@Override
	public List<SinaWeiboRecommendUser> listFollowByTag(String userId, String tagName) throws KankantuException, UserNotAuthorizeException {
		Set<String> set = sinaWeiboFollowDao.list(userId, tagName);
		if (null == set) {
			return null;
		}
		List<SinaWeiboRecommendUser> list = new ArrayList<SinaWeiboRecommendUser>();
		for (String uid : set) {
			try {
				SinaWeiboRecommendUser user = sinaWeiboRecommendUserService.getByUid(userId, uid);
				if (null == user) {
					continue;
				}
				list.add(user);
				
			} catch (WeiboException e) {
				continue;
			}
		}
		return list;
	}