Thanks , I've solved the problem.
PROBLEM SOLVING:At first, I reconstructed it with reference to the
https://github.com/spring-cloud/spring-cloud-stream-samples/tree/master/source-samples/jdbc-source . I added main class and rabbit binder. The stream is running as scheduled. I didn't think it was supposed to be this complicated, and then I switched to jdbc-source-rabbit, which is exactly what I expected