vue关于下载文件常用的几种方式

import axios from "axios"
import * as auth from '@/utils/auth.js'
let ajax = axios.create({
    baseURL: process.env.VUE_APP_BASE_API,
    timeout: 100000
});
ajax.interceptors.request.use(config => {
        config.headers = {
            Authorization: auth.getToken(),
            // OrgId: auth.getUser().orgId,
            // UserId: auth.getUser().id,
        }
        return config
    },
    err => {
        return Promise.reject(err)
    })
let downloadFile = async (url, formData, options) => {
    await ajax.post(url, formData, {responseType: 'arraybuffer'}).then(resp => download(resp, options))
}
let getFile = async (url, options) => {
    await ajax.get(url, {responseType: 'blob'}).then(resp => download(resp, options))
}
let download = (resp, options) => {
    let blob = new Blob([resp.data], {type: options.fileType ? options.fileType : 'application/octet-binary'})
    //创建下载的链接
    let href = window.URL.createObjectURL(blob)
    downloadBlob(href, options.fileName)
}
let downloadBlob = (blobUrl, fileName, revokeObjectURL) => {
    let downloadElement = document.createElement('a')
    downloadElement.href = blobUrl
    //下载后文件名
    downloadElement.download = fileName
    document.body.appendChild(downloadElement)
    //点击下载
    downloadElement.click()
    //下载完成移除元素
    document.body.removeChild(downloadElement)
    if (revokeObjectURL == null || revokeObjectURL) {
        //释放掉blob对象
        window.URL.revokeObjectURL(blobUrl)
    }
}
let getDownloadFileUrl = async (url, fileType) => {
    let blob
    await ajax.get(url, {responseType: 'blob'}).then(resp => {
        blob = new Blob([resp.data], {type: fileType ? fileType : 'application/octet-binary'});
    })
    return window.URL.createObjectURL(blob);
}
let getDownloadFileUrlByPost = async (url, data, fileType) => {
    let blob
    await ajax.post(url, data, {responseType: 'blob'}).then(resp => {
        blob = new Blob([resp.data], {type: fileType ? fileType : 'application/octet-binary'});
    })
    return window.URL.createObjectURL(blob);
}
let getDownloadFileBlob = async (url, fileType) => {
    let blob
    await ajax.get(url, {responseType: 'blob'}).then(resp => {
        blob = new Blob([resp.data], {type: fileType ? fileType : 'application/octet-binary'});
    })
    return blob;
}
export default {
    ajax,
    downloadFile,
    getFile,
    getDownloadFileUrl,
    getDownloadFileUrlByPost,
    getDownloadFileBlob,
    downloadBlob
}

//先引用
import ajax from '../../utils/ajax.js'
//使用
ajax.downloadFile('URL',null,{下载的文件名称})

npm install -g cnpm --registry=https://registry.npm.taobao.org

npm install --g vue-cli

npm install

npm run dev/npm run serve

npm i element-ui -S

    import ElementUI from 'element-ui';
    import 'element-ui/lib/theme-chalk/index.css';
    Vue.use(ElementUI);

npm install vue-router --save 

import Vue from 'vue'
import VueRouter from 'vue-router';
Vue.use(VueRouter); 
import XXX "../src/components/xxx";
  
const routes = [
  {
    path:'/'
    component: XXX
  }, 
]
 
const router = new VueRouter({
  routes
})
 
export default router

import router from "../router";
    
new Vue({
  router,
  el: '#app',
  components: { App },
  template: '<App/>'
})

npm install --save vue-axios  

import axios from 'axios'
import VueAxios from 'vue-axios'
Vue.use(VueAxios, axios)