不能支持Proxy对象的服务发布

不能支持Proxy对象的服务发布
当我们发布一个代理类的时候，在下面代码中会出现问题。

com.baidu.jprotobuf.pbrpc.server.RpcServiceRegistry

    /**
     * Register service.
     *
     * @param target the target
     */
    public void registerService(final Object target) {
        if (target == null) {
            throw new IllegalArgumentException("Param 'target' is null.");
        }
        Class<? extends Object> cls = target.getClass();
        ReflectionUtils.doWithMethods(cls, new ReflectionUtils.MethodCallback() {
            public void doWith(Method method) throws IllegalArgumentException, IllegalAccessException {
                ProtobufRPCService protobufPRCService = method.getAnnotation(ProtobufRPCService.class);
                if (protobufPRCService != null) {
                    doRegiterService(method, target, protobufPRCService);
                }
            }
        });
    }

在运行的时候，下面的代码，拿到的类为"class com.sun.proxy.$Proxy81"。

Class<? extends Object> cls = target.getClass();

这就导致在下面的语句中，我们拿不到需要注册的方法.

ProtobufRPCService protobufPRCService = method.getAnnotation(ProtobufRPCService.class);

我们的实现代码是这样的。

@Slf4j
@RpcExporter(port = "1033", rpcServerOptionsBeanName = "rpcServerOptions")
@Service(DemoConstants.PMP_SERVICE)
public class PmpServiceImpl implements PmpService {

    @Autowired
    private HelloWorldRunService helloWorldRunService;

    @ProtobufRPCService(serviceName = DemoConstants.PMP_SERVICE, methodName = "helloWorld")
    @Override
    public HelloWorldResponse helloWorld(HelloWorldRequest request) {
        log.info("Called by request:" + request);
        HelloWorldResponse response = helloWorldRunService.helloWorld(request);
        return response;
    }

}

实际上我们可以通过下面的代码，拿到被代理类，不知道开发者不做这件事情是否有其他考虑？

public static Object getJdkDynamicProxyTargetObject(Object proxy) throws Exception {  
    InvocationHandler invocationHandler = Proxy.getInvocationHandler(proxy);  
    Object target = ((AdvisedSupport) ReflectionUtils.getFieldValue(invocationHandler,"advised")).getTargetSource().getTarget();  
    return target;  
}  

Start at com.baidu.jprotobuf.pbrpc.server.RpcServiceRegistry.registerService and trace how ReflectionUtils.doWithMethods inspects the target class and ProtobufRPCService annotations. Compare the proxy class shown in the report with the underlying PmpServiceImpl example, then verify that publishing a proxied service discovers the annotated helloWorld method without breaking direct service registration.