普通类使用spring容器管理的bean

这里最重要的是使用ApplicationContext，我们首先要实现ApplicationContextAware接口获取到ApplicationContext。在这里写了一个类实现ApplicationContextAware接口

/**
 * @author matao
 * @create 2020-08-05
 */
@Component
public class ApplicationContextUtil implements ApplicationContextAware {
    private static Logger logger = LoggerFactory.getLogger(AEService.class);
    protected static ApplicationContext context;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        context = applicationContext;
        logger.info("context{}",context.toString());
    }
    public static  T  getBean(String name) {
        //name表示其他要注入的注解name名
        logger.info("beanName{}",name);
        return (T) context.getBean(name);
    }

    public static  T getBean(Class requiredType) {
        logger.info("requiredType{}",requiredType);
        return context.getBean(requiredType);
    }
}

在这里要记得使用@Component注解，不然调用的时候会报空指针异常。
然后我们就可以用这个方法了，这里AEScheduler是交给容器管理的

@Component("AEScheduler")
public class AEScheduler {
    private Logger logger = LoggerFactory.getLogger(AEScheduler.class);

//    final long oneHours = 1000*60*60;

//    private static Map map = new ConcurrentHashMap();
    @Autowired
    private StringRedisTemplate redisTemplate;
    private RabbitAdmin rabbitAdmin;
    }

public class AEService  {
public void main(String[] args){
  AEScheduler aeScheduler = ApplicationContextUtil.getBean(AEScheduler.class);
          logger.info("aeschedule{}",aeScheduler);
}
}

这样我们就可以普通类获取spring管理的bean，就不用注入了。