mybatis 一对多 分步查询提交

mybatis_train/src/main/java/com/mapper/AccountMapper.java

@@ -13,7 +13,7 @@ public interface AccountMapper {
     List<AccountEntity> findAll(Integer id);
     void updateOne(AccountEntity accountEntity);
     void insertOne(AccountEntity accountEntity);
-    AccountRealEntity findByDepId(Integer depId);
+    List<AccountRealEntity> findByDepId(Integer depId);
     // 多对一查询
     AccountVO findVO(Integer id);
     AccountVO findByStep(Integer id);

mybatis_train/src/main/resources/com/mapper/DepartmentMapper.xml

@@ -18,6 +18,7 @@
         <result property="depName" column="dep_name"></result>
         <collection property="accountEntities"
                     select="com.mapper.AccountMapper.findByDepId"
+                    fetchType="lazy"
                     column="dep_id">
         </collection>
     </resultMap>