springboot中帮助类中获取bean

@Component
public class OperationUtil implements ApplicationContextAware {
　　 // 获取redis接口
    private static RedisService redisService;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(redisService == null){
　　　　　　　// 从applicationContext中获取bean
            OperationUtil.redisService = (RedisService)applicationContext.getBean("redisService");
        }

    }

    public static Operation saveOperation(Long hid, Long oid, Long pid, String content){
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        Operation op = null;
        String token = request.getHeader("token");
        if (StringUtils.isNotEmpty(token)) {
            JWToken jwToken = new JWToken();
            //获取解析token中的值
            HashMap<String, Object> map = jwToken.parseJWT(token);
            Long uid = null;
            String account = null;
            if (map != null) {
                if (map.get("uid") != null && map.get("uid").toString() != "") {
                    uid = Long.valueOf(map.get("uid").toString());
                /*User user = userDao.getUserByUid(uid);
                if(user != null && user.getSid() != null){
                    sid = user.getSid();
                }*/
                    if((hid == null || hid <= 0)){
                        if(redisService.get("hospital" + uid) != null){
                            hid = Long.valueOf((Integer)redisService.get("hospital" + uid));
                        }
                    }
                }
                if (map.get("account") != null) {
                    account = (String) map.get("account");
                }
                op = new Operation(hid, oid, pid, uid, account, content);
            }
        }else{
            op = new Operation(null, null, null, null, null, content);
        }
        return op;
    }

    public static Long getUserId(){
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        String token = request.getHeader("token");
        JWToken jwToken = new JWToken();
        //获取解析token中的值
        HashMap<String,Object> map = jwToken.parseJWT(token);
        Long uid = null;
        if(map != null) {
            if (map.get("uid") != null && map.get("uid").toString() != "") {
                uid = Long.valueOf(map.get("uid").toString());
            }
        }
        return uid;
    }


}