ldcsaa opened a new issue, #782:
URL: https://github.com/apache/rocketmq-spring/issues/782
**consumerGroup 必须为配置值，并且配置值必须存在时才能启动成功！**
1. consumerGroup 为字面常量值时启动失败
```java
@Component
@RocketMQMessageListener
(
endpoints = "${rocketmq-delay.push-consumer.endpoints}",
topic = "delay-group-001",
// consumerGroup 为字面常量
consumerGroup = "test-delay-topic-001"
)
public class DelayMessageListener implements RocketMQListener{
// ...
}
```
2. consumerGroup 为包含默认值的配置属性值，当配置属性不存在时启动失败
```java
@Component
@RocketMQMessageListener
(
endpoints = "${rocketmq-delay.push-consumer.endpoints}",
topic = "test-delay-topic-001",
// consumerGroup 为包含默认值的配置属性值，但配置属性不存
consumerGroup =
"${rocketmq-delay.push-consumer.consumer-group-xxxxxx:delay-group-001}"
)
public class DelayMessageListener implements RocketMQListener{
// ...
}
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