springboot实例化ApplicationContext - 乐享诚美

司夜

发布于 2023-10-18 10:34:14

1190

发布于 2023-10-18 10:34:14

1.直接通过@Resource注解注入

@Resource

ApplicationContext applicationContext;

2.实现ApplicationContextAware接口

@Component

public class SpringBeanUtils implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

        SpringBeanUtils.applicationContext = applicationContext;

    }

    public ApplicationContext getApplicationContext(){

        return applicationContext;

    }

}

3.在启动类main方法中设置

ConfigurableApplicationContext run = SpringApplication.run(DemoApplication.class, args);

SpringBeanUtils.applicationContext = run;

4.实现ApplicationListener接口

@Component

public class CustomApplicationListener implements ApplicationListener<ApplicationContextEvent> {

  @Override

  public void onApplicationEvent(ApplicationContextEvent event) {        

     SpringBeanUtils.applicationContext = event.getApplicationContext();

  }

}

5.实现ApplicationContextInitializer接口

@Component

public class CustomApplicationContextInitializer implements ApplicationContextInitializer {

  @Override

  public void initialize(ConfigurableApplicationContext applicationContext) {    

     SpringBeanUtils.applicationContext = applicationContext;

  }

}

本文参与腾讯云自媒体分享计划，分享自作者个人站点/博客。

原始发表：2022-11-10，如有侵权请联系 cloudcommunity@tencent.com 删除

class