What is springboot auto configuration?

SpringBoot Automatic configuration of , refer to SpringBoot Some configuration classes will be automatically bean Sign up for ioc Containers , We can use it where we need it @autowired perhaps @resource Wait for annotations to use it . ​ “ Automatically ” The expression of is that we only need to introduce the package we want to use , We don't care about the configuration at all ,springboot These configurations are automatically injected bean, We use these directly bean that will do .