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import axios from 'axios'
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import { getToken } from '@/utils/auth'
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import { Loading, Message } from 'element-ui'
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/*
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* @params {string} url 请求拼接地址
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* @params {object} info 请求参数params或data
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*/
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let loading;
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export async function download(url,method='get',info,filename){
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loading = Loading.service({
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lock:true,
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background:"rgba(0,0,0,0.4)",
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text:"文件正在生成中..."
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})
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let options = {
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baseURL:process.env.VUE_APP_BASE_API,
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url,
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method,
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responseType: 'blob',
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timeout:10000,
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headers: {
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Accept: 'application/json','Content-Type':'application/json; charset=utf-8',
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withCredentials: true,
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Authorization:"Bearer " + getToken()
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},
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}
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if(method === 'get'){
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Object.defineProperty(options,'params',{
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value:info,
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enumerable:true,
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writable:false
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})
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}
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if(method === 'post'){
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Object.defineProperty(options,'data',{
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value:info,
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enumerable:true,
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writable:false
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})
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}
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try {
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const response = await axios.request(options)
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loading.close()
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// 提取文件名
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if(!filename){
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filename = response.headers['content-disposition']?.match(
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/filename=(.*)/
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)[1] || ''
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}
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// 将二进制流转为blob
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const blob = new Blob([response.data], { type: 'application/octet-stream' })
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if (typeof window.navigator.msSaveBlob !== 'undefined') {
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// 兼容IE，window.navigator.msSaveBlob：以本地方式保存文件
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window.navigator.msSaveBlob(blob, decodeURI(filename))
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} else {
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// 创建新的URL并指向File对象或者Blob对象的地址
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const blobURL = window.URL.createObjectURL(blob)
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// 创建a标签，用于跳转至下载链接
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const tempLink = document.createElement('a')
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tempLink.style.display = 'none'
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tempLink.href = blobURL
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tempLink.setAttribute('download', decodeURI(filename))
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// 兼容：某些浏览器不支持HTML5的download属性
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if (typeof tempLink.download === 'undefined') {
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tempLink.setAttribute('target', '_blank')
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}
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// 挂载a标签
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document.body.appendChild(tempLink)
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tempLink.click()
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document.body.removeChild(tempLink)
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// 释放blob URL地址
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window.URL.revokeObjectURL(blobURL)
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}
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}catch (err){
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console.error(err)
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loading.close()
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Message({
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type:'error',
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message:err
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})
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}
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}
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