From fb203d7eb8bbef8c465e3171b4da2b91e9b98f6e Mon Sep 17 00:00:00 2001
From: Joshi <3040996759@qq.com>
Date: Tue, 27 Jan 2026 10:04:26 +0800
Subject: [PATCH] =?UTF-8?q?feat(dept):=20=E6=B7=BB=E5=8A=A0=E6=A0=B9?=
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- 在 ISysDeptService 中新增 selectChildDeptsById 方法定义
- 在 SysDeptController 中新增 listWithChildren 接口用于查询部门及子部门
- 在 SysDeptServiceImpl 中实现 selectChildDeptsById 方法，使用 ancestors 字段递归查询
- 使用注解权限控制确保接口安全性
- 返回完整的部门树形结构数据
---
 .../klp/web/controller/system/SysDeptController.java | 12 ++++++++++++
 .../java/com/klp/system/service/ISysDeptService.java |  8 ++++++++
 .../klp/system/service/impl/SysDeptServiceImpl.java  | 10 ++++++++++
 3 files changed, 30 insertions(+)

diff --git a/klp-admin/src/main/java/com/klp/web/controller/system/SysDeptController.java b/klp-admin/src/main/java/com/klp/web/controller/system/SysDeptController.java
index 81193513..3375f416 100644
--- a/klp-admin/src/main/java/com/klp/web/controller/system/SysDeptController.java
+++ b/klp-admin/src/main/java/com/klp/web/controller/system/SysDeptController.java
@@ -116,4 +116,16 @@ public class SysDeptController extends BaseController {
         deptService.checkDeptDataScope(deptId);
         return toAjax(deptService.deleteDeptById(deptId));
     }
+
+    /**
+     * 查询部门及其所有子部门
+     *
+     * @param deptId 部门ID
+     */
+    @SaCheckPermission("system:dept:list")
+    @GetMapping("/list/{deptId}")
+    public R<List<SysDept>> listWithChildren(@PathVariable Long deptId) {
+        List<SysDept> depts = deptService.selectChildDeptsById(deptId);
+        return R.ok(depts);
+    }
 }
diff --git a/klp-system/src/main/java/com/klp/system/service/ISysDeptService.java b/klp-system/src/main/java/com/klp/system/service/ISysDeptService.java
index 8c5732cb..5b3cea5a 100644
--- a/klp-system/src/main/java/com/klp/system/service/ISysDeptService.java
+++ b/klp-system/src/main/java/com/klp/system/service/ISysDeptService.java
@@ -113,4 +113,12 @@ public interface ISysDeptService {
      * @return 结果
      */
     int deleteDeptById(Long deptId);
+
+    /**
+     * 根据部门ID查询所有子部门（递归）
+     *
+     * @param deptId 部门ID
+     * @return 所有子部门列表
+     */
+    List<SysDept> selectChildDeptsById(Long deptId);
 }
diff --git a/klp-system/src/main/java/com/klp/system/service/impl/SysDeptServiceImpl.java b/klp-system/src/main/java/com/klp/system/service/impl/SysDeptServiceImpl.java
index 84026b55..d74d682b 100644
--- a/klp-system/src/main/java/com/klp/system/service/impl/SysDeptServiceImpl.java
+++ b/klp-system/src/main/java/com/klp/system/service/impl/SysDeptServiceImpl.java
@@ -270,6 +270,16 @@ public class SysDeptServiceImpl implements ISysDeptService, DeptService {
             .in(SysDept::getDeptId, Arrays.asList(deptIds)));
     }
 
+    @Override
+    public List<SysDept> selectChildDeptsById(Long deptId) {
+        // 创建查询条件，查找祖先列表中包含指定部门ID的所有部门
+        LambdaQueryWrapper<SysDept> lqw = new LambdaQueryWrapper<>();
+        lqw.eq(SysDept::getDelFlag, "0")
+            .apply(DataBaseHelper.findInSet(deptId, "ancestors"));
+        
+        return baseMapper.selectList(lqw);
+    }
+
     /**
      * 修改子元素关系
      *