数据序列化之经验积累（2） -- Datacontract formatter

此文中的序列化类，主要是利用DataContractSerializer 来实现，对于标注了Datacontract的类特别有用。

二进制序列化：

public static class DataContractFormatSerializer

{

public static string SerializeToBase64String<T>(T obj, bool compress)

{

byte[] ret = Serialize<T>(obj, compress);

return Convert.ToBase64String(ret);

}

public static byte[] Serialize<T>(T obj, bool compress)

{

if (obj == null)

{

return null;

}

byte[] info;

using (MemoryStream stream = new MemoryStream())

{

DataContractSerializer serializer = new DataContractSerializer(obj.GetType());

using (XmlDictionaryWriter binaryDictionaryWriter = XmlDictionaryWriter.CreateBinaryWriter(stream))

{

serializer.WriteObject(binaryDictionaryWriter, obj);

binaryDictionaryWriter.Flush();

}

info = stream.ToArray();

if (compress)

{

info = CompressHelper.CompressBytes(info);

}

}

return info;

}

public static T DeserializeFromBase64String<T>(string baseString, bool decompress)

{

if (String.IsNullOrEmpty(baseString))

return default(T);

byte[] buffer = Convert.FromBase64String(baseString);

return Deserialize<T>(buffer, decompress);

}

public static T Deserialize<T>(byte[] info, bool decompress)

{

T ret = default(T);

if (info == null || info.Length <= 0)

{

return ret;

}

if (decompress)

{

info = CompressHelper.DeCompressBytes(info);

}

using (MemoryStream stream = new MemoryStream(info))

{

DataContractSerializer serializer = new DataContractSerializer(typeof(T));

using (XmlDictionaryReader binaryDictionaryReader = XmlDictionaryReader.CreateBinaryReader(stream, XmlDictionaryReaderQuotas.Max))

{

ret = (T)serializer.ReadObject(binaryDictionaryReader);

}

}

return ret;

}

}

xml:

public static class DataContractXmlSerializer

{

public static string Serialize<T>(T obj)

{

if (obj == null)

{

return null;

}

string ret = "";

using (MemoryStream stream = new MemoryStream())

{

DataContractSerializer serializer = new DataContractSerializer(obj.GetType());

using (XmlDictionaryWriter binaryDictionaryWriter = XmlDictionaryWriter.CreateTextWriter(stream, Encoding.UTF8))

{

serializer.WriteObject(binaryDictionaryWriter, obj);

binaryDictionaryWriter.Flush();

}

ret = Encoding.UTF8.GetString(stream.ToArray());

}

return ret;

}

public static T Deserialize<T>(string xml)

{

T ret = default(T);

if (string.IsNullOrEmpty(xml))

{

return ret;

}

using (MemoryStream stream = new MemoryStream())

{

byte[] bytes = Encoding.UTF8.GetBytes(xml);

stream.Write(bytes, 0, bytes.Length);

stream.Position = 0L;

DataContractSerializer serializer = new DataContractSerializer(typeof(T));

using (XmlDictionaryReader binaryDictionaryReader = XmlDictionaryReader.CreateTextReader(stream, XmlDictionaryReaderQuotas.Max))

{

ret = (T)serializer.ReadObject(binaryDictionaryReader);

}

}

return ret;

}

}

经过测试，本文中的序列化类，比Binary Formatter，速度要快，序列化后的结果要小，当然前提是类要用Datacontract标注，否则基本是一样的。