springboot dubbo不支持protobuf吗？

`@DubboService
public class ProtoDemoService implements ProtoDemoServiceDubbo.IProtoDemoService {

@Value("${dubbo.application.name}")
private String serverName;

@Override
public HelloReply sayHello(HelloRequest request) {
HelloReply.Builder builder = HelloReply.newBuilder();
builder.setMessage("Hello " + request.getName() + ":" + serverName);
return builder.build();
}

@Override
public CompletableFuture sayHelloAsync(HelloRequest request) {
return CompletableFuture.completedFuture(sayHello(request));
}
}
`
注册中心没有注册服务，启动consumer提示：
Failed to check the status of the service hk.grwth.vod.rpc.ProtoDemoServiceDubbo$IProtoDemoService. No provider available for the service hk.grwth.vod.rpc.ProtoDemoServiceDubbo$IProtoDemoService