Xml序列化与非序列化的4种方法

以下代码VS2008下编译通过。

/* * 序列化就是把一个对象保存到一个文件或数据库字段中去，反序列化就是在适当的时候把这个文件再转化成原来的对象使用。 * 序列化和反序列化最主要的作用有： * 1、在进程下次启动时读取上次保存的对象的信息  * 2、在不同的AppDomain或进程之间传递数据  * 3、在分布式应用系统中传递数据 *  */using System;using System.IO;using System.Windows.Forms;using System.Runtime.Serialization.Formatters.Binary;using System.Runtime.Serialization.Formatters.Soap;using System.Xml.Serialization;using System.Xml;namespace Serializable用法示例{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        public string filepath = Application.StartupPath + "\\test.dat";        public string filepath2 = Application.StartupPath + "\\test.xml";        private void Form1_Load(object sender, EventArgs e)        {            SerData4();            //string str= SerData5();            //DeSerData5(str);        }        private void button1_Click(object sender, EventArgs e)        {            DeSerData4();        }        /// <summary>        /// BinaryFormatter序列化与反序列化2        /// </summary>        private void SerData2()        {            Person person = new Person();            person.age = 18;            person.name = "Tom";            person.secret = "hello world";            FileStream fs = new FileStream(filepath, FileMode.Create);            BinaryFormatter bf = new BinaryFormatter();            bf.Serialize(fs, person);            fs.Close();            Console.WriteLine("------serialize2 end");        }        private void DeSerData2()        {            Person person = new Person();            FileStream fs = new FileStream(filepath, FileMode.Open);            BinaryFormatter bf = new BinaryFormatter();            //反序列化得到的是一个Object对象，必须做下类型转化            person = (Person)bf.Deserialize(fs);            fs.Close();            //结果为18，Tom，因为secret没有被实例化            Console.WriteLine("------" + person.age + "," + person.name + "," + person.secret);        }        /// <summary>        /// SoapFormatter序列化与反序列化        /// </summary>        private void SerData3()        {            Person person = new Person();            person.age = 18;            person.name = "Tom";            person.secret = "hello world";            FileStream fs = new FileStream(filepath2, FileMode.Create);            SoapFormatter sf = new SoapFormatter();            sf.Serialize(fs, person);            fs.Close();            Console.WriteLine("------serialize3 end");        }        private void DeSerData3()        {            Person person = new Person();            FileStream fs = new FileStream(filepath2, FileMode.Open);            SoapFormatter sf = new SoapFormatter();            //反序列化得到的是一个Object对象，必须做下类型转化            person = (Person)sf.Deserialize(fs);            fs.Close();            //结果为18，Tom，因为secret没有被实例化            Console.WriteLine("------" + person.age + "," + person.name + "," + person.secret);        }        /// <summary>        /// XmlSerializer序列化与反序列化，        /// 也保存为xml文件，无额外信息。只能保存public类型的字段，        /// 而其它两种方法保存所有类型的字段        /// </summary>        private void SerData4()        {            Person person = new Person();            person.age = 18;            person.name = "Tom";            person.secret = "hello world";            FileStream fs = new FileStream(filepath2, FileMode.Create);            XmlSerializer xs = new XmlSerializer(typeof(Person));            xs.Serialize(fs, person);            fs.Close();            Console.WriteLine("------serialize4 end");        }        private void DeSerData4()        {            Person person = new Person();            FileStream fs = new FileStream(filepath2, FileMode.Open);            XmlSerializer xs = new XmlSerializer(typeof(Person));            //反序列化得到的是一个Object对象，必须做下类型转化            person = (Person)xs.Deserialize(fs);            fs.Close();            //结果为18，Tom，因为secret没有被实例化            Console.WriteLine("------" + person.age + "," + person.name + "," + person.secret);        }        /// <summary>        /// 利用XmlTextWriter将Person类与string相互转换        /// </summary>        private string SerData5()        {            Person person = new Person();            person.age = 18;            person.name = "Tom";            person.secret = "hello world";            MemoryStream ms = new MemoryStream();            XmlTextWriter xmlWriter = new XmlTextWriter(ms, System.Text.Encoding.UTF8);            xmlWriter.Indentation = 4;            xmlWriter.Formatting = Formatting.Indented;            XmlSerializer formatter = new XmlSerializer(typeof(Person));            formatter.Serialize(xmlWriter, person);            xmlWriter.Close();            string xmlstring = System.Text.Encoding.UTF8.GetString(ms.ToArray());            Console.WriteLine("{0},{1}",xmlstring.Length,xmlstring);            return xmlstring;        }        private Person DeSerData5(string xmlstring)        {            byte[] buffer = System.Text.Encoding.UTF8.GetBytes(xmlstring);            MemoryStream ms = new MemoryStream(buffer);            XmlTextReader xmlReader = new XmlTextReader(ms);            XmlSerializer formatter = new XmlSerializer(typeof(Person));            Person person = (Person)formatter.Deserialize(xmlReader);            xmlReader.Close();            Console.WriteLine("------" + person.age + "," + person.name + "," + person.secret);            return person;        }            }}

test.xml为：

<?xml version="1.0"?><Person xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">  <age>18</age>  <name>Tom</name>  <secret>hello world</secret></Person>