.net core 使用redis 基于 StackExchange.Redis

一.添加引用包

StackExchange.Redis

Microsoft.Extensions.Configuration

 

二.修改配置文件 appsettings.json

 

{
    "RedisConfig": {
        "Redis_Default": {
            "Connection": "127.0.0.1: 6379",
            "InstanceName": "Redis1: "
        },
        "Redis_6": {
            "Connection": "127.0.0.1: 6379",
            "DefaultDatabase": 6,
            "InstanceName": "Redis2: "
        }
    }
}

三.简单封装

RedisClient.cs类

 

public class RedisClient : IDisposable
{
    private IConfigurationRoot _config;
    private ConcurrentDictionary<string, ConnectionMultiplexer> _connections;
    public RedisClient(IConfigurationRoot config)
    {
        _config = config;
        _connections = new ConcurrentDictionary<string, ConnectionMultiplexer>();
    }
    /// <summary>
    /// 获取ConnectionMultiplexer
    /// </summary>
    /// <param name="redisConfig">RedisConfig配置文件</param>
    /// <returns></returns>
    private ConnectionMultiplexer GetConnect(IConfigurationSection redisConfig)
    {
        var redisInstanceName = redisConfig["InstanceName"];
        var connStr = redisConfig["Connection"];
        return _connections.GetOrAdd(redisInstanceName, p => ConnectionMultiplexer.Connect(connStr));
    }
    /// <summary>
    /// 检查入参数
    /// </summary>
    /// <param name="configName">RedisConfig配置文件中的 Redis_Default/Redis_6 名称</param>
    /// <returns></returns>
    private IConfigurationSection CheckeConfig(string configName)
    {
        IConfigurationSection redisConfig = _config.GetSection("RedisConfig").GetSection(configName);
        if (redisConfig == null)
        {
            throw new ArgumentNullException($"{configName}找不到对应的RedisConfig配置！");
        }
        var redisInstanceName = redisConfig["InstanceName"];
        var connStr = redisConfig["Connection"];
        if (string.IsNullOrEmpty(redisInstanceName))
        {
            throw new ArgumentNullException($"{configName}找不到对应的InstanceName");
        }
        if (string.IsNullOrEmpty(connStr))
        {
            throw new ArgumentNullException($"{configName}找不到对应的Connection");
        }
        return redisConfig;
    }
    /// <summary>
    /// 获取数据库
    /// </summary>
    /// <param name="configName"></param>
    /// <param name="db">默认为0：优先代码的db配置，其次config中的配置</param>
    /// <returns></returns>
    public IDatabase GetDatabase(string configName = null, int? db = null)
    {
        int defaultDb = 0;
        IConfigurationSection redisConfig = CheckeConfig(configName);
        if (db.HasValue)
        {
            defaultDb = db.Value;
        }
        else
        {
            var strDefalutDatabase = redisConfig["DefaultDatabase"];
            if (!string.IsNullOrEmpty(strDefalutDatabase) && Int32.TryParse(strDefalutDatabase, out var intDefaultDatabase))
            {
                defaultDb = intDefaultDatabase;
            }
        }
        return GetConnect(redisConfig).GetDatabase(defaultDb);
    }

    public IServer GetServer(string configName = null, int endPointsIndex = 0)
    {
        IConfigurationSection redisConfig = CheckeConfig(configName);
        var connStr = redisConfig["Connection"];

        var confOption = ConfigurationOptions.Parse((string)connStr);
        return GetConnect(redisConfig).GetServer(confOption.EndPoints[endPointsIndex]);
    }

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

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

 

因为RedisClient 中使用了ConcurrentDictionary

所以，有了RedisClientSingleton.cs类

public class RedisClientSingleton
{
    private static RedisClient _redisClinet;
    private RedisClientSingleton() { }

    private static object _lockObj = new object();
    public static RedisClient GetInstance(IConfigurationRoot config)
    {
        if (_redisClinet == null)
        {
            lock (_lockObj)
            {
                if (_redisClinet == null)
                {
                    _redisClinet = new RedisClient(config);
                }
            }
        }
        return _redisClinet;
    }
}

四.测试

1、控制台程序

1）创建一个Controller程序

2）添加引用包

Microsoft.Extensions.Configuration

Microsoft.Extensions.Configuration.Json

3）添加appsettings.json

添加以下

"RedisConfig": {
    "Redis_Default": {
      "Connection": "127.0.0.1:6379", 
      "InstanceName": "Redis1:"
    },
    "Redis_6": {
      "Connection": "127.0.0.1:6379",
      "DefaultDatabase": 6,
      "InstanceName": "Redis2:"
    }
  }

4）修改Program类

①添加引用using Microsoft.Extensions.Configuration;

②修改Main

 static void Main(string[] args)
 {
  　　var builder = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
               .AddJsonFile("appsettings.json");
            IConfigurationRoot configuration = builder.Build();

 　　var redisClient = RedisClientSingleton.GetInstance(configuration); 9  　　var redisDatabase = redisClient.GetDatabase("Redis_Default");

 　　redisDatabase.StringSet("TestStrKey", "TestStrValue");
12 }

③运行后可以看到

 

2、web程序

①创建一个core的mvc项目

②修改Startup.cs文件

修改ConfigureServices函数

public void ConfigureServices(IServiceCollection services)
{
    ...
    services.AddSingleton(Configuration);
    ...
}

其中的Configuration是 public IConfigurationRoot Configuration { get; }

③创建一个TestController

在修改构造函数

SimpleRedisExt _redisExt;

public TokenTranslateController(IConfigurationRoot config)//, IConfigurationRoot config)
{
    _config = config;
    IDatabase redisDataBase = RedisClientSingleton.GetInstance(_config).GetDatabase("Redis_Default");
}
 
public string Post(string value)
{
    redisDataBase.StringSet("TestMvcRedis", value);
}

④运行value = TestMvcRedisValue 后得到

随手写的，写得比较糙。