在Spring Boot中，您可以使用appContext.getBeanDefinitionNames()来获取Spring容器加载的所有bean。

1. CommandLineRunner作为界面

package com.mkyong;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

import java.util.Arrays;

@SpringBootApplication
public class Application implements CommandLineRunner {

    @Autowired
    private ApplicationContext appContext;

    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void run(String... args) throws Exception {

        String[] beans = appContext.getBeanDefinitionNames();
        Arrays.sort(beans);
        for (String bean : beans) {
            System.out.println(bean);
        }

    }

}

输出量

application
customerRepository
customerRepositoryImpl
dataSource
dataSourceInitializedPublisher
dataSourceInitializer
dataSourceInitializerPostProcessor
emBeanDefinitionRegistrarPostProcessor
entityManagerFactory
entityManagerFactoryBuilder
hikariPoolDataSourceMetadataProvider
jdbcTemplate
jpaContext
//...

2. CommandLineRunner作为Bean

只是打印加载的bean的不同方法。

package com.mkyong;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;

import java.util.Arrays;

@SpringBootApplication
public class Application {

    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }

    @Bean
    public CommandLineRunner run(ApplicationContext appContext) {
        return args -> {

            String[] beans = appContext.getBeanDefinitionNames();
            Arrays.stream(beans).sorted().forEach(System.out::println);

        };
    }

}

参考文献

1. CommandLineRunner Java文档
2. Spring Boot非Web应用程序示例

翻译自: https://mkyong.com/spring-boot/how-to-display-all-beans-loaded-by-spring-boot/