hyperf 默认 demo 提示找不到 Redis,Redis 配置是对的，其它框架 Redis 使用正常。。。

<?php 
use Hyperf\Utils\ApplicationContext; 
$container = ApplicationContext::getContainer(); 
$redis = $container->get(\Redis::class); 
$result = $redis->keys('*');

[ERROR] Class 'Redis' not found[100] in /home/vagrant/code/hyperf/vendor/hyperf/redis/src/RedisConnection.php
[ERROR] #0 /home/vagrant/code/hyperf/vendor/hyperf/redis/src/RedisConnection.php(62): Hyperf\Redis\RedisConnection->reconnect()

REDIS_HOST=127.0.0.1
REDIS_AUTH=
REDIS_PORT=6379
REDIS_DB=0