更新了事件API和添加了事件扩展方法 #17

新增了一个`EventExtensions.cs`文件，定义了一个`EventExtensions`静态类，该类中定义了一个`PublishAsync`扩展方法，该方法允许`IEvent`类型的对象直接调用`PublishAsync`方法进行事件发布。

相关工作项: #1

Biwen.QuickApi.DemoWeb/Apis/EventApi.cs

@@ -3,14 +3,14 @@
 
 namespace Biwen.QuickApi.DemoWeb.Apis
 {
-    public class MyEvent : BaseRequest<MyEvent>,IEvent
+    public class MyEvent : BaseRequest<MyEvent>, IEvent
     {
         [FromQuery]
         public string? Message { get; set; }
     }
 
 
-    public class MyEvent2: IEvent
+    public class MyEvent2 : IEvent
     {
         public string? Message { get; set; }
     }
@@ -57,7 +57,7 @@ public override Task HandleAsync(MyEvent @event, CancellationToken ct)
     /// <summary>
     /// 抛出异常的Handler
     /// </summary>
-    [EventSubscriber(Order =-2,ThrowIfError =false)]
+    [EventSubscriber(Order = -2, ThrowIfError = false)]
     public class MyEventHandler3 : EventSubscriber<MyEvent>
     {
         private readonly ILogger<MyEventHandler3> _logger;
@@ -75,7 +75,7 @@ public override Task HandleAsync(MyEvent @event, CancellationToken ct)
     /// <summary>
     /// 同时订阅多个事件
     /// </summary>
-    [EventSubscriber(IsAsync = true,Order =0, ThrowIfError =false)]
+    [EventSubscriber(IsAsync = true, Order = 0, ThrowIfError = false)]
     public class MyEventHandler4 : IEventSubscriber<MyEvent>, IEventSubscriber<MyEvent2>
     {
         private readonly ILogger<MyEventHandler4> _logger;
@@ -101,14 +101,17 @@ public Task HandleAsync(MyEvent2 @event, CancellationToken ct)
     [QuickApi("event")]
     public class EventApi : BaseQuickApi<MyEvent>
     {
+
         public override async ValueTask<IResultResponse> ExecuteAsync(MyEvent request)
         {
             //publish
             await PublishAsync(request);
-
             //publish event2
             await PublishAsync(new MyEvent2 { Message = "hello event2" });
 
+            //可以使用IEvent扩展方法
+            await new MyEvent { Message = "1234567890" }.PublishAsync();
+
             return IResultResponse.Content("send event");
         }
     }

Biwen.QuickApi/BaseQuickApi.cs

@@ -27,6 +27,7 @@ public abstract class BaseQuickApi<Req, Rsp> : IQuickApi<Req, Rsp> where Req : B
 
         public virtual async Task PublishAsync<T>(T @event, CancellationToken cancellationToken = default) where T : IEvent
         {
+            if (ServiceRegistration.ServiceProvider is null) throw new InvalidOperationException("mush UseBiwenQuickApis() first!");
             using var scope = ServiceRegistration.ServiceProvider.CreateScope();
             var publisher = scope.ServiceProvider.GetRequiredService<Publisher>();
             await publisher.PublishAsync(@event, cancellationToken);

Biwen.QuickApi/Events/EventExtensions.cs

@@ -0,0 +1,20 @@
+namespace Biwen.QuickApi.Events
+{
+    public static class EventExtensions
+    {
+        /// <summary>
+        /// 事件广播扩展
+        /// </summary>
+        /// <param name="event"></param>
+        /// <param name="cancellationToken"></param>
+        /// <returns></returns>
+        /// <exception cref="InvalidOperationException"></exception>
+        public static async Task PublishAsync<T>(this T @event, CancellationToken cancellationToken = default) where T : IEvent
+        {
+            if (ServiceRegistration.ServiceProvider is null) throw new InvalidOperationException("mush UseBiwenQuickApis() first!");
+            using var scope = ServiceRegistration.ServiceProvider.CreateScope();
+            var publisher = scope.ServiceProvider.GetRequiredService<Publisher>();
+            await publisher.PublishAsync(@event, cancellationToken);
+        }
+    }
+}