下载文件

import { saveAs } from 'file-saver'
import { Notification, MessageBox, Message, Loading } from 'element-ui'

export function download(url, params, filename, config) {
  downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
  return axios.post(url, params, {
    transformRequest: [(params) => { return tansParams(params) }],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    responseType: 'blob',
    ...config
  }).then(async (data) => {
    const isBlob = blobValidate(data);
    if (isBlob) {
      const blob = new Blob([data])
      saveAs(blob, filename)
    } else {
      const resText = await data.text();
      const rspObj = JSON.parse(resText);
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      Message.error(errMsg);
    }
    downloadLoadingInstance.close();
  }).catch((r) => {
    console.error(r)
    Message.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close();
  })
}

预览pdf文件

export function previewFile(params) {
  let previewLoadingInstance = Loading.service({ text: "正在加载预览文件数据，请稍候", spinner: "el-icon-loading", background: "rgba(0, 0, 0, 0.7)", })
     var url = "/common/preview"
     console.log(params)
     return  axios({
      method: 'get',
      url:process.env.VUE_APP_BASE_API + url,
      params: params,
      responseType: 'blob',
      headers: { 'Authorization': 'Bearer ' + getToken() }
  }).then((res) => {
         const isBlob = blobValidate(res.data);
         if (isBlob) {
             const blob = new Blob([res.data], { type: 'application/pdf;charset=utf-8' })
             const href = URL.createObjectURL(blob);
             window.open(href, 'newWindow');
         }
         previewLoadingInstance.close();
     }).catch((r) => {
      Message.error('预览文件出现错误，请联系管理员！')
      previewLoadingInstance.close();
    })
 }