增加后台长期任务OnException处理异常

Falcon.SugarApi/BackTask/BackgroundLongTask.cs

@@ -30,6 +30,10 @@ namespace Falcon.SugarApi.BackTask
         /// 完成一次执行
         /// </summary>
         protected virtual void OnCompleted(BackgroundLongTask t) { }
+        /// <summary>
+        /// 执行中发生未处理异常
+        /// </summary>
+        protected virtual void OnException(BackgroundLongTask t, Exception ex) { }
 
         /// <summary>
         /// 用于定期执行任务的委托
@@ -46,8 +50,15 @@ namespace Falcon.SugarApi.BackTask
                 OnStart(this);
                 while (!TokenSource.Token.IsCancellationRequested) {
                     await Task.Delay(TimeSpan.FromSeconds(RunTimespan))
-                    .ContinueWith(_ => { RunAsync().Wait(); })
-                    .ContinueWith(_ => OnCompleted(this));
+                    .ContinueWith(async _ => {
+                        try {
+                            await RunAsync();
+                        }
+                        catch (Exception ex) {
+                            OnException(this, ex);
+                        }
+                    })
+                    .ContinueWith(t => { OnCompleted(this); });
                 }
                 OnStop(this);
             };