增加个数为0，total提示，不予导出

src/components/student/OnlineClassModelStudent.vue

@@ -127,6 +127,7 @@ import {ONLINE_COURSE_DEL} from "@/api/ThirdApi";
 import {useStore} from "vuex";
 import {useAsyncStu, useResetRef} from "@/utils/useCommon";
 import {downLoadXlsx} from "@/utils/zipdownload";
+import {message} from "ant-design-vue";
 const props = defineProps({
   permissions: {
     type: String,
@@ -329,6 +330,9 @@ function exportStu() {
   window.open(`${process.env.VUE_APP_BASE_API}/admin/student/exportOnlineStudent?type=3&&thirdType=8&pid=${searchParams.value.pid}`);
 }
 function exportStudy() {
+  if(studentList.value.length == 0){
+    return message.warning('暂无可导出的学习记录')
+  }
   downLoadXlsx(`${process.env.VUE_APP_BASE_API}/admin/student/exportOnlineStudentDetail?type=3&&thirdType=8&pid=${searchParams.value.pid}`,'在线课学员')
 }
 defineExpose({