chj_decorate_manage/config/download.js

export default (url = '', baseUrl = '', data = {}, dataType = 'JSON', type = 'GET') => {
  var html = '<div class="ivu-spin-fullscreen ivu-spin-fullscreen-wrapper"><div class="ivu-spin ivu-spin-fix ivu-spin-show-text ivu-spin-fullscreen"><div class="ivu-spin-main"><span class="ivu-spin-dot"></span> <div class="ivu-spin-text"><div><i class="ivu-icon ivu-icon-load-c demo-spin-icon-load" style="font-size: 18px;"></i><div>Loading</div></div></div></div></div></div>'
  $('#app').append(html);
  type = type.toUpperCase();
  if (process.env.NODE_ENV === 'development') {
    baseUrl = baseUrl;
  } else if (process.env.NODE_ENV === 'production') {
    if (baseUrl) {
      switch (baseUrl) {
        case '/landcrm':
          baseUrl = '/landcrm'; //其他环境
          break;
        case '/rcrm':
          baseUrl = '/landcrm'; //报表地址
          break;

        case '/decorationManage':
          baseUrl = '/decorationManage'; //收费地址
          break;

        default:
          baseUrl = "";
          break;
      }
    }
  }

  url = baseUrl + url;

  let dataStr = ''; //数据拼接字符串


  if (type == 'GET') {
    if (typeof (data) == "object") {
      Object.keys(data).forEach(key => {
        dataStr += key + '=' + data[key] + '&';
      })
    }
    if (dataStr !== '') {
      dataStr = dataStr.substr(0, dataStr.lastIndexOf('&'));

    }
    url = url + '?' + dataStr;
  } else {
    Object.keys(data).forEach(key => {
      //		if(data[key])
      //		{
      dataStr += key + '=' + data[key] + '&';
      //		}
    })
    dataStr = dataStr.substr(0, dataStr.lastIndexOf('&'));
  }

  var xhr = new XMLHttpRequest();

  xhr.open(type, url, true);
  xhr.responseType = 'arraybuffer';
  xhr.setRequestHeader("companyId", localStorage.companyId || "");
  xhr.onload = function () {
    if (this.status === 200) {
      //提取文件名
      var filename = "";
      var disposition = xhr.getResponseHeader('Content-disposition');
      if (disposition && disposition.indexOf('attachment') !== -1) {
        var filenameRegex = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/;
        var matches = filenameRegex.exec(disposition);
        if (matches != null && matches[1]) filename = decodeURI(matches[1].replace(/['"]/g, ''));
      }
      var type2 = xhr.getResponseHeader('Content-Type');

      if (typeof File === 'undefined' && typeof Blob === 'undefined') {
        alert("当前浏览器不支持下载，请使用最新浏览器重试");
        return;
      }

      var blob = typeof File === 'function' ?
        new File([this.response], filename, {
          type: type2
        }) :
        new Blob([this.response], {
          type: type2
        });
      if (typeof window.navigator.msSaveBlob !== 'undefined') {
        window.navigator.msSaveBlob(blob, filename);
      } else {
        var URL = window.URL || window.webkitURL;
        var downloadUrl = URL.createObjectURL(blob);

        if (filename) {
          var a = document.createElement("a");
          if (typeof a.download === 'undefined') {
            window.location = downloadUrl;
          } else {
            a.href = downloadUrl;
            a.download = filename;
            document.body.appendChild(a);
            a.click();
          }
        } else {
          window.location = downloadUrl;
        }
        setTimeout(function () {
          URL.revokeObjectURL(downloadUrl);
        }, 100);
      }
    }
    $('.ivu-spin-fullscreen-wrapper').remove();
  };
  xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
  xhr.setRequestHeader("token", localStorage.token || "");
  if (type == 'POST') {
    xhr.send(dataStr);
  } else {
    xhr.send();
  }
}