Spring Integration Dispatcher has no subscribers for channel
问题 I'm using spring integration and its support for MQTT; I saw the spring integration documentation and my simple test case is to publish a message on a MQTT topic. The Spring documentation is located here: http://docs.spring.io/spring-integration/reference/html/mqtt.html#_configuring_with_java_configuration_15 I'm using these versions: spring 4.3.4 spring integration 4.3.5 I built this simple configuration class: @Configuration @IntegrationComponentScan public class