content: package com.lxr.iot.util;
  
  import org.springframework.beans.BeansException;
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.ApplicationContextAware;
  import org.springframework.stereotype.Component;
  /**
   * 获取 spring当前bean
   *
   * @author lxr
   * @create 2017-11-21 19:56
   **/
  @Component
  public class SpringBeanUtils  implements ApplicationContextAware {
  
      private static ApplicationContext applicationContext;
  
      @Override
      public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
          if(SpringBeanUtils.applicationContext == null) {
              SpringBeanUtils.applicationContext = applicationContext;
          }
      }
  
      //获取applicationContext
      public static ApplicationContext getApplicationContext() {
          return applicationContext;
      }
  
      //通过name获取 Bean.
      public static Object getBean(String name){
          return getApplicationContext().getBean(name);
      }
  
      //通过class获取Bean.
      public static <T> T getBean(Class<T> clazz){
          return getApplicationContext().getBean(clazz);
      }
  
      //通过name,以及Clazz返回指定的Bean
      public static <T> T getBean(String name,Class<T> clazz){
          return getApplicationContext().getBean(name, clazz);
      }
  
  }
  