缓存供应商变更：j2cache

<!-- https://mvnrepository.com/artifact/net.oschina.j2cache/j2cache-core -->
        <dependency>
            <groupId>net.oschina.j2cache</groupId>
            <artifactId>j2cache-core</artifactId>
            <version>2.8.4-release</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/net.oschina.j2cache/j2cache-spring-boot2-starter -->
        <dependency>
            <groupId>net.oschina.j2cache</groupId>
            <artifactId>j2cache-spring-boot2-starter</artifactId>
            <version>2.8.0-release</version>
        </dependency>

        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
        </dependency>

j2cache:
  config-location: j2cache.properties

# 一级缓存的配置
j2cache.L1.provider_class  = ehcache
ehcache.configXml = ehcache.xml

# 设置是否启用二级缓存
j2cache.l2-cache-open = false

# 二级缓存的配置
j2cache.L2.provider_class=net.oschina.j2cache.cache.support.redis.SpringRedisProvider
j2cache.L2.config_section = redis
redis.hosts = localhost:6379
redis.password = 123456

# 一级缓存的数据如何到达二级缓存
j2cache.broadcast = net.oschina.j2cache.cache.support.redis.SpringRedisPubSubPolicy

    @Autowired
    private CacheChannel cacheChannel;

    @Override
    public String sendCodeToSMS(String tele) {
        String code = codeUtils.generator(tele);
        cacheChannel.set("sms",tele,code);
        return code;
    }

    @Override
    public Boolean checkCode(SMSCode smsCode) {
        String code = cacheChannel.get("sms", smsCode.getTele()).asString();
        return smsCode.getCode().equals(code);
    }