Spring获取管理的所有的Bean

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class RestfulApplication {

    private static ApplicationContext applicationContext;

    public static void main(String[] args) {
        applicationContext= SpringApplication.run(RestfulApplication.class, args);

        displayAllBeans();

    }
    public static void displayAllBeans() {
        String[] allBeanNames = applicationContext.getBeanDefinitionNames();
        for(String beanName : allBeanNames) {
            System.out.println(beanName);
        }
    }
}