优化线下考试考号长度判断

sexam/src/main/java/com/xhkjedu/sexam/mapper/exam/EClassStudentMapper.java

     List<Map> listStuByExamId(@Param("examid") Integer examid);
 
     //获取考试关联学校的准备考号长度
-    List<Integer> listSchoolExamNoLength(@Param("examid") Integer examid);
+    List<Integer> listSchoolExamNoLength(@Param("classids") List<Integer> classids);
 }

sexam/src/main/java/com/xhkjedu/sexam/service/exam/EBaseService.java

             Integer num = eClassStudentMapper.getNoExamNoNumByClassIds(classids);//根据班级ids获取没有考号学生数量
             if (num != 0) return new ResultVo(1, "有学生未设置考号，请先设置");
             //验证选择学校的准考证号长度是否一致；获取参加考试的学校所有学生考号长度
-            List<Integer> schoolExamNo = eClassStudentMapper.listSchoolExamNoLength(examid);
+            List<Integer> schoolExamNo = eClassStudentMapper.listSchoolExamNoLength(classids);
             if(N_Utils.isListNotEmpty(schoolExamNo) && schoolExamNo.size() > 1){
                 return new ResultVo(1, "选择考试班级学生考号长度不一致");
             }

sexam/src/main/resources/mapper/exam/EClassStudentMapper.xml

     <!--获取考试关联学校的准备考号长度-->
     <select id="listSchoolExamNoLength" resultType="java.lang.Integer">
         select LENGTH(u.examno) from t_user u
-        left join e_class_student cs on u.userid=cs.studentid
-        left join e_class ec on cs.classid=ec.classid and cs.examid=ec.examid
-        where ec.examid=#{examid} and u.usertype=2 and u.userstate=1 group by LENGTH(u.examno)
+        left join t_class_student cs on u.userid=cs.studentid
+        where u.usertype=2 and u.userstate=1 and cs.classid in
+        <foreach collection="classids" item="classid" index="index" separator="," open="(" close=")">
+            #{classid}
+        </foreach>
+        group by LENGTH(u.examno)
     </select>
 </mapper>