代码修改

cooleshow-user/user-biz/src/main/java/com/yonge/cooleshow/biz/dal/service/impl/TeacherServiceImpl.java

@@ -175,7 +175,8 @@ public class TeacherServiceImpl extends ServiceImpl<TeacherDao, Teacher> impleme
 
     @Override
     public List<Subject> querySubject(Long userId) {
-        return baseMapper.querySubject(userId);
+        List<Subject> subjects = baseMapper.querySubject(userId);
+        return subjects;
     }
 
     private HttpResponseResult<Boolean> doCreate(TeacherSubmitReq teacherSubmitReq) throws BizException {

cooleshow-user/user-biz/src/main/resources/config/mybatis/TeacherMapper.xml

@@ -130,8 +130,8 @@
     </select>
 
     <select id="querySubject" resultMap="com.yonge.cooleshow.biz.dal.dao.SubjectDao.Subject">
-        SELECT s.* FROM teacher t
-        LEFT JOIN `subject` s ON FIND_IN_SET(s.id_,t.subject_id_)
+        SELECT s.* FROM `subject` s
+        LEFT JOIN teacher t ON FIND_IN_SET(s.id_,t.subject_id_)
         WHERE t.user_id_ = #{userId}
     </select>