问二义性工厂方法与bean“容器”中的匹配

EN

    @Bean
    public SimpleMessageListenerContainer container(ConnectionFactory cf, DatabaseTransactionListener listener) {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(cf);
        container.setQueueNames(QUEUE_DATABASE_TRANSACTION);
        container.setMessageListener(new MessageListenerAdapter(listener, "databaseTransaction"));
        container.setMessageConverter(new SerializerMessageConverter());
        return container;
    }

    @Component
    class DatabaseTransactionListener {

        public TransactionsBean databaseTransaction(TransactionsBean ro) {
            TransactionsBean obj = new TransactionsBean();
            System.out.println("!!!! Performing TransactionsBean processing !!!!");
            obj.setTransaction_id(" ??? some_id: " + ro.getMerchant_id());
            return obj;
        }
    }

    @Bean
    public SimpleMessageListenerContainer container(ConnectionFactory cf, ApiAttemptListener listener) {
        SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(cf);
        container.setQueueNames(QUEUE_DATABASE_API_ATTEMPT);
        container.setMessageListener(new MessageListenerAdapter(listener, "apiattemptTransaction"));
        container.setMessageConverter(new SerializerMessageConverter());
        return container;
    }

    @Component
    class ApiAttemptListener {

        public ApiAttemptsBean apiattemptTransaction(ApiAttemptsBean ro) {
            ApiAttemptsBean obj = new ApiAttemptsBean();
            System.out.println("!!!! Performing ApiAttempts processing !!!!");
            obj.setMerchant_id(454545);
            return obj;
        }
    }