excel导出使用get请求参数过长问题

 1 var postDownLoadFile = function (options) {
 2     var config = $.extend(true, {method: 'post'}, options);
 3     var $iframe = $('<iframe id="down-file-iframe" />');
 4     var $form = $('<form target="down-file-iframe" method="' + config.method + '" />');
 5     $form.attr('action', config.url);
 6     for (var key in config.data) {
 7         $form.append('<input type="hidden" name="' + key + '" value="' + config.data[key] + '" />');
 8     }
 9     $iframe.append($form);
10     $(document.body).append($iframe);
11     $form[0].submit();
12     $iframe.remove();
13 }
14 
15 //导出
16 $("#btnExport_year").on('click',
17     function () {
18         var param = {};
19         postDownLoadFile({
20             url: path + '/monthlyCollection/exportExcelDoc.json',
21             data: param,
22             method: 'post'
23         });
24 });