搜索教师无数据处理，考试无学员导出数据添加提示

src/api/request.js

@@ -370,7 +370,9 @@ export function usePage(_url, params, init = true,listing = false) {
       state.totalPage = r.data.total/10 || 1;
       state.total = r.data.total;
       state.loading = false;
-    });
+    }).catch(err => {
+      state.loading = false;
+    })
   }
 
   init && fetch();
@@ -494,6 +496,9 @@ export async function request(_url, params) {
     if (res.code === 0 || res.code === 200) {
       return res;
     }
+    if (res.code === 4 ){
+      return Promise.reject(res);
+    }
     if (res.code === 1000 || res.code === 1002) {
       window.location.href = process.env.VUE_APP_LOGIN_URL + encodeURIComponent(window.location.protocol + process.env.VUE_APP_BOE_API_URL + process.env.VUE_APP_BASE + router.currentRoute.value.fullPath)
       localStorage.removeItem('refreshPage')

src/components/drawers/router/RouterExaminationManage.vue

@@ -442,6 +442,10 @@ export default {
 
     {/* 导出数据 */ }
     function exportData() {
+      if(state.tabledata.length==0){
+        message.error("没有数据可以导出");
+        return
+      }
       // window.open(`${process.env.VUE_APP_BASE_API}/admin/exam/manage/exportExam?chapterId=${props.datasource.chapterId}&targetId=${props.datasource.routerId}&taskId=${props.datasource.courseId}&type=${1}`)
       window.open(`${process.env.VUE_APP_BASE_API}/admin/exam/manage/exportExam?currentStageId=${props.datasource.chapterId}&type=${1}&pid=${props.datasource.routerId}&targetId=${props.datasource.routerId}&taskId=${props.datasource.courseId}&taskType=${props.datasource.type}`)