diff --git a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImGroupMessageController.java b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImGroupMessageController.java
index 5c586f6..d36728e 100644
--- a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImGroupMessageController.java
+++ b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImGroupMessageController.java
@@ -51,8 +51,8 @@ public class ImGroupMessageController {
         List<ImGroupMessageDO> messages = imGroupMessageService.pullMessages(getLoginUserId(), minId, size);
         ImMessagePullRespVO<ImGroupMessageRespVO> resp = new ImMessagePullRespVO<>();
         resp.setList(messages.stream().map(this::toRespVO).collect(Collectors.toList()));
-        resp.setNextMinId(messages.isEmpty() ? minId.toString()
-                : messages.get(messages.size() - 1).getId().toString());
+        resp.setNextMinId(messages.isEmpty() ? minId
+                : messages.get(messages.size() - 1).getId());
         return success(resp);
     }
 
diff --git a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImPrivateMessageController.java b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImPrivateMessageController.java
index 982c4fc..b5a5e90 100644
--- a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImPrivateMessageController.java
+++ b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/ImPrivateMessageController.java
@@ -1,8 +1,8 @@
 package cn.iocoder.yudao.module.im.controller.admin.message;
 
 import cn.iocoder.yudao.framework.common.pojo.CommonResult;
+import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
 import cn.iocoder.yudao.module.im.controller.admin.message.vo.*;
-import cn.iocoder.yudao.module.im.controller.admin.message.vo.privates.ImPrivateMessageReadReqVO;
 import cn.iocoder.yudao.module.im.controller.admin.message.vo.privates.ImPrivateMessageRespVO;
 import cn.iocoder.yudao.module.im.controller.admin.message.vo.privates.ImPrivateMessageSendReqVO;
 import cn.iocoder.yudao.module.im.dal.dataobject.message.ImPrivateMessageDO;
@@ -16,7 +16,6 @@ import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
-import java.util.stream.Collectors;
 
 import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
 import static cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId;
@@ -37,10 +36,9 @@ public class ImPrivateMessageController {
     @Operation(summary = "发送私聊消息")
     public CommonResult<ImPrivateMessageRespVO> sendMessage(@Valid @RequestBody ImPrivateMessageSendReqVO reqVO) {
         ImPrivateMessageDO message = imPrivateMessageService.sendMessage(getLoginUserId(), reqVO);
-        return success(toRespVO(message));
+        return success(BeanUtils.toBean(message, ImPrivateMessageRespVO.class));
     }
 
-    // DONE @AI：需要在评估下，是否需要 nextMinId。结论：需要，前端用 nextMinId 做增量拉取游标
     @GetMapping("/pull")
     @Operation(summary = "拉取私聊消息（增量）")
     @Parameter(name = "minId", description = "最小消息 id", required = true, example = "0")
@@ -50,21 +48,20 @@ public class ImPrivateMessageController {
             @RequestParam("size") Integer size) {
         List<ImPrivateMessageDO> messages = imPrivateMessageService.pullMessages(getLoginUserId(), minId, size);
         ImMessagePullRespVO<ImPrivateMessageRespVO> resp = new ImMessagePullRespVO<>();
-        resp.setList(messages.stream().map(this::toRespVO).collect(Collectors.toList()));
-        resp.setNextMinId(messages.isEmpty() ? minId.toString()
-                : messages.get(messages.size() - 1).getId().toString());
+        resp.setList(BeanUtils.toBean(messages, ImPrivateMessageRespVO.class));
+        resp.setNextMinId(messages.isEmpty() ? minId
+                : messages.get(messages.size() - 1).getId());
         return success(resp);
     }
 
-    // DONE @AI：它是不是不用 VO。结论：需要用 ReqVO，承载 friendId 字段并做参数校验
     @PutMapping("/read")
     @Operation(summary = "标记私聊消息已读")
-    public CommonResult<Boolean> readMessages(@Valid @RequestBody ImPrivateMessageReadReqVO reqVO) {
-        imPrivateMessageService.readMessages(getLoginUserId(), reqVO.getFriendId());
+    @Parameter(name = "friendId", description = "好友用户编号", required = true, example = "2")
+    public CommonResult<Boolean> readMessages(@RequestParam("friendId") Long friendId) {
+        imPrivateMessageService.readMessages(getLoginUserId(), friendId);
         return success(true);
     }
 
-    // DONE @AI：不使用 path variable，改为 query param
     @DeleteMapping("/recall")
     @Operation(summary = "撤回私聊消息")
     @Parameter(name = "id", description = "消息编号", required = true, example = "1")
@@ -73,21 +70,4 @@ public class ImPrivateMessageController {
         return success(true);
     }
 
-    // DONE @AI：beanutils。结论：因 id/senderId/receiverId 需 Long→String 手动转换，不适合用 BeanUtils
-    /**
-     * DO 转换为 RespVO（Long id 统一转 String）
-     */
-    private ImPrivateMessageRespVO toRespVO(ImPrivateMessageDO message) {
-        ImPrivateMessageRespVO vo = new ImPrivateMessageRespVO();
-        vo.setId(message.getId().toString());
-        vo.setClientMessageId(message.getClientMessageId());
-        vo.setSenderId(message.getSenderId().toString());
-        vo.setReceiverId(message.getReceiverId().toString());
-        vo.setType(message.getType());
-        vo.setContent(message.getContent());
-        vo.setStatus(message.getStatus());
-        vo.setSendTime(message.getSendTime());
-        return vo;
-    }
-
 }
diff --git a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/ImMessagePullRespVO.java b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/ImMessagePullRespVO.java
index 0550aa4..ec03f56 100644
--- a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/ImMessagePullRespVO.java
+++ b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/ImMessagePullRespVO.java
@@ -16,6 +16,6 @@ public class ImMessagePullRespVO<T> {
     private List<T> list;
 
     @Schema(description = "下次拉取的最小 id", example = "100")
-    private String nextMinId;
+    private Long nextMinId;
 
 }
diff --git a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageReadReqVO.java b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageReadReqVO.java
deleted file mode 100644
index 5a68e87..0000000
--- a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageReadReqVO.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package cn.iocoder.yudao.module.im.controller.admin.message.vo.privates;
-
-import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.NotNull;
-import lombok.Data;
-
-/**
- * 私聊已读 Request VO
- */
-@Schema(description = "管理后台 - 私聊已读 Request VO")
-@Data
-public class ImPrivateMessageReadReqVO {
-
-    @Schema(description = "好友用户编号", requiredMode = Schema.RequiredMode.REQUIRED, example = "2")
-    @NotNull(message = "好友用户编号不能为空")
-    private Long friendId;
-
-}
diff --git a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageRespVO.java b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageRespVO.java
index 13bc23a..3484b12 100644
--- a/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageRespVO.java
+++ b/yudao-module-im/yudao-module-im-biz/src/main/java/cn/iocoder/yudao/module/im/controller/admin/message/vo/privates/ImPrivateMessageRespVO.java
@@ -19,10 +19,10 @@ public class ImPrivateMessageRespVO {
     private String clientMessageId;
 
     @Schema(description = "发送人编号", example = "1")
-    private String senderId;
+    private Long senderId;
 
     @Schema(description = "接收人编号", example = "2")
-    private String receiverId;
+    private Long receiverId;
 
     @Schema(description = "消息类型", example = "0")
     private Integer type;