后台长时任务重写在释放时候停止任务

Falcon.SugarApi/BackTask/BackgroundLongTask.cs

@@ -8,7 +8,7 @@ namespace Falcon.SugarApi.BackTask
     /// <summary>
     /// 长时间执行的后台任务
     /// </summary>
-    public abstract class BackgroundLongTask : BackgroundService
+    public abstract class BackgroundLongTask : BackgroundService, IDisposable
     {
         /// <summary>
         /// 要执行的任务
@@ -70,5 +70,13 @@ namespace Falcon.SugarApi.BackTask
             this.TokenSource.Cancel();
             return base.StopAsync(cancellationToken);
         }
+
+        /// <summary>
+        /// 释放空间，结束任务
+        /// </summary>
+        public override void Dispose() {
+            this.TokenSource.Cancel();
+            base.Dispose();
+        }
     }
 }