vue项目中下载后台给的文件zip格式的文件

引用axios

import axios from 'axios'

得到下载文件的地址 拼接参数contractUrl方法

contractUrl(url data) {
    return url + (url.indexOf('?') < 0 ? '?' : '&') + this.splitData(data)
  }
   // 拆分数据
  splitData(data) {
    let url = ''
    for (let k in data) {
      if (data.hasOwnProperty(k) && data[k] != undefined) {
        let value = data[k] || ''
        url = url + '&' + k + '=' + encodeURIComponent(value)
      } else {
        url = url
      }
    }
    return url ? url.substring(1) : ''
  }

    let URLs = url
    let URLe = that.contractUrl(URLs, listQuery)

    axios({
      // 用axios发送post请求
      method: 'get',
      url: URLe, // 请求地址
      data: data, // 参数
      headers: {
        token: localStorage.getItem('token'),
        'Content-Type': 'application/json',
      },
      responseType: 'blob', // 表明返回服务器返回的数类据型
    })
      .then((res) => {
      //获取后台下载失败返回的信息
        const fileReader = new FileReader()
        if (res.data.type === 'application/json') {
          // 说明是普通对象数据，读取信息
          const fileReader = new FileReader()
          fileReader.onloadend = () => {
            const jsonData = JSON.parse(fileReader.result)
            // 后台信息
            that.$message.error(jsonData.message)
            setTimeout(() => {
              this.tableState = true
            }, 1000)
          }
          fileReader.readAsText(res.data)
        } else {
          const link = document.createElement('a')
          let blob = new Blob([res.data], { type: 'application/zip' })
          link.style.display = 'none'
          link.href = URL.createObjectURL(blob)
          const date = currentTime('')
          link.setAttribute('download', 'xx记录' + date + '.zip')
          document.body.appendChild(link)
          link.click()
          document.body.removeChild(link)
          setTimeout(() => {
            this.tableState = true
          }, 1000)
        }
        console.log(res)
      })
      .catch((error) => {
        that.$message.warning('暂无数据')
        setTimeout(() => {
          this.tableState = true
        }, 1000)
      })