RockteMQ-AI commented on issue #677:
URL:
https://github.com/apache/rocketmq-spring/issues/677#issuecomment-5223767825
**Issue Evaluation**
Category: `question` | Status: **Answered**
In `rocketmq-v5-client-spring-boot-starter`, message keys can be set when
sending messages via `RocketMQTemplate`:
```java
Message<String> msg = MessageBuilder.withPayload("hello")
.setHeader(MessageConst.PROPERTY_KEYS, "your-key-value")
.build();
rocketMQTemplate.syncSend("topic", msg);
```
The key is set via the `MessageConst.PROPERTY_KEYS` header in the Spring
Message builder.
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