feat: 完成多message存储

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain.Shared/Dtos/OpenAi/ThorChatMessage.cs

@@ -90,6 +90,28 @@ public class ThorChatMessage
         }
     }
 
+    
+    /// <summary>
+    /// 用于数据存储
+    /// </summary>
+    [JsonIgnore] 
+    public string MessagesStore
+    {
+        get
+        {
+            if (Content is not null)
+            {
+                return Content;
+            }
+
+            if (Contents is not null && Contents.Any())
+            {
+                return JsonSerializer.Serialize(Contents);
+            }
+            return string.Empty;
+        }
+    }
+    
     /// <summary>
     /// 【可选】参与者的可选名称。提供模型信息以区分相同角色的参与者。
     /// </summary>

Yi.Abp.Net8/module/ai-hub/Yi.Framework.AiHub.Domain/Managers/AiGateWayManager.cs

@@ -275,7 +275,7 @@ public class AiGateWayManager : DomainService
         await _aiMessageManager.CreateUserMessageAsync(userId, sessionId,
             new MessageInputDto
             {
-                Content = sessionId is null ? "不予存储" : request.Messages?.LastOrDefault()?.Content ?? string.Empty,
+                Content = sessionId is null ? "不予存储" : request.Messages?.LastOrDefault()?.MessagesStore ?? string.Empty,
                 ModelId = request.Model,
                 TokenUsage = tokenUsage,
             }, tokenId);