ajax 传递的数据含有< 会失败，如何处理？

configurationString="<forum"   失败
configurationString = "frorm";   成功                $.ajax({
                    type: "POST",
                    url: "Ajax.aspx",
                    data: "deliveryData=" + encodeURIComponent(configurationString)  ,
                    success: function (html)
                    {
                        alert('save successfully!');
                    }
                });