fix bug applyinfomapp

src/main/resources/config/mybatis/ApplyInfoMapper.xml

@@ -127,7 +127,7 @@
 				update_time_ = #{updateTime},
 			</if>
 			<if test="grade != null">
-				grade_ = #{grade}
+				grade_ = #{grade},
 			</if>
 			<if test="remark != null">
 				remark = #{remark}