用户模块和设备模块存在循环引用，把用户模块常用方法抽出一个工具类，以后设备模块等和用户相关的模块，直接引用工具类，避免循环引用

--DeviceServiceImpl.java 修改设备模块获取用户名的方式，使用用户工具类
--SysUserService.java 新建用户工具类，定义了赋值用户名方法
--SysUserServiceImpl.java 实现工具类，重写了赋值用户名的方法

main/manager-api/src/main/java/xiaozhi/modules/device/service/impl/DeviceServiceImpl.java

@@ -22,7 +22,6 @@ import cn.hutool.core.util.RandomUtil;
 import xiaozhi.common.constant.Constant;
 import xiaozhi.common.exception.RenException;
 import xiaozhi.common.page.ExtendPageData;
-import xiaozhi.common.page.PageData;
 import xiaozhi.common.service.impl.BaseServiceImpl;
 import xiaozhi.common.user.UserDetail;
 import xiaozhi.common.utils.ConvertUtils;
@@ -36,14 +35,14 @@ import xiaozhi.modules.device.entity.DeviceEntity;
 import xiaozhi.modules.device.service.DeviceService;
 import xiaozhi.modules.device.vo.UserShowDeviceListVO;
 import xiaozhi.modules.security.user.SecurityUser;
-import xiaozhi.modules.sys.service.SysUserService;
+import xiaozhi.modules.sys.service.SysUserUtilService;
 
 @Service
 public class DeviceServiceImpl extends BaseServiceImpl<DeviceDao, DeviceEntity> implements DeviceService {
 
     private final DeviceDao deviceDao;
 
-    private final SysUserService sysUserService;
+    private final SysUserUtilService sysUserUtilService;
 
     private final String frontedUrl;
 
@@ -51,11 +50,11 @@ public class DeviceServiceImpl extends BaseServiceImpl<DeviceDao, DeviceEntity>
     private final RedisTemplate<String, Object> redisTemplate;
 
     // 添加构造函数来初始化 deviceMapper
-    public DeviceServiceImpl(DeviceDao deviceDao, SysUserService sysUserService,
+    public DeviceServiceImpl(DeviceDao deviceDao, SysUserUtilService sysUserUtilService,
                              @Value("${app.fronted-url:http://localhost:8001}") String frontedUrl,
                              RedisTemplate<String, Object> redisTemplate) {
         this.deviceDao = deviceDao;
-        this.sysUserService = sysUserService;
+        this.sysUserUtilService = sysUserUtilService;
         this.frontedUrl = frontedUrl;
         this.redisTemplate = redisTemplate;
     }
@@ -239,9 +238,8 @@ public class DeviceServiceImpl extends BaseServiceImpl<DeviceDao, DeviceEntity>
             UserShowDeviceListVO vo = ConvertUtils.sourceToTarget(device, UserShowDeviceListVO.class);
             // 把最后修改的时间，改为简短描述的时间
             vo.setRecentChatTime(DateUtils.getShortTime(device.getUpdateDate()));
-            // 获取用户名
-            String username = sysUserService.getByUserId(device.getUserId()).getUsername();
-            vo.setBindUserName(username);
+            sysUserUtilService.assignUsername(device.getUserId(),
+                    vo::setBindUserName);
             vo.setDeviceType(device.getBoard());
             return vo;
         }).toList();

main/manager-api/src/main/java/xiaozhi/modules/sys/service/SysUserUtilService.java

@@ -0,0 +1,19 @@
+package xiaozhi.modules.sys.service;
+
+
+import java.util.function.Consumer;
+
+/**
+ * 定义一个系统用户工具类，避免和用户模块循环依赖
+ * 如用户和设备互相依赖，用户需要获取所有设备，设备又需要获取每个设备的用户名
+ * @author zjy
+ * @since 2025-4-2
+ */
+public interface SysUserUtilService {
+    /**
+     * 赋值用户名
+     * @param userId 用户id
+     * @param setter 赋值方法
+     */
+    void assignUsername( Long userId, Consumer<String> setter);
+}

main/manager-api/src/main/java/xiaozhi/modules/sys/service/impl/SysUserUtilServiceImpl.java

@@ -0,0 +1,26 @@
+package xiaozhi.modules.sys.service.impl;
+
+import lombok.AllArgsConstructor;
+import org.springframework.stereotype.Service;
+import xiaozhi.common.redis.RedisUtils;
+import xiaozhi.common.service.impl.BaseServiceImpl;
+import xiaozhi.modules.sys.dao.SysUserDao;
+import xiaozhi.modules.sys.entity.SysUserEntity;
+import xiaozhi.modules.sys.service.SysUserUtilService;
+
+import java.util.function.Consumer;
+
+@Service
+@AllArgsConstructor
+public class SysUserUtilServiceImpl extends BaseServiceImpl<SysUserDao, SysUserEntity> implements SysUserUtilService {
+
+    private RedisUtils redisUtils;
+
+    @Override
+    public void assignUsername(Long userId, Consumer<String> setter) {
+        SysUserEntity entity = baseDao.selectById(userId);
+        if (entity != null) {
+            setter.accept(entity.getUsername());
+        }
+    }
+}