update README

OpenAuth.WebApi/Areas/SSO/Models/Services/AppInfoService.cs

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+using System;
+
+namespace OpenAuth.WebApi.Areas.SSO.Models.Services
+{
+    public class AppInfoService : ServiceContext
+    {
+        public AppInfo Get(string appKey)
+        {
+            //可以从数据库读取
+            return new AppInfo
+            {
+                AppKey = "670b14728ad9902aecba32e22fa4f6bd",
+                AppSecret = "670b14728ad9902aecba32e22fa4f6bd",
+                Icon = "/Content/img/default-app.png",
+                IsEnable = true,
+                Remark = "OpenAuth.net",
+                ReturnUrl = "http://localhost:53050",
+                Title = "OpenAuth.Net",
+                CreateTime = DateTime.Now,
+            };
+        }
+    }
+}

OpenAuth.WebApi/Areas/SSO/Models/Services/AppUserService.cs

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+namespace OpenAuth.WebApi.Areas.SSO.Models.Services
+{
+    public class AppUserService : ServiceContext
+    {
+        public AppUser Get(string username = "")
+        {
+            //模拟用户
+            return new AppUser
+            {
+                Nick = "超级管理员",
+                UserName = username,
+                UserPwd = "xxxxxxxxx"
+            };
+        }
+    }
+}

OpenAuth.WebApi/Areas/SSO/Models/Services/UserAuthSessionService.cs

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+using System;
+using Infrastructure.Cache;
+
+namespace OpenAuth.WebApi.Areas.SSO.Models.Services
+{
+    public class UserAuthSessionService : ServiceContext
+    {
+        public UserAuthSessionService()
+        {
+            SetCacheInstance(new SessionContext());
+        }
+
+        public bool Create(UserAuthSession model)
+        {
+            //设置缓存
+            return CacheContext.Set(model.Token, model);
+        }
+
+        public UserAuthSession Get(string token)
+        {
+            var sessionCacheItem = CacheContext.Get<UserAuthSession>(token);
+            return sessionCacheItem;
+        }
+
+        public bool GetCache(string token)
+        {
+            var cache = Get(token);
+            if (cache == null) return false;
+
+            if (cache.InvalidTime > DateTime.Now)
+            {
+                //延长
+                cache.InvalidTime = DateTime.Now.AddMinutes(5);
+                //设置缓存
+                CacheContext.Set(cache.Token, cache);
+
+                return true;
+            }
+
+            //移除无效Session缓存
+            Remove(token);
+
+            return false;
+        }
+
+        public void Remove(string token)
+        {
+            CacheContext.Remove(token);
+        }
+    }
+}