Net Core Redis使用

.Net Core Redis使用

Redis作为NoSQL数据库，在很多项目场景中使用到。本文主要讲解如何在dotNet Core的环境下使用Redis进行项目开发。

项目环境

• dot net Core 2.2
• StackExchang.Redis 2.1.30

Redis 使用

• 1.新建项目,创建类库
• 2.创建Redis 接口，此处命名为IRedisService

/// 

    /// Redis 接口
    /// 
    public interface IRedisService
    {
        /// 

        /// Redis get命令
        /// 
        ///  键
        /// 
        dynamic GetRedisValue(string key);

        /// 

        /// Redis set 命令
        /// 
        ///  键
        /// 值
        /// 
        bool SetRedisValue(dynamic key, dynamic value);

        /// 

        /// Redis set 命令 设置过期时间 ttl 
        /// 
        /// 
        /// 
        /// 
        /// 
        bool SetRedisValue(dynamic key, dynamic value, TimeSpan time);

        /// 

        /// Redis 获取字符串类型的key
        /// 
        ///  字符串类型的key
        /// 
        dynamic GetRedisStringValue(string key);

        /// 

        /// Redis 设置字符串类型的过期时间
        /// 
        /// 
        /// 
        /// 
        /// 
        bool SetRedisStringValue(string key, string value, TimeSpan time);

        /// 

        /// 删除key
        /// 
        /// 
        /// 
        bool RemoveRedisValue(string key);

        /// 

        /// 存储字符串key-value到指定的redis数据库中
        /// 
        /// 
        /// 
        /// 
        /// 
        bool SetRedisStringValueToSelectDb(string key, string value, int dbNumber = -1);

        /// 

        /// 存储字符串key-value到指定的redis数据库中
        /// 
        /// 键
        /// 值
        /// 数据库编号
        /// 过期时间
        /// 
        bool SetRedisStringValueTimeSpanToSelectDb(string key, string value, TimeSpan time, int dbNumber = -1);

        /// 

        /// 指定数据库中获取指定key的value
        /// 
        /// 字符串类型键
        /// 数据库编码 默认-1
        /// 
        dynamic GetRedisValueSelectDb(string key,int dbNumber = -1);

        /// 

        /// 指定数据库中删除指定key的value
        /// 
        /// 键
        /// 数据库编码 默认-1
        /// 
        bool DeleteRedisValueSelectDb(string key, int dbNumber = -1);

        /// 

        /// 指定Redis数据库修改key的value
        /// 
        /// 
        /// 
        /// 
        bool EditRedisStringValueSelectDb(string key, string value, int dbNumber = -1);
    }

• 3.创建Redis类，此处命名为RedisServiceHelp

public class RedisServiceHelp : IRedisService
    {
        private string  _redisConnection {get;set;}

        public RedisServiceHelp()
        {
            _redisConnection = "192.168.2.**:6379,password=,allowadmin=true,ConnectTimeout=65535,syncTimeout=65535";
        }
        public dynamic GetRedisStringValue(string key)
        {
            dynamic ret = null;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    var newobj = db.StringGet(key, CommandFlags.None);
                    ret = Newtonsoft.Json.JsonConvert.DeserializeObject(newobj);
                    
                }

            }
            catch (Exception ex)
            {
                ret = null;
            }
            return ret;
        }

        public dynamic GetRedisValue(string key)
        {
            dynamic ret = null;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    var newobj = db.StringGet(key, CommandFlags.None);
                    ret = (dynamic)(newobj);
                }

            }
            catch (Exception ex)
            {
                ret = null;
            }
            return ret;
        }

        public bool RemoveRedisValue(string key)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    ret = db.KeyDelete(key);
                }
            }
            catch (Exception ex)
            {

            }
            return ret;
        }

        public bool SetRedisStringValue(string key, string value, TimeSpan time)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    ret = db.StringSet(key, value, time);
                }
            }
            catch (Exception ex)
            {

            }
            return ret;
        }

        public bool SetRedisValue(dynamic key, dynamic value)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    ret = db.StringSet(key, Newtonsoft.Json.JsonConvert.SerializeObject(value));
                }

            }
            catch (Exception ex)
            {

            }
            return ret;
        }

        public bool SetRedisValue(dynamic key, dynamic value, TimeSpan time)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase();
                    ret = db.StringSet(key, Newtonsoft.Json.JsonConvert.SerializeObject(value), time);
                }

            }
            catch (Exception ex)
            {

            }
            return ret;
        }

        
        public bool SetRedisStringValueToSelectDb(string key, string value, int dbNumber = -1)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase(dbNumber);
                    ret = db.StringSet(key, Newtonsoft.Json.JsonConvert.SerializeObject(value));
                }
            }
            catch (Exception)
            {

                throw;
            }
            return ret;
        }

        public bool SetRedisStringValueTimeSpanToSelectDb(string key, string value, TimeSpan time, int dbNumber = -1)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase(dbNumber);
                    ret = db.StringSet(key, Newtonsoft.Json.JsonConvert.SerializeObject(value), time);
                }
            }
            catch (Exception)
            {

                throw;
            }
            return ret;
        }

        public dynamic GetRedisValueSelectDb(string key, int dbNumber = -1)
        {
            dynamic ret = null;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase(dbNumber);
                    var newobj = db.StringGet(key, CommandFlags.None);
                    ret = Newtonsoft.Json.JsonConvert.DeserializeObject(newobj);
                }
            }
            catch (Exception)
            {
                ret = null;
            }
            return ret;
        }

        public bool DeleteRedisValueSelectDb(string key, int dbNumber = -1)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase(dbNumber);
                    ret = db.KeyDelete(key);
                }

            }
            catch (Exception)
            {
                ret = false;
            }
            return ret;
        }

        public bool EditRedisStringValueSelectDb(string key,string value, int dbNumber = -1)
        {
            var ret = false;
            try
            {
                using (ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(_redisConnection))
                {
                    IDatabase db = redis.GetDatabase(dbNumber);
                    ret = db.StringSet(key, Newtonsoft.Json.JsonConvert.SerializeObject(value));
                }
            }
            catch (Exception)
            {

                throw;
            }
            return ret;
        }
    }

• 5.调用使用RedisServiceHelp 即可