让隐藏的和显示的数据都进行导出

 <div style="border: 1px solid black"> <div class="c" >&nbsp;&nbsp;资产管理信息</div>
            <div style="width: 94%;margin-left: 40px;">
        <table id="demo" lay-filter="demo" style="margin-top: 20px">
            <button type="submit" class="layui-btn layui-btn-primary" id="aaa"  lay-submit lay-filter="data-search-btn"><i class="layui-icon"></i> 搜 索</button>

        </table>
            </div>
        </div>


    </div>
</div>

<script th:src="@{/layui-v2.5.5/layui.js}" charset="utf-8"></script>
<script>
    layui.use(['form', 'table'], function () {
        var $ = layui.jquery,
            form = layui.form,
            layer=layui.layer,
            table = layui.table;//获取当前页面所有的table

        var columns = [
            {field: 'zdid', title: '工单编号', style:'width:10%',hide:true},

            {field:'zd_state',title:'使用归属组',  style:'width:10%', templet:function (c) {
                    return c.zd_state.access_network},  },

        ];


        //渲染表格
           table.render({
            elem: '#demo',//指定table的id
            url: '/zd/ceshicha',

            done:function(res, curr ,count){
              toolbar:'#toolbarDemo',
                $('th').css(({ 'text-align':'center','background-color': '#bdccea', 'color': 'black', 'font-weight': '500' }))
                $('layui-table-total.layui-table tbody tr').css({ 'color': 'red' });
                $('.layui-table-total.layui-table tbody tr').css({ 'background-color': '#ffffb4' });
                var that = this.elem.next(); res.data.forEach(function (item, index) {
                    //console.log(item.empName);item表示每列显示的数据
                    if (index % 2 == 0) {
                        var tr = that.find(".layui-table-box tbody tr[data-index='" + index + "']")
                            .css(({'border-top':'1px solid black','border-bottom':'dashed','border-left':'1px','text-align':'center'}));
                    } else {
                        var tr = that.find(".layui-table-box tbody tr[data-index='" + index + "']")
                            .css(({'border-top':'1px solid red','border-bottom':'dashed','text-align':'center'}));
                    }
                });
            },
            defaultToolbar: ['filter', 'exports', 'print', {
                title: '提示',
                layEvent: 'LAYTABLE_TIPS',
                icon: 'layui-icon-tips'
            }],
            method: "post",
            cols: [columns],
            limits: [10, 15, 20, 25, 50, 100],
            limit: 15,
            page: true,
            skin: 'line'
        });


        //点击监听
        table.on('row(demo)', function (obj) {
            //获取的zdid
            alert(JSON.stringify(obj.data.zdid));
            //跳转的时候如何拿到获取的值
            layer.open({
                type:2,
                shadeClose: true,
                shade: false,
                maxmin:true,
                area:['100%','100%'],
                content: 'http://localhost:8887/zd/xiangxi/'+obj.data.zdid

            });

        })

        // 监听搜索操作
        form.on('submit(data-search-btn)', function (data) {
            //执行搜索重载
            table.reload('demo', {
                page: {
                    curr: 1
                },
                where: data.field
            }, 'data');

            return false;
        });



        table.on('tool(currentTableFilter)', function (obj) {
            var data = obj.data;
            if (obj.event === 'exit') {
                layer.open({
                    type: 2
                    ,title: false //不显示标题栏
                    ,closeBtn: false
                    ,area: ['900px','600px']
                    ,shade: 0.8
                    ,id: 'LAY_layuipro' //设定一个id，防止重复弹出
                    ,btn: ['取消']
                    ,btnAlign: 'c'
                    ,moveType: 1 //拖拽模式，0或者1
                    ,content: '/letter/toLetterList?lNumber='+data.lNumber
                    ,success: function(layero,index){
                    }
                });
            }
        });

    });
</script>

导出全部表格数据么？

后端直接返回一个文件链接，前端用打开的方式直接下载就不用处理了