Springboot multi-module project, sometimes it will appear, error can't find the automatically injected service
springboot Field xxxService in required a bean of type
The implementation class of each service interface is annotated with @service, but the service is still not found.
Finally, the investigation found that because the project is a multi-module, the startup class is not in the same package or sub-package, which makes it impossible to automatically inject
Solution:
1. Add scanning @ComponentScan("com.demo") to the startup class to scan the upper package com.demo
@SpringBootApplication
@EnableSwagger2
@MapperScan("com.demo.dao")
@ComponentScan("com.demo")
public class TaskApplication {
public static void main(String[] args) {
SpringApplication.run(TaskApplication.class, args);
}
}
2. Adjust the position of TaskApplication startup class to the com.demo package
