jinying_fullscreen/config/download.js

export default (url = '', baseUrl='', data = {},dataType = 'JSON', type = 'GET', requestType='FORMDATA') => {
	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';//云环境 基础服务
           	break;
          default:
            baseUrl = "";
            break;
        }
     }
  }
  
  url = baseUrl + url;

	let dataStr = ''; //数据拼接字符串
	for(var key in data){
      if(typeof(data[key]) == "undefined") {
        data[key] = '';
      }
    }
	
	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{
		if(requestType === "FORMDATA")
    {
      Object.keys(data).forEach(key => {
				dataStr += key + '=' + data[key] + '&';
			})
			dataStr = dataStr.substr(0, dataStr.lastIndexOf('&'));
    }
    else if(requestType === "JSON")
    {
      dataStr = JSON.stringify(data)
    }
	}

  var xhr = new XMLHttpRequest();

  xhr.open(type, url, true);
  xhr.responseType = 'arraybuffer';
  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();
  };
  if(requestType && requestType === "JSON") {
  	xhr.setRequestHeader('Content-type', 'application/json');
  }
  else {
  	xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
  }
   if(localStorage.token != "" && typeof(localStorage.token) !== "undefined") {
//  	header_content.token = localStorage.token;
    	xhr.setRequestHeader('token', localStorage.token);
    }
    if(localStorage.user_id != "" && typeof(localStorage.user_id) !== "undefined") {
//  	header_content.userId = localStorage.user_id;
    	xhr.setRequestHeader('userId', localStorage.user_id);
    }
  if(type == 'POST') {
  	xhr.send(dataStr);
  }
  else {
  	xhr.send();
  }
}