internal API and a lot of big companies have done away with REST internally. What this really means is that I no longer have control of the message objects - they are generated externally. I can't put annotations on them anymore.

So now my validation has to be programmatic. How do I do this? I have coded up a Validator and it works just great. But it doesn't use the nice @Valid annotation. I have to do the following:

@Service
public StuffEndpoint implements StuffThriftDef.Iface {

    @Autowired
    private MyValidator myValidator;

    public void things(MyMessage msg) throws BindException {
        BindingResult errors = new BeanPropertyBindingResult(msg, msg.getClass().getName());
        errors = myValidator.validate(msg);
        if (errors.hasErrors()) {
            throw new BindException(errors);
        } else {
            doRealWork();
        }
    }
}

This stinks. I have to do this in every single method. Now, I can put a lot of that into one method that throws BindException and that makes it one line of code to add to every method. But that's still not great.

What I want is to see it look like this:

@Service
@Validated
public StuffEndpoint implements StuffThriftDef.Iface {

    public void things(@Valid MyMessage msg) {
        doRealWork();
    }
}

And still get the same result. Remember, my bean has no annotations. And yes, I know I can use the @InitBinder annotation on a method. But that only works for web requests.

I don't mind injecting the correct Validator into this class, but I would prefer if my ValidatorFactory could pull the correct one based on the supports() method.

Is this possible? Is there a way to configure bean validation to actually use Spring validation instead? Do I have to hijack a Aspect somewhere? Hack into the LocalValidatorFactory or the MethodValidationPostProcessor?

Thanks.