转移.net core 3.1，为.NET 5做准备

Infrastructure/Cache/CacheContext.cs

@@ -10,17 +10,22 @@
 // ***********************************************************************
 
 using System;
-using System.Web;
+using Microsoft.Extensions.Caching.Memory;
 
 namespace Infrastructure.Cache
 {
     public class CacheContext : ICacheContext
     {
-        private readonly System.Web.Caching.Cache _objCache = HttpRuntime.Cache;
+        private IMemoryCache _objCache;
+
+        public CacheContext(IMemoryCache objCache)
+        {
+            _objCache = objCache;
+        }
+
         public override T Get<T>(string key)
         {
-            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
-            return (T) objCache[key];
+            return  _objCache.Get<T>(key);
         }
 
         public override bool Set<T>(string key, T t, DateTime expire)
@@ -30,8 +35,10 @@ namespace Infrastructure.Cache
             {
                 Remove(key);
             }
-                
-            _objCache.Insert(key, t, null, expire, System.Web.Caching.Cache.NoSlidingExpiration);
+
+            _objCache.Set(key, t, new MemoryCacheEntryOptions()
+                .SetAbsoluteExpiration(expire));   //绝对过期时间
+
             return true;
         }
 

Infrastructure/Cache/CacheProvider.cs

@@ -1,67 +0,0 @@
-using System;
-using System.Globalization;
-
-namespace Infrastructure.Cache
-{
-    /// <summary>
-    /// 缓存工厂
-    /// <para>李玉宝新增于2016-11-09 9:42:52</para>
-    /// </summary>
-    public abstract class CacheProvider : IDisposable
-    {
-        /// <summary>
-        /// 缓存组件
-        /// </summary>
-        public ICacheContext CacheContext { get; private set; }
-
-        /// <summary>
-        /// 动态设置缓存对象的新实例
-        /// </summary>
-        /// <param name="cacheContext">缓存实例对象</param>
-        public void SetCacheInstance(ICacheContext cacheContext)
-        {
-            //先释放现有的缓存组件
-            if (CacheContext != null)
-            {
-                CacheContext = null;
-            }
-
-            //初始化缓存组件新的实例
-            CacheContext = cacheContext;
-        }
-
-        public void SetCacheInstance(Type cacheContextType)
-        {
-            if (cacheContextType == null)
-            {
-                throw new ArgumentNullException("cacheContextType");
-            }
-
-            if (!typeof(ICacheContext).IsAssignableFrom(cacheContextType))
-            {
-                throw new ArgumentException(
-                    string.Format(CultureInfo.CurrentCulture, "该类型 {0} 必须继承自抽象类CacheContext", cacheContextType),
-                    "cacheContextType");
-            }
-
-            try
-            {
-                CacheContext = Activator.CreateInstance(cacheContextType) as ICacheContext;
-            }
-            catch (Exception ex)
-            {
-                throw new InvalidOperationException(
-                        String.Format(
-                            CultureInfo.CurrentCulture,
-                            "创建抽象类 CacheContext 的实例 {0} 失败",
-                            cacheContextType),
-                        ex);
-            }
-        }
-
-        public void Dispose()
-        {
-
-        }
-    }
-}

Infrastructure/Cache/EnyimMemcachedContext.cs

@@ -5,11 +5,13 @@
 //
 // Last Modified By : yubaolee
 // Last Modified On : 06-21-2016
-// Contact : 
+// Contact : Add services.AddEnyimMemcached(...)
+//                  and app.UseEnyimMemcached() in Startup. 
 // File: EnyimMemcachedContext.cs
 // ***********************************************************************
 
 
+
 using System;
 using Enyim.Caching;
 using Enyim.Caching.Memcached;
@@ -18,7 +20,12 @@ namespace Infrastructure.Cache
 {
     public sealed class EnyimMemcachedContext : ICacheContext
     {
-        private static readonly MemcachedClient _memcachedClient  = new MemcachedClient();
+        private  IMemcachedClient _memcachedClient;
+
+        public EnyimMemcachedContext(IMemcachedClient client)
+        {
+            _memcachedClient = client;
+        }
 
         public override T Get<T>(string key)
         {

Infrastructure/Cache/ObjCacheProvider.cs

@@ -1,49 +0,0 @@
-// ***********************************************************************
-// Assembly         : Helper
-// Author           : Administrator
-// Created          : 12-21-2016
-//
-// Last Modified By : Administrator
-// Last Modified On : 12-22-2016
-// Contact : 
-// File: ObjCacheProvider.cs
-// ***********************************************************************
-
-
-using System;
-
-namespace Infrastructure.Cache
-{
-    /// <summary>
-    ///  缓存工厂实现
-    /// 这样做是方便换其他的缓存时（如memcachedContext）只换这一个地方即可
-    /// </summary>
-    public class ObjCacheProvider<T> : CacheProvider
-    {
-        public ObjCacheProvider()
-        {
-            SetCacheInstance(new CacheContext());
-        }
-
-        public bool Create(string key, T val, DateTime expire)
-        {
-            //设置缓存
-            return CacheContext.Set<T>(key, val, expire);
-        }
-
-        /// <summary>
-        /// 根据失效时间获取缓存
-        /// <para>李玉宝于2016-11-08 16:54:04</para>
-        /// </summary>
-        /// <param name="key">The key.</param>
-        public T GetCache(string key)
-        {
-            return CacheContext.Get<T>(key);
-        }
-
-        public void Remove(string key)
-        {
-            CacheContext.Remove(key);
-        }
-    }
-}