使用redis

------------恢复内容开始------------

1显示要安装redis(Redis Desktop Manager可视化工具,可装可不装)

这个安装教程很多,这里就不细讲了,需要注意的是一些路径,安装在哪个盘

输入cmd提示不是内部命令,就要转到相应的redis目录下执行 (输入下面两行命名就可以往redis中设置值了,get key 和set key values)

如果装有可视化工具的话,效果是这样的默认连接是一样的

在appsetting设置

"Redis": {
    "Default": {
      "Connection": "127.0.0.1:6379",
      "InstanceName": "local",
      "DefaultDB": 0
    }
  },

在startup中

            // redis缓存
            var section = Configuration.GetSection("Redis:Default");
            //连接字符串
            string _connectionString = section.GetSection("Connection").Value;
            //实例名称
            string _instanceName = section.GetSection("InstanceName").Value;
            //默认数据库 
            int _defaultDB = int.Parse(section.GetSection("DefaultDB"));

            services.AddSingleton(new RedisHelper(_connectionString, _instanceName, _defaultDB));

 

建一个帮助类,与redis进行交互

public class RedisHelper : IDisposable  (//引用空间注意是StackExchange.Redis)  
    {
        //连接字符串
        private string _connectionString;
        //实例名称
        private string _instanceName;
        //默认数据库
        private int _defaultDB;
        private ConcurrentDictionary<string, ConnectionMultiplexer> _connections;
        public RedisHelper(string connectionString, string instanceName, int defaultDB )
        {
            _connectionString = connectionString;
            _instanceName = instanceName;
            _defaultDB = defaultDB;
            _connections = new ConcurrentDictionary<string, ConnectionMultiplexer>();
        }

        /// <summary>
        /// 获取ConnectionMultiplexer
        /// </summary>
        /// <returns></returns>
        private ConnectionMultiplexer GetConnect()
        {
            return _connections.GetOrAdd(_instanceName, p => ConnectionMultiplexer.Connect(_connectionString));
        }

        /// <summary>
        /// 获取数据库
        /// </summary>
        /// <param name="configName"></param>
        /// <param name="db">/param>
        /// <returns></returns>
        public IDatabase GetDatabase()
        {
            return GetConnect().GetDatabase(_defaultDB);
        }

        public IServer GetServer(string configName = null, int endPointsIndex = 0)
        {
            var confOption = ConfigurationOptions.Parse(_connectionString);
            return GetConnect().GetServer(confOption.EndPoints[endPointsIndex]);
        }

        public ISubscriber GetSubscriber(string configName = null)
        {
            return GetConnect().GetSubscriber();
        }

        public void Dispose()
        {
            if (_connections != null && _connections.Count > 0)
            {
                foreach (var item in _connections.Values)
                {
                    item.Close();
                }
            }
        }
    }


控制器使用

  public class DemoController : Controller
    {
        private readonly IDatabase _redis;
        public DemoController(EFCoreDbContext dbContext, IMapper mapper, RedisHelper client)
        {
            _redis = client.GetDatabase();
        }
        [HttpGet]
        public string Redis()
        {
            // 往Redis里面存入数据(将object转json也可以存)
            _redis.StringSet("1", "11");
            // 从Redis里面取数据
            string name = _redis.StringGet("1");
            //从窗口设置的值
            string a = _redis.StringGet("a");
            return name;
        }
    }

nuget包是这个

 然后就可以在调试,运行成功。

 

posted @ 2020-08-15 16:04  青兰柳  阅读(132)  评论(0编辑  收藏  举报