findDeptIdByUserName

src/main/java/com/ruoyi/system/mapper/SysDeptMapper.java

@@ -233,4 +233,8 @@ public interface SysDeptMapper {
      */
     Integer thisDeptIdIsParentIdChild(@Param("deptId") Long deptId, @Param("parentId") Long parentId);
 
+    /**
+     * 根据用户名查询dept_id, parent_id, ancestors, dept_name
+     */
+    SysDept findDeptIdByUserName(@Param("userName") String userName);
 }

src/main/resources/mapper/system/SysDeptMapper.xml

@@ -621,4 +621,21 @@
             #{item}
         </foreach>
     </select>
+    <select id="findDeptIdByUserName" parameterType="SysDept" resultMap="SysDeptResult">
+        SELECT
+            dept.dept_id,
+            dept.parent_id,
+            dept.ancestors,
+            dept.dept_name,
+            su.user_name
+        FROM
+            sys_user su
+                LEFT JOIN sys_user_dept ud ON ud.user_id = su.user_id
+                LEFT JOIN sys_dept dept ON ud.dept_id = dept.dept_id
+        WHERE
+            su.del_flag = 0
+          AND dept.del_flag = 0
+          AND su.user_name = #{userName}
+            LIMIT 1
+    </select>
 </mapper>