RongtongJin commented on issue #305:
URL: https://github.com/apache/rocketmq-spring/issues/305#issuecomment-742495496
You can do it this way
```java
/**
* StringConsumer
*/
@Service
@RocketMQMessageListener(topic = "${demo.rocketmq.topic}", consumerGroup =
"string_consumer", selectorExpression = "${demo.rocketmq.tag}")
public class StringConsumer implements RocketMQListener<String> ,
RocketMQPushConsumerLifecycleListener {
@Override
public void onMessage(String message) {
System.out.printf("------- StringConsumer received: %s \n", message);
}
public void prepareStart(DefaultMQPushConsumer consumer) {
consumer.setAllocateMessageQueueStrategy(new
AllocateMessageQueueXXXXX());
}
}
```
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