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Service/Application.Web/Plug/ChatHub/ChatHub.cs

@@ -0,0 +1,26 @@
+using Microsoft.AspNetCore.SignalR;
+namespace Application.Web
+{
+    public class ChatHub:Hub
+    {
+        // 客户端调用：发送消息给所有人
+        public async Task SendMessage(string user, string message)
+        {
+            // 推送给所有客户端（Clients.All）
+            await Clients.All.SendAsync("ReceiveMessage", user, message);
+        }
+
+        // 可选：连接/断开事件
+        public override async Task OnConnectedAsync()
+        {
+            await Clients.All.SendAsync("UserConnected", Context.ConnectionId);
+            await base.OnConnectedAsync();
+        }
+
+        public override async Task OnDisconnectedAsync(Exception? exception)
+        {
+            await Clients.All.SendAsync("UserDisconnected", Context.ConnectionId);
+            await base.OnDisconnectedAsync(exception);
+        }
+    }
+}