C#序列化总结

贴一下自己序列化的代码：

 public class XMLUtil
    {
        /// <summary>
        /// XML & Datacontract Serialize & Deserialize Helper
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="serialObject"></param>
        /// <returns></returns>
        public static string Serializer<T>(T serialObject) where T : class
        {
            string result = string.Empty;
            using (MemoryStream mem = new MemoryStream())
            {
                using (XmlTextWriter writer = new XmlTextWriter(mem, Encoding.UTF8))
                {
                    System.Xml.Serialization.XmlSerializer ser = new System.Xml.Serialization.XmlSerializer(typeof(T));
                    ser.Serialize(writer, serialObject);
                    result = Encoding.UTF8.GetString(mem.ToArray());
                }
            }
            return result;
        }

        public static T Deserialize<T>(string str) where T : class
        {
            T result = null;
            using (MemoryStream memoryStream = new MemoryStream(Encoding.UTF8.GetBytes(str)))
            {
                using (StreamReader streamReader = new StreamReader(memoryStream))
                {
                    System.Xml.Serialization.XmlSerializer xmlSerializer = new System.Xml.Serialization.XmlSerializer(typeof(T));
                    result = (T)xmlSerializer.Deserialize(memoryStream);
                }
            }
            return result;
        }
    }

上面的写法持续序列化不会有内存溢出的性能问题，之前一直被告知直接引用公司某位老鸟封装好的dll来序列化，后来发现了老是出现内存溢出，贴一下它的错误写法，仅供吸取教训：

public class XMLUtil
    {
        /// <summary>
        /// XML & Datacontract Serialize & Deserialize Helper
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="serialObject"></param>
        /// <returns></returns>
        public static string Serializer<T>(T serialObject) where T : class
        {
            //try
            //{
            XmlSerializer ser = new XmlSerializer(typeof(T));
            System.IO.MemoryStream mem = new MemoryStream();
            XmlTextWriter writer = new XmlTextWriter(mem, Encoding.UTF8);
            ser.Serialize(writer, serialObject);
            writer.Close();

            return Encoding.UTF8.GetString(mem.ToArray());
            //}
            //catch (Exception ex)
            //{
            //    return null;
            //}
        }

        public static T Deserialize<T>(string str) where T : class
        {
            //try
            //{
            XmlSerializer mySerializer = new XmlSerializer(typeof(T));
            StreamReader mem2 = new StreamReader(
                    new MemoryStream(System.Text.Encoding.UTF8.GetBytes(str)),
                    System.Text.Encoding.UTF8);

            return (T)mySerializer.Deserialize(mem2);
            //}
            //catch (Exception)
            //{
            //    return null;
            //}
        }

        //public static string Json_SerializeObject(object value)
        //{
        //    return Newtonsoft.Json.JsonConvert.SerializeObject(value);
        //}
        //public static object Json_DeserializeObject(string value)
        //{
        //    return Newtonsoft.Json.JsonConvert.DeserializeObject(value);
        //}
        //public static T Json_DeserializeObject<T>(string value)
        //{
        //    return Newtonsoft.Json.JsonConvert.DeserializeObject<T>(value);
        //}
    }

哎，老鸟赶时间的时候写代码都这么随意吗？看到被注释掉的try catch我猜测他曾经也觉得这里有问题，不过还是没发现吧。直接放内存里，流都不释放啊。。。