on () {
        var table = layui.table;
        var $ = layui.$;
        var form = layui.form;

        table.render({
            elem: '#oauth2-table'
            , url: '/oauth2/list'
            , page: false
            , skin: 'nob'
            , size: 'lg'
            , cols: [
                [
                    {field: 'type', title: '类型', width: "35%", hidden: true}
                    , {field: 'description', title: '服务名称', width: "35%"}
                    , {field: 'username', t