获取@At注释的方法返回值无法获取

>>04:40:54:变量未定义(VAR_NOT_DEFINED):obj 位于114行 资源:productlist.html
111|            <button class="btn" id="start">首页</button>
112|            <button class="btn" id="startPage">上一页</button>
113|
114|            <a>${obj.pager.pageNumber}</a>
115|
116|            <button class="btn" id="endPage">上一页</button>
117|            <button class="btn" id="end">尾页</button>

@At("/product/list")
    @POST

    public Object query(@Param("..")ProductBean productBean, @Param("..")Pager pager) {
        return  productService.query(productBean,pager);
    }

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
    <script type="text/javascript">
        $(function () {
            f();
            $("#user_query_btn").click(function () {
                alert("1111111111111")
                f();
            })


        })

        function f() {
            var data = $("#user_query_form").serialize();
            $.ajax({
                url: "/product/list/",
                type: "post",
                data: data,
                dataType: "json",
                success: function (data) {
                    var list_html = "<tr> <td>"

                        + "产品编号</td>"
                        + "</td> <td>"

                        + "产品名称</td>"
                        + "<td>"

                        + "产品价格</td>"
                        + "<td>"

                        + "产品规格</td>"
                        + "<td>"

                        + "产品图片</td>"
                        + "<td>"

                        + "产品排序</td>"
                        + "<td>"

                        + "产品状态</td>"
                        + "<td>"

                        + "上架时间</td>"
                        + "</tr>";
                        +"<td>"

                        + "操作</td>"
                        + "</tr>";
                    console.log(data.list);
                    for (var i = 0; i < data.list.length; i++) {
                        var product = data.list[i];
                        console.log(product);
                        var tmp = "<tr> <td>"
                            + product.product_barcode
                            + "</td>"
                            + "</td> <td>"
                            + product.product_name
                            + "</td>"
                            + "<td>"
                            + product.product_price
                            + "</td>"
                            + "<td>"
                            + product.product_standard
                            + "</td>"
                            + "<td>"
                            + product.product_image
                            + "</td>"
                            + "<td>"
                            + product.product_sort
                            + "</td>"
                            + "<td>"
                            + product.product_status
                            + "</td>"
                            + "<td>"
                            + product.create_time
                            + "</td>"
                            + "</tr>";
                            "<td>修改"
                            +"<a href='/product/update?product_id="+product.product_id+"'></a>"
                            + "</td>"
                            + "</tr>";


                        list_html += tmp;
                    }
                    $("#product_list").html(list_html);
                }
            });
        }


    </script>
</head>
<body>
<div>
    <form action="#" id="user_query_form">
        产品名称<input type="text" name="product_name">
        产品排序<input type="text" name="product_sort">
        创建时间<input type="text" name="create_time">

        <input type="hidden" name="pageNumber" value="1">
        <input type="hidden" name="pageSize" value="10">
        <button id="user_query_btn">查询</button>
        <div>
            <button class="btn" id="start">首页</button>
            <button class="btn" id="startPage">上一页</button>

            <a>${obj.pager.pageNumber}</a>

            <button class="btn" id="endPage">上一页</button>
            <button class="btn" id="end">尾页</button>
        </div>

    </form>

    <table id="product_list">

    </table>



</div>


</body>
</html>