批量查询部门

airport-ledger/src/main/java/com/sundot/airport/ledger/service/impl/DeptPortraitServiceImpl.java

@@ -230,12 +230,14 @@ public class DeptPortraitServiceImpl implements IDeptPortraitService {
                 .distinct()
                 .collect(Collectors.toList());
         
-        // 4. 批量查询岗位信息（一次SQL）
+        // 4. 批量查询岗位信息
         Map<Long, String> postIdToNameMap = new HashMap<>();
-        for (Long postId : postIds) {
-            SysPost post = sysPostMapper.selectPostById(postId);
-            if (post != null && post.getPostName() != null) {
-                postIdToNameMap.put(postId, post.getPostName());
+        if (!postIds.isEmpty()) {
+            List<SysPost> posts = sysPostMapper.selectPostsByIds(postIds);
+            for (SysPost post : posts) {
+                if (post != null && post.getPostName() != null) {
+                    postIdToNameMap.put(post.getPostId(), post.getPostName());
+                }
             }
         }
         

airport-system/src/main/java/com/sundot/airport/system/mapper/SysPostMapper.java

@@ -129,4 +129,6 @@ public interface SysPostMapper {
      * @return 选中岗位ID列表
      */
     public List<SysPost> selectPostListsByUserId(Long userId);
+
+    List<SysPost> selectPostsByIds(List<Long> postIds);
 }

airport-system/src/main/resources/mapper/system/SysPostMapper.xml

@@ -188,4 +188,14 @@
         where u.user_id = #{userId}
     </select>
 
+    <select id="selectPostsByIds" parameterType="java.util.List" resultMap="SysPostResult">
+        <include refid="selectPostVo"/>
+        where status='0'
+        and post_id in
+        <foreach item="item" index="index" collection="list"
+                 separator="," close=")" open="(">
+            #{item}
+        </foreach>
+    </select>
+
 </mapper>