xml序列化与反序列化

/// <summary>
        /// 序列化请求数据 格式化字符串，不包含换行字符
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static string Serialize<T>(T t)
        {
            MemoryStream stream = new MemoryStream();
            XmlSerializer xml = new XmlSerializer(t.GetType());
            XmlTextWriter writer = new XmlTextWriter(stream, Encoding.GetEncoding("GBK"));
            writer.Formatting = Formatting.None;
            try
            {
                xml.Serialize(writer, t);
            }
            catch (InvalidOperationException)
            {
                throw new ApplicationException("序列化异常！");
            }
            StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("GBK"));
            stream.Position = 0;
            StringBuilder sb = new StringBuilder();
            string line;
            while ((line = reader.ReadLine()) != null)
            {
                sb.Append(line);
            }
            reader.Close();
            writer.Close();
            return sb.ToString(); ;
        }

/// <summary>
        /// 序列化请求数据 未格式化字符串  包含换行符 

        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="t"></param>
        /// <returns></returns>
        public static string Serialize<T>(T t)
        {
            MemoryStream stream = new MemoryStream();
            XmlSerializer xml = new XmlSerializer(t.GetType());
            //XmlTextWriter writer = new XmlTextWriter(stream, Encoding.GetEncoding("GBK"));
            StreamWriter writer = new StreamWriter(stream, Encoding.GetEncoding("GBK"));
            //writer.Formatting = Formatting.None;
            try
            {
                xml.Serialize(writer, t);
            }
            catch (InvalidOperationException)
            {
                throw new ApplicationException("序列化异常！");
            }
            StreamReader reader = new StreamReader(stream, Encoding.GetEncoding("GBK"));
            //stream.Position = 0;
            //StringBuilder sb = new StringBuilder();
            //string line;
            //while ((line = reader.ReadLine()) != null)
            //{
            //    sb.Append(line);
            //}
            //reader.Close();
            //writer.Close();
            stream.Position = 0;
            string sr = reader.ReadToEnd();
            string head = "xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"";
            string strs = sr.Replace(head, "");
            return strs.ToString(); 
        }

/// <summary>
        /// 反序列化响应内容（反序列化为对象）
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="responseData"></param>
        /// <returns></returns>
        public static T Deserialize<T>(string responseData)
        {
            XmlSerializer xmls = new XmlSerializer(typeof(T));
            StringReader reader;
            T result=default(T);
            try
            {
                reader = new StringReader(responseData);
                result= (T)xmls.Deserialize(reader);
            }
            catch (Exception ex) { }
            return result;
        }