@Component+@PostConstruct注入bean

@Component
public class MyUtil {
    @Resource
    private CacheUtils cacheUtils;

    public static MyUtil myUtil;

   @PostConstruct
   public void init(){
       myUtil = this;
      myUtil.cacheUtils = this.cacheUtils;
   }

   public static MyUtil get(){
       return myUtil;
    }
}
//使用
MyUtil myUtil = MyUtil.get();