<template> <div>  <el-button type="primary" size="small" :loading="btnLoading" @click="exportFile">导出</el-button> </div></template><script>import axios from "axios";export default { data() {  return {   btnLoading: false  }; }, methods: {  // responseType 响应类型  exportFile() {   this.btnLoading = true;   axios({    method: "get",    url: "/api",    headers: {     token: "79faf82271944fe38c4f1d99be71bc9c"    },    responseType: "blob"   })    .then(res => {     this.btnLoading = false;     if (res.data.type) {      // 文件下载      const blob = new Blob([res.data], {       type: "application/vnd.ms-excel"      });      let link = document.createElement("a");      link.href = URL.createObjectURL(blob);      link.setAttribute("download", "导出文件.xlsx");      link.click();      link = null;      this.$message.success("导出成功");     } else {      // 返回json      this.$message.warning(res.data.msg);     }    })    .catch(err => {     this.btnLoading = false;     this.$message.error("下载失败");    });  } }};</script>

let baseDownloadUrl = "http://xxxxxxx:8080" // 域名const PATH = {	userList："vue/export/userList" // 后台接口地址}// 封装v-out指令Vue.directive("out", {	inserted: (el, binding) => {		el.addEventListener("click", () => {			console.log(binding.value) // 自定义指令传请求参数			let a = document.createElement("a") // 创建a标签			// 处理请求参数，在url后面拼接			let params = "?"			for (let key in binding.value.params) {				params = params + key + "=" + binding.value.params[key] + "&"			}			console.log(params)			a.style.display = "none"			// 测试导出文件			// link.href =	"https://dl.google.com/tag/s/appguid%3D%7B8A69D345-D564-463C-AFF1-A69D9E530F96%7D%26iid%3D%7BA381F257-9F2F-3652-F0EC-56B9B2C86F92%7D%26lang%3Dzh-CN%26browser%3D4%26usagestats%3D1%26appname%3DGoogle%2520Chrome%26needsadmin%3Dprefers%26ap%3Dx64-stable-statsdef_1%26installdataindex%3Dempty/update2/installers/ChromeSetup.exe"			// a标签添加导出地址			a.href =				baseDownloadUrl +				PATH[binding.value.pathName] +				putCode +				(params || "")			a.setAttribute("download", "文件名") // a标签添加download属性，导出文件名需要就添加，不需要则为空			document.body.appendChild(a)			a.click() // 触发a标签点击事件		})	}})

<el-button   size="small" type="primary"   v-out="{  pathName: "userList",  params: //{请求参数}}" >导出</el-button>

export function expotOut (searchList, pathName, xlsName) { // 获取时间，这一步是在下载时文件名带下载日期，例如：用户信息2020-04-27.xls,如无需要可以去掉 let d = new Date() let month = (d.getMonth() + 1) let day = d.getDate() let time = d.getFullYear() + "-" + (String(month).length > 1 ? month : "0" + month) + "-" + (String(day).length > 1 ? day : "0" + day) // 地址 let baseURL = "http://xxxxxxx:8080" // 域名 const PATH = {  userList："vue/export/userList", // 后台接口地址 } // 参数 let params = "?" for (let key in searchList) {  params = params + key + "=" + searchList[key] + "&" } function createObjectURL (object) { return (window.URL) ? window.URL.createObjectURL(object) : window.webkitURL.createObjectURL(object) } var xhr = new XMLHttpRequest() var formData = new FormData() xhr.open("get", baseURL + PATH[pathName] + params) // url填写后台的接口地址，如果是post，在formData append参数（参考原文地址） xhr.setRequestHeader("token", localStorage.getItem("token")) xhr.responseType = "blob" xhr.onload = function (e) {  if (this.status === 200) {   var blob = this.response   // xls文件名称   var filename = `${xlsName}${time}.xls`   if (window.navigator.msSaveOrOpenBlob) {    navigator.msSaveBlob(blob, filename)   } else {    var a = document.createElement("a")    var url = createObjectURL(blob)    a.href = url    a.download = filename    document.body.appendChild(a)    a.click()    window.URL.revokeObjectURL(url)   }  } } xhr.send(formData)}

 methods: {  // 导出  outFile () {   expotOut(this.searchList, // 导出请求参数    "userList", // 后台地址PATH对象的key    "用户信息"// 导出文件名字   )  },  }