update

mec-biz/src/main/resources/config/contracts/courses.ftl

@@ -93,9 +93,11 @@
                 <div class="iInfo">
                     <span>学生姓名：${studentInfo.name!}</span>
                 </div>
+                <#if studentInfo.grade??>
                 <div class="iInfo">
                     <span>所在班级：${studentInfo.grade!} ${studentInfo.clazz!}</span>
                 </div>
+                </#if>
                 <div class="iInfo">
                     <span>所在声部：${studentInfo.subject.name!}</span>
                 </div>