前端：

1、会话列表、消息界面展示与后端打通
后端：
1、修复会话和消息服务现存问题
2、会话对象不再返回Message对象，而是使用MessageBaseDto替代
3、修改查询会话列表和会话信息的逻辑
4、新增消息列表查询
文档：
后端代码规范文档新增从数据库同步到模型的命令

backend/IM_API/Controllers/ConversationController.cs

@@ -28,6 +28,14 @@ namespace IM_API.Controllers
             var res = new BaseResponse<List<ConversationDto>>(list);
             return Ok(res);
         }
+        [HttpGet]
+        public async Task<IActionResult> Get([FromQuery]int conversationId)
+        {
+            var userIdStr = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            var conversation = await _conversationSerivice.GetConversationByIdAsync(int.Parse(userIdStr), conversationId);
+            var res = new BaseResponse<ConversationDto>(conversation);
+            return Ok(res);
+        }
         [HttpPost]
         public async Task<IActionResult> Clear()
         {

backend/IM_API/Controllers/MessageController.cs

@@ -3,6 +3,7 @@ using IM_API.Interface.Services;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
 using System.Security.Claims;
 
 namespace IM_API.Controllers
@@ -33,5 +34,13 @@ namespace IM_API.Controllers
             await _messageService.SendGroupMessageAsync(int.Parse(userIdstr), dto.ReceiverId, dto);
             return Ok(new BaseResponse<object?>());
         }
+        [HttpGet]
+        public async Task<IActionResult> GetMessageList([Required]int conversationId, int? msgId, int? pageSize)
+        {
+            var userIdStr = User.FindFirstValue(ClaimTypes.NameIdentifier);
+            var msgList = await _messageService.GetMessagesAsync(int.Parse(userIdStr), conversationId, msgId, pageSize, false);
+            var res = new BaseResponse<List<MessageBaseDto>>(msgList);
+            return Ok(res);
+        }
     }
 }