axios+post获取并下载后台返回的二进制流
let url = $.getCookie('prefixUrl')+'/expenseword/exportWords';
let vm = this;
let len=vm.checkedIds.length;
if(len let axios+post获取并下载后台返回的二进制流
let url = $.getCookie('prefixUrl')+'/expenseword/exportWords';
let vm = this;
let len=vm.checkedIds.length;
if(len let