更新redis数据(java)

List<String> list=new ArrayList<>();
    list.add("root");
    for (int i = 0; i < list.size(); i++) {
        List values = redisTemplate.boundHashOps(list.get(i)).values();
        if (CollectionUtil.isNotEmpty(values)){
            list.addAll(values);
        }
    }
    //清空所有key
    redisTemplate.delete(list);

    //从新加载mysql
    List<ResPosition> positions = list();
    for (ResPosition position : positions) {
        saveRedisPosition(position);
    }

}