first commit

DOAN.ServiceCore/Services/SysConfigService.cs

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+using Infrastructure.Attribute;
+using DOAN.Model.System;
+
+namespace DOAN.ServiceCore.Services
+{
+    /// <summary>
+    /// 参数配置Service业务层处理
+    /// </summary>
+    [AppService(ServiceType = typeof(ISysConfigService), ServiceLifetime = LifeTime.Transient)]
+    public class SysConfigService : BaseService<SysConfig>, ISysConfigService
+    {
+        #region 业务逻辑代码
+
+        public SysConfig GetSysConfigByKey(string key)
+        {
+            return Queryable().First(f => f.ConfigKey == key);
+        }
+
+        #endregion
+    }
+}