关于vue.js:vue后台传文件流blob对象前台点击下载

 this.$axios .get("/wx/villageargot/export", { params: { subDistrictId: this.query.streetId }, responseType: "blob" }) .then(res => {     const link = document.createElement("a");     let blob = new Blob([res.data], { type: "application/vnd.ms-excel" });     link.style.display = "none";     link.href = URL.createObjectURL(blob);     let num = "";     for (let i = 0; i < 10; i++) {        num += Math.ceil(Math.random() * 10);     }     link.setAttribute("download", "用户_" + num + ".xls");     document.body.appendChild(link);     link.click();     // 间接删除了a标签 无需通过 window.URL.revokeObjectURL(link.href)开释内存     document.body.removeChild(link);     NProgress.done(); }) .catch(error => { this.$Notice.error({ title: "谬误", desc: "网络连接谬误" }); });