.Net Core Redis的使用

1、项目从Nuget中添加引用 Microsoft.Extensions.Caching.Redis

2、创建RedisCacheHelper.cs 帮助类，代码如下

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Extensions.Caching.Redis;
using Microsoft.Extensions.Caching.Distributed;

namespace Rextec.SOA.Infrastructure
{
public class RedisCacheHelper
{
private static RedisCache _redisCache = null;
private static RedisCacheOptions options = null;
/// <summary>
///
/// </summary>
/// <param name="connectionString"></param>
/// <param name="instanceName"></param>
public RedisCacheHelper(string connectionString, string instanceName)
{
options = new RedisCacheOptions();
options.Configuration = connectionString;
options.InstanceName = instanceName;
_redisCache = new RedisCache(options);
}
/// <summary>
/// 初始化Redis
/// </summary>
public static void InitRedis(string connectionString,string instanceName)
{
options = new RedisCacheOptions();
options.Configuration = connectionString;
options.InstanceName = instanceName;
_redisCache = new RedisCache(options);
}
/// <summary>
/// 添加string数据
/// </summary>
/// <param name="key">键</param>
/// <param name="value">值</param>
/// <param name="ExprireTime">过期时间 单位小时</param>
/// <returns></returns>
public static bool SetStringValue(string key,string value, int ExprireTime = 24)
{
if (string.IsNullOrEmpty(key))
{
return false;
}
try
{
_redisCache.SetString(key, value, new DistributedCacheEntryOptions()
{
AbsoluteExpiration = DateTime.Now.AddHours(ExprireTime)
});
return true;
}
catch(Exception ex)
{
return false;
}
}
/// <summary>
/// 获取string数据
/// </summary>
/// <param name="key">键</param>
/// <returns></returns>
public static string GetStringValue(string key)
{
if (string.IsNullOrEmpty(key))
{
return null;
}
try
{
return _redisCache.GetString(key);
}
catch(Exception ex)
{
return null;
}
}
/// <summary>
/// 获取数据（对象）
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
/// <param name="key">键</param>
/// <returns></returns>
public static T Get<T>(string key)
{
string value = GetStringValue(key);
if (string.IsNullOrEmpty(value))
{
return default(T);
}
try
{
var obj = Json.ToObject<T>(value);
return obj;
}
catch (Exception ex)
{
return default(T);
}
}
/// <summary>
/// 移除数据
/// </summary>
/// <param name="key">键</param>
public static bool Remove(string key)
{
if (string.IsNullOrEmpty(key))
{
return false;
}
try
{
_redisCache.Remove(key);
return true;
}
catch(Exception ex)
{
return false;
}
}
/// <summary>
/// 刷新数据
/// </summary>
/// <param name="key">键</param>
public static bool Refresh(string key)
{
if (string.IsNullOrEmpty(key))
{
return false;
}
try
{
_redisCache.Refresh(key);
return true;
}
catch(Exception ex)
{
return false;
}
}
/// <summary>
/// 重置数据
/// </summary>
/// <param name="key">键</param>
/// <param name="value">值</param>
/// <param name="expireTime">过期时间 单位小时</param>
public static bool Replace(string key, string value, int expireTime = 24)
{
if (Remove(key))
{
return SetStringValue(key, value, expireTime);
}
else
{
return false;
}
}
}
}
3、appsettings.json中配置redis数据连接

"RedisConnectionStrings": { //redis连接
"Connection": "127.0.0.1:6379,abortConnect=false",
"InstanceName": "RextecSOARedis"
}
4、startup中redis连接设置

//获取redis数据连接
var redisConnectionString= ((ConfigurationSection)Configuration.GetSection("RedisConnectionStrings:Connection")).Value;
var redisInstanceName = ((ConfigurationSection)Configuration.GetSection("RedisConnectionStrings:InstanceName")).Value;
services.AddSingleton(new RedisCacheHelper(redisConnectionString,redisInstanceName));
5、调用示例

RedisCacheHelper.SetStringValue("testvalue", "redis");//添加数据
RedisCacheHelper.GetStringValue("testvalue");//获取数据
 
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原文链接：https://blog.csdn.net/liwan09/article/details/102721387