XML序列化与反序列化

public static class XmlHelper
{
private static void XmlSerializeInternal(Stream stream, object o, Encoding encoding)
{
if (o == null)
throw new ArgumentNullException("o");
if (encoding == null)
throw new ArgumentNullException("encoding");

XmlSerializer serializer = new XmlSerializer(o.GetType());

XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
settings.NewLineChars = "
";
settings.Encoding = encoding;
settings.IndentChars = " ";

using (XmlWriter writer = XmlWriter.Create(stream, settings))
{
serializer.Serialize(writer, o);
writer.Close();
}
}

/// <summary>
/// 将一个对象序列化为XML字符串
/// </summary>
/// <param name="o">要序列化的对象</param>
/// <param name="encoding">编码方式</param>
/// <returns>序列化产生的XML字符串</returns>
public static string XmlSerialize(object o, Encoding encoding)
{
using (MemoryStream stream = new MemoryStream())
{
XmlSerializeInternal(stream, o, encoding);

stream.Position = 0;
using (StreamReader reader = new StreamReader(stream, encoding))
{
return reader.ReadToEnd();
}
}
}

/// <summary>
/// 将一个对象按XML序列化的方式写入到一个文件
/// </summary>
/// <param name="o">要序列化的对象</param>
/// <param name="path">保存文件路径</param>
/// <param name="encoding">编码方式</param>
public static void XmlSerializeToFile(object o, string path, Encoding encoding)
{
if (string.IsNullOrEmpty(path))
throw new ArgumentNullException("path");

using (FileStream file = new FileStream(path, FileMode.Create, FileAccess.Write))
{
XmlSerializeInternal(file, o, encoding);
}
}

/// <summary>
/// 从XML字符串中反序列化对象
/// </summary>
/// <typeparam name="T">结果对象类型</typeparam>
/// <param name="s">包含对象的XML字符串</param>
/// <param name="encoding">编码方式</param>
/// <returns>反序列化得到的对象</returns>
public static T XmlDeserialize<T>(string s, Encoding encoding)
{
if (string.IsNullOrEmpty(s))
throw new ArgumentNullException("s");
if (encoding == null)
throw new ArgumentNullException("encoding");

XmlSerializer mySerializer = new XmlSerializer(typeof(T));
using (MemoryStream ms = new MemoryStream(encoding.GetBytes(s)))
{
using (StreamReader sr = new StreamReader(ms, encoding))
{
return (T)mySerializer.Deserialize(sr);
}
}
}

/// <summary>
/// 读入一个文件，并按XML的方式反序列化对象。
/// </summary>
/// <typeparam name="T">结果对象类型</typeparam>
/// <param name="path">文件路径</param>
/// <param name="encoding">编码方式</param>
/// <returns>反序列化得到的对象</returns>
public static T XmlDeserializeFromFile<T>(string path, Encoding encoding)
{
if (string.IsNullOrEmpty(path))
throw new ArgumentNullException("path");
if (encoding == null)
throw new ArgumentNullException("encoding");

string xml = File.ReadAllText(path, encoding);
return XmlDeserialize<T>(xml, encoding);
}
}