开始作业时生成qn

sstudy/src/main/resources/mapper/paperstudent/PaperStudedntScantronMapper.xml

 
     <!--获取原试卷中试题-->
     <select id="listPaperScantrons" resultType="com.xhkjedu.sstudy.model.paperstudent.TPaperStudentScantron">
-        SELECT psc.pscaid, psc.paperid,psc.ctype,psc.psorder as qorder,psc.psscore as qscore,
+        SELECT psc.pscaid, psc.paperid,psc.ctype,psc.psorder as qorder,psc.qn,psc.psscore as qscore,
         ps.classid,ps.studentid,ps.schoolid,ps.psid
         FROM t_paper_scantron psc LEFT JOIN t_paper_student ps ON psc.paperid=ps.paperid
         WHERE ps.psid=#{psid}