增加教师教研列表返回值

sapi/src/main/resources/mapper/research/ResearchUserMapper.xml

     <!-- 教师参与教研列表 -->
     <select id="listUserResearchs" resultType="java.util.Map">
          SELECT r.researchid,r.researchname,r.researchcover,r.duration,r.filesize,r.starttime,r.stoptime,r.mp4code,
-        r.createid,r.createtime,u.username AS createname,r.readnum,r.researchpath,r.publiced,r.schoolid,ru.rustate
+        r.createid,r.createtime,u.username AS createname,r.readnum,r.researchpath,r.publiced,r.schoolid,r.hashb,ru.rustate
         FROM t_research_user ru LEFT JOIN t_research r ON ru.researchid=r.researchid
         LEFT JOIN t_user u ON r.createid=u.userid
         WHERE ru.userid=#{userid} and r.starttime&lt;=#{timestamp}