src/main/java/com/whyc/service/AreaUserService.java
@@ -82,4 +82,14 @@ mapper.insertBatchSomeColumn(areaUserList); } } //通过区域id查询所有的用户 public List selectUidByAreaId(List areaList) { QueryWrapper uinfWrapper=new QueryWrapper(); uinfWrapper.select("distinct uid"); uinfWrapper.in("area_id",areaList); List<AreaUser> list=mapper.selectList(uinfWrapper); List uList=list.stream().map(AreaUser::getUid) // 提取用户名 .collect(Collectors.toList()); // 转换为列表*/ return uList; } }