update

mec-biz/src/main/java/com/ym/mec/biz/service/impl/TeacherServiceImpl.java

@@ -158,7 +158,7 @@ public class TeacherServiceImpl extends BaseServiceImpl<Integer, Teacher>  imple
 			//获取班级老师总数map
 			Map<Integer, Integer> numsMap = JSONObject.parseObject(JSONObject.toJSONString(MapUtil.convertIntegerMap(classGroupDao.countTeacherNums(StringUtils.join(classGroupIds, ",")))),HashMap.class);
 			imGroupModels.forEach(e -> {
-				Integer num = numsMap.get(e.getId());
+				Integer num = numsMap.get(Integer.parseInt(e.getId()));
 				e.setCount((num == null ? 0 : num) + e.getCount());
 			});
 		}

mec-biz/src/main/resources/config/mybatis/DemoGroupMapper.xml

@@ -240,7 +240,7 @@
         SELECT
         cs.class_date_ classDate,
         GROUP_CONCAT(DISTINCT CONCAT(cs.start_class_time_,' ',cs.end_class_time_)) startTimes,
-        GROUP_CONCAT(s.name_) subjectNames
+        GROUP_CONCAT(DISTINCT s.name_) subjectNames
         FROM
         demo_group dg
         LEFT JOIN demo_group_class_group_mapper dgcgm ON dg.id_=dgcgm.demo_group_id_