iframe下载前端不能自定义文件名,需要后端处理. // 下载文件 downloadFile(item) { const iframe = document.createElement("iframe"); iframe.style.display = "none"; // 防止影响页面 iframe.style.height = 0; // 防止影响页面 iframe.src = item.url; document.body.appendChild(iframe); // 这一行必须，iframe挂在到dom树上才会发请求 // 5分钟之后删除（onload方法对于下载链接不起作用，就先抠脚一下吧） setTimeout(()=>{ iframe.remove(); }, 5 * 60 * 1000); }当时使用的这个方案下载文件,后端使用的是阿里云的oss对象存储,然后下载MP4文件的时候一直打开预览,不会触发浏览器下载行为.后面查看阿里云文档,可以设置文件的响应头或者,在请求url后面拼接'?response-content-type=application/octet-stream';例子:/** * 下载文件 * @param link 文件下载地址 */ export const download = links => { const iframe = document.createElement("iframe"); iframe.style.display = "none"; // 防止影响页面 iframe.style.height = 0; // 防止影响页面 iframe.src = links+'?response-content-type=application/octet-stream'; document.body.appendChild(iframe); // 这一行必须，iframe挂在到dom树上才会发请求 // 30s之后删除 setTimeout(() => { iframe.remove(); }, 30000); };a标签下载,支持前端自定义文件名,blob要带上 responseType: 'blob'哦常见下载功能download(downloadUrl, data = {}, fileName = '下载.xlsx') { const option = { responseType: 'blob', }; Axios.post(downloadUrl, data, option).then((res) => { const { data: bData } = res; const blob = new Blob([bData], { type: 'application/zip' }); if ('download' in document.createElement('a')) { // 非IE下载 const elink = document.createElement('a'); elink.download = fileName; elink.style.display = 'none'; elink.href = URL.createObjectURL(blob); document.body.appendChild(elink); elink.click(); URL.revokeObjectURL(elink.href); // 释放URL 对象 document.body.removeChild(elink); } else { // IE10+下载 navigator.msSaveBlob(blob, fileName); } }); },下载2-优化export const downloadFile = (downloadUrl, data, fileName = '导出列表.xlsx', type = 'application/octet-stream') => { const option = { responseType: 'blob', } return Axios.post(downloadUrl, data, option).then((res) => { const { data: bData } = res; const blob = new Blob([bData], {type}); // 正常情况下blob.type为空,因为返回的是文件流,而返回json就说明报错了 if (blob.type === 'application/json') { const reader = new FileReader(); reader.onload = function () { const content = reader.result; const { msg } = JSON.parse(content); // 错误信息 Message.error(msg); }; reader.readAsText(bData); return; } if ('download' in document.createElement('a')) { // 非IE下载 const elink = document.createElement('a'); elink.download = fileName; elink.style.display = 'none'; elink.href = URL.createObjectURL(blob); document.body.appendChild(elink); elink.click(); URL.revokeObjectURL(elink.href); // 释放URL 对象 document.body.removeChild(elink); } else { // IE10+下载 navigator.msSaveBlob(blob, fileName); } }) };下载3get downloadGet(downloadUrl, params = {}, fileName = '模板.xls') { const loading = this.$loading({ lock: true, text: '请稍候', background: 'rgba(0, 0, 0, 0)' }); const option = { responseType: 'blob', }; Axios.get(downloadUrl, {params, ...option}).then((res) => { loading.close(); if(res.data&&res.data.type=='application/json') { this.$message({ type: 'error', message: '导出出错！' }); return; } const blob = new Blob([res.data], { type: "application/zip" }); if ('download' in document.createElement('a')) { // 非IE下载 const elink = document.createElement('a'); elink.download = fileName; elink.style.display = 'none'; elink.href = URL.createObjectURL(blob); document.body.appendChild(elink); elink.click(); URL.revokeObjectURL(elink.href); // 释放URL 对象 document.body.removeChild(elink); } else { // IE10+下载 navigator.msSaveBlob(blob, fileName); } }).catch(() => { loading.close(); }); }常见下载方式this.axios({ url: baseUrl + '/mails/downloadZipFile', method: 'GET', responseType: 'arraybuffer', params: { strMailId: this.parm['strMailId'] } }).then((res) => { const content = res.data const blob = new Blob([content], {type: "application/zip"}) var timestamp = (new Date()).valueOf(); const fileName = timestamp + '.zip' if ('download' in document.createElement('a')) { // 非IE下载 const elink = document.createElement('a') elink.download = fileName elink.style.display = 'none' elink.href = window.URL.createObjectURL(blob) document.body.appendChild(elink) elink.click() window.URL.revokeObjectURL(elink.href) // 释放URL 对象 document.body.removeChild(elink) } else { // IE10+下载 navigator.msSaveBlob(blob, fileName) } }).catch((err) => { console.log(err); })vue3import type { AxiosResponse } from 'axios' import { replace } from 'lodash' const getFileNameFromContentDisposition = (text?: string, defaultFilename?: string) => { const defaultFileName = defaultFilename || '下载文件.csv' if (!text) { return defaultFileName } const strArr = text.split(';') for (let index = 0; index < strArr.length; index++) { const element = strArr[index] if (element.trim().startsWith('filename')) { const name = element.substring(element.indexOf('=') + 1).trim() const nameR = replace(name, /\"/, '') return decodeURIComponent(nameR) } } return defaultFileName } export function exportBlobFile(res: AxiosResponse, type = 'application/vnd.ms-excel', defaultFilename?: string) { try { const fileType = res.headers['content-type'] || type const fileContent = res.data const fileName = getFileNameFromContentDisposition(res.headers['content-disposition'], defaultFilename) let blob = new Blob([fileContent], { type: fileType }) // 默认excel let filename = fileContent.filename || fileName let URL = window.URL || window.webkitURL let objectUrl = URL.createObjectURL(blob) let a = document.createElement('a') a.href = objectUrl a.download = filename document.body.appendChild(a) a.click() a.remove() } catch (error) { console.error('下载失败', error) } }