node中转后台提供的接口,前端拿到路由进行导出

标签：dispatch   navigator   chm   mss   creat   link   eve   string   document   

node端
第一步 先创建一个路由

‘use strict‘

/**
 * @param {Egg.Application} app - egg application
 */

module.exports = ({
  router,
  controller: {
    searchStastics: {
      searchRanking,
    },
  },
}) => {
  // 搜索排行导出
  router.get(‘/search/search_ranking_export‘, searchRanking.searchRankingExport)
}

第二步:
controller

  /**
   * 搜索排行列表导出
   */
  async searchRankingExport() {
    await this.searchCommomExport(‘/search/ranking‘)
  }
 /**
   * 搜索排行/搜索记录导出
   * @param { String} url 传入的接口
   */
  async searchCommomExport(url) {
    // 后台需要秒,同一个接口csv=1表示导出,不传或者为0表示正常的列表
    const { service } = this
    const query = await this.searchCommon()
    query.csv = 1
    const data = await service.common.tarsServer.tarsServerHttp(url, {
      dataType: ‘buffer‘,
      data: query,
    })
    this.ctx.set(‘Content-disposition‘, ‘attachment; filename="write.xlsx"‘)
    this.ctx.set(‘Content-type‘, ‘application/octet-stream‘)
    this.ctx.body = data
  }
  /**
   * 搜索排行/搜索记录列表和导出的公共参数
   */
  async searchCommon() {
    const { ctx } = this
    const { startTime, endTime, ...params } = ctx.request.query
    return {
      startTime: Math.round(startTime / 1000),
      endTime: Math.round(endTime / 1000),
      ...params,
    }
  }

第三步 前端自己调用

const exportExcelUrl = ‘/user_exchange_record/export‘
export function exportFile(url, params) {
  return request({
    responseType: ‘blob‘,
    headers: {
      ‘Content-Type‘: ‘application/json‘,
    },
    timeout: 1000 * 60,
    url: url,
    method: ‘get‘,
    params,
  })
}

async exportFileFun() {
  const file = await exportFile(this.exportItem.apiUrl, res)
  this.saveFile(file, ‘文件下载‘)
},

saveFile(file, filename) {
  const ieKit = /(?:ms|\()(ie)\s([\w\.]+)|trident|(edge|edgios|edga|edg)/i.test(window.navigator.userAgent)
  const blobData = new Blob([file], { type: ‘application/vnd.ms-excel‘ })
  if (ieKit) {
    navigator.msSaveBlob && navigator.msSaveBlob(blobData, filename)
  } else {
    const objectURL = window.URL.createObjectURL(blobData)
    const save_link = document.createElement(‘a‘)
    const event = document.createEvent(‘MouseEvents‘)
    save_link.href = objectURL
    save_link.download = filename + ‘.xlsx‘
    event.initMouseEvent(‘click‘, true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
    save_link.dispatchEvent(event)
    window.URL.revokeObjectURL(objectURL)
  }
},

node 端怎么通过exceljs实现excel的导出 请查看https://www.cnblogs.com/antyhouse/p/13256093.html

node中转后台提供的接口,前端拿到路由进行导出

标签：dispatch   navigator   chm   mss   creat   link   eve   string   document   

原文地址：https://www.cnblogs.com/antyhouse/p/13256265.html