update:添加领域事件

Domain/AggregateModel/LinkAggregate/Link.cs

@@ -1,4 +1,5 @@
 using Base62;
+using Domain.Events;
 using Domain.SeedWork;
 using System;
 using System.Collections.Generic;
@@ -40,6 +41,8 @@ namespace Domain.AggregateModel.LinkAggregate
             AppId = appId;
             Time = DateTime.Now;
             CalculateShortCode();
+
+            AddDomainEvent(new LinkCreatedDomainEvent(this));
         }
         /// <summary>
         /// 根据值计算短链字段

QRCodeService/Application/DomainEventHandler/LinkCreated/LogWhenLinkCreatedDomainEventHandler.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Domain.Events;
+using MediatR;
+using Microsoft.Extensions.Logging;
+
+namespace QRCodeService.Application.DomainEventHandler.LinkCreated
+{
+    public class LogWhenLinkCreatedDomainEventHandler : INotificationHandler<LinkCreatedDomainEvent>
+    {
+        readonly ILogger<LogWhenLinkCreatedDomainEventHandler> logger;
+
+        public LogWhenLinkCreatedDomainEventHandler(ILogger<LogWhenLinkCreatedDomainEventHandler> logger)
+        {
+            this.logger = logger;
+        }
+
+        public async Task Handle(LinkCreatedDomainEvent notification, CancellationToken cancellationToken)
+        {
+            logger.LogInformation("domainEvent: link");
+        }
+    }
+}