结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Scripts/Fishing2~/Map/Handler/Map2C_ChangeMapHandler.cs

@@ -0,0 +1,20 @@
+using Fantasy;
+using Fantasy.Async;
+using Fantasy.Network;
+using Fantasy.Network.Interface;
+using NBF.Fishing2;
+using Log = NBC.Log;
+
+namespace NBF.Fishing2
+{
+    public class Map2C_ChangeMapHandler : Message<Map2C_ChangeMap>
+    {
+        protected override async FTask Run(Session session, Map2C_ChangeMap message)
+        {
+            Log.Info($"收到地图切换消息=={message.MapId}");
+            // await MapHelper.ChangeMap(message.MapId);
+            
+            // await MapHelper.CreateRoomTest(message.MapId);
+        }
+    }
+}