在Spring Boot中，你可以通过实现ApplicationContextAware接口来获取ApplicationContext，然后使用它来获取并打印Bean的信息。以下是一个简单的示例：

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

@Component

public class BeanInfoPrinter implements ApplicationContextAware {

        private ApplicationContext applicationContext;

        @Override

        public void setApplicationContext(ApplicationContext applicationContext) {

                this.applicationContext = applicationContext;

        }

        

        public void printBeanInfo() {

                String[] beanNames = applicationContext.getBeanDefinitionNames();

                for (String beanName : beanNames) {

                        System.out.println(beanName);

                }

        }

}

在需要的时候，你可以注入BeanInfoPrinter并调用printBeanInfo方法来打印所有Bean的名字：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
@Service
public class SomeService {
 
    private final BeanInfoPrinter beanInfoPrinter;
 
    @Autowired
    public SomeService(BeanInfoPrinter beanInfoPrinter) {
        this.beanInfoPrinter = beanInfoPrinter;
    }
 
    public void printBeans() {
        beanInfoPrinter.printBeanInfo();
    }
}

当Spring Boot应用启动后，调用printBeans方法将会列出所有的Bean。