iDialog组件自定义的ajaxForm保存不起作用

function openEditDiag(bookingId) {
    var $editDialog = $('#editDialog');
    $editDialog.iDialog({
        title: '编辑数据',
        width: 950,
        height: 500,
        closed: false,
        cache: false,
        href:j_c_u+'content2'+"&bookingId="+bookingId,
        modal: true,
        buttons: [{
            text: '保存2',
            iconCls: 'fa fa-save',
            btnCls: 'topjui-btn-blue',
            url:'/api/jsonws/invoke',
            handler:'ajaxForm',
            reload:[
                {type:'datagrid', id:'mainDg'}
            ]
        }, {
            text: '关闭',
            iconCls: 'fa fa-close',
            btnCls: 'topjui-btn-red',
            handler: function () {
                $editDialog.iDialog('close');
            }
        }],
        onLoad: function () {
            //加载表单数据
           // $.getJSON(_ctx + '/json/product/detail.json?bookingId=' + bookingId, function (data) {
            //    $editDialog.form('load', data);
            //});
            var formData = {
                cmd:'{"/j2-easyui-encalendar-portlet.encalendar/get-calendar-booking-by-id":{}}',
                p_auth: j2_authToken,
                calendarBookingId:bookingId
            };
            jQuery.ajax({
                type: 'POST',
                url: '/api/jsonws/invoke',
                dataType: "json",
                contentType: "application/x-www-form-urlencoded",
                data: formData,
                success: function (data) {
                   $editDialog.form('load', data.entry);
                   updateEntryContent2();
                },
                error: function (data) {
                    alert("error");     
                }
            });
        }
    });
}

{
    text: '保存2',
    iconCls: 'fa fa-save',
    btnCls: 'topjui-btn-blue',
    url:'/api/jsonws/invoke',
    handler:'ajaxForm',
    reload:[
        {type:'datagrid', id:'mainDg'}
    ]
}