aws sns使用spring cloud aws无法订阅

Question

您好我正在尝试在我的spring端点代码中获取aws sns消息。我正在使用spring cloud aws。我已使用访问权限和密钥设置配置。然而，该消息在待定订阅中被触发。我的控制器类是：

@Controller
@RequestMapping("/sns/receive")
public class SnsEndpointController1 {

@NotificationMessageMapping
public void receiveNotification(@NotificationMessage String message, @NotificationSubject String subject) {
    // ...
}

@NotificationSubscriptionMapping
public void confirmSubscription(NotificationStatus notificationStatus) {
    notificationStatus.confirmSubscription();
}
}

我的xml文件是：

    <mvc:annotation-driven>
    <mvc:argument-resolvers>
       <ref bean="notificationResolver" />
    </mvc:argument-resolvers>
</mvc:annotation-driven> 
<aws-messaging:notification-argument-resolver id="notificationResolver" />   
     <aws-context:context-credentials>
              <aws-context:instance-profile-credentials/>
              <aws-context:simple-credentials access-key="....."
                                              secret-key="....."/>
     </aws-context:context-credentials>
     <aws-context:context-region region="...."/>
</beans>  

请让我知道我错过了什么。