临时表单导出Excel

function ExportExcel(url, vals) {
        var form = jQuery("<form action='" + url + "'  method='post'></form>");
        for (var key in vals) {
            var hInput = $("<input type='hidden'></input>").attr("name", key).val(vals[key]);
            form.append(hInput);

        }
        jQuery("body").append(form);
        form.submit();
        form.remove();
}

vals参数为对象