工具类从spring里面获取对象

1. 创建工具类

   /**

   • spring容器的相关方法，如根据名称获取spring实例
   • @author 天真热
   • @create 2022-04-28 9:55
   • @desc
     **/

   import org.springframework.beans.BeansException;
   import org.springframework.context.ApplicationContext;
   import org.springframework.context.ApplicationContextAware;
   import org.springframework.stereotype.Component;

   @Component
   public class SpringContextUtils implements ApplicationContextAware {
   private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtils.applicationContext = applicationContext;
    }
   
    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }
   
    public static <T> T getBean(Class<T> requiredType) {
        return applicationContext.getBean(requiredType);
    }
   
    public static <T> T getBean(String name, Class<T> requiredType) {
        return applicationContext.getBean(name, requiredType);
    }
   
    public static boolean containsBean(String name) {
        return applicationContext.containsBean(name);
    }
   
    public static boolean isSingleton(String name) {
        return applicationContext.isSingleton(name);
    }
   
    public static Class<? extends Object> getType(String name) {
        return applicationContext.getType(name);
    }
   

   }

2.调用

ps：正常我们不指定类注入到spring的名称，默认都是使用"首字母小写的类名"作为名称

 TaskRunKafkaLogService taskRunKafkaLogService = (TaskRunKafkaLogService) SpringContextUtils.getBean("taskRunKafkaLogServiceImpl");