What should I do if an error is reported when the project is started? See if you use Spring automatic injection correctly? @Autowired XxxService injection problem solved

problem

• @Autowired in the Controller layer to inject Service , it prompts Bean without

• After using the @Component injection in the Service interface, the startup project problem prompt:

  The web application [ROOT] appears to have started a thread named [DubboClientReconnectTimer-thread-2] but has failed to stop it.
  This is very likely to create a memory leak

  reason

• prompts that there is no Service in Bean:

  • Because Service injected into the Spring container, it can be through 161d06579da85d @Component or @Service

• uses annotations in the Service to inject into the container, the startup project will report an error :

  • Because the Service interface is injected, two Bean

  • injected into the Service interface, and the subclasses that implement the Service interface will also be injected into the container, so it will cause Dubbo repetitive thread error

    Solution

• On the implementation class ServiceImpl Service , use @Component or @Service annotation to Service into the Spring container

• If you are using Dubbo's SpringBoot project, you can use the following annotations in the Service implementation class

  @com.alibaba.dubbo.config.annotation.Service
  @org.springframework.stereotype.Service

• Note: To inject the Service implementation class into the container, not the Service interface

  Summarize

• Spring container injection rules