update 更新通过岗位ID查询用户

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/service/UserService.java

@@ -85,6 +85,14 @@ public interface UserService {
      */
     List<UserDTO> selectUsersByDeptIds(List<Long> deptIds);
 
+    /**
+     * 通过岗位ID查询用户
+     *
+     * @param postIds 岗位ids
+     * @return 用户
+     */
+    List<UserDTO> selectUsersByPostIds(List<Long> postIds);
+
     /**
      * 查询用户并返回任务指派的列表，支持分页
      *

ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysUserServiceImpl.java

@@ -696,6 +696,28 @@ public class SysUserServiceImpl implements ISysUserService, UserService {
         return BeanUtil.copyToList(list, UserDTO.class);
     }
 
+    /**
+     * 通过岗位ID查询用户
+     *
+     * @param postIds 岗位ids
+     * @return 用户
+     */
+    @Override
+    public List<UserDTO> selectUsersByPostIds(List<Long> postIds) {
+        if (CollUtil.isEmpty(postIds)) {
+            return List.of();
+        }
+
+        // 通过岗位ID获取用户岗位信息
+        List<SysUserPost> userPosts = userPostMapper.selectList(
+            new LambdaQueryWrapper<SysUserPost>().in(SysUserPost::getPostId, postIds));
+
+        // 获取用户ID列表
+        Set<Long> userIds = StreamUtils.toSet(userPosts, SysUserPost::getUserId);
+
+        return selectListByIds(new ArrayList<>(userIds));
+    }
+
     /**
      * 查询用户并返回任务指派的列表，支持分页
      *

ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/WfTaskAssigneeServiceImpl.java

@@ -152,7 +152,7 @@ public class WfTaskAssigneeServiceImpl implements IWfTaskAssigneeService, Handle
             case USER -> userService.selectListByIds(ids);
             case ROLE -> userService.selectUsersByRoleIds(ids);
             case DEPT -> userService.selectUsersByDeptIds(ids);
-            // todo 岗位后续待添加
+            case POST -> userService.selectUsersByPostIds(ids);
             default -> Collections.emptyList();
         };
     }