using System;
using System.Collections.Generic;
using System.IO.Compression;
using System.Text;
using System.Data;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using KCSvrOpr.Encrypt;
using System.Xml;
namespace KCSvrOpr.DataFormat
{
/// <summary>
/// 功 能:对数据的基本操作
/// 添加功能:
/// 描 述:包括数据的压缩，对象与byte[]之间的转换
/// 版 权:HN KC
/// </summary>
public class KCDataFormatter
{
public KCDataFormatter() { }
/// <summary>
/// 将DataSet格式化成字节数组byte[]
/// </summary>
/// <param name="dsOriginal">DataSet对象</param>
/// <returns>字节数组</returns>
public static byte[] GetBinaryFormatData(DataSet dsOriginal)
{
byte[] binaryDataResult = null;
MemoryStream memStream = new MemoryStream();
IFormatter brFormatter = new BinaryFormatter();
dsOriginal.RemotingFormat = SerializationFormat.Binary;
brFormatter.Serialize(memStream, dsOriginal);
binaryDataResult = memStream.ToArray();
memStream.Close();
memStream.Dispose();
return binaryDataResult;
}
/// <summary>
/// 将DataSet格式化成字节数组byte[]，并且已经经过压缩
/// </summary>
/// <param name="dsOriginal">DataSet对象</param>
/// <returns>字节数组</returns>
public static byte[] GetBinaryFormatDataCompress(DataSet dsOriginal)
{
byte[] binaryDataResult = null;
MemoryStream memStream = new MemoryStream();
IFormatter brFormatter = new BinaryFormatter();
dsOriginal.RemotingFormat = SerializationFormat.Binary;
brFormatter.Serialize(memStream, dsOriginal);
binaryDataResult = memStream.ToArray();
memStream.Close();
memStream.Dispose();
return Compress(binaryDataResult);
}
/// <summary>
/// 解压数据
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static byte[] Decompress(byte[] data)
{
byte[] bData;
MemoryStream ms = new MemoryStream();
ms.Write(data, 0, data.Length);
ms.Position = 0;
GZipStream stream = new GZipStream(ms, CompressionMode.Decompress, true);
byte[] buffer = new byte[1024];
MemoryStream temp = new MemoryStream();
int read = stream.Read(buffer, 0, buffer.Length);
while (read > 0)
{
temp.Write(buffer, 0, read);
read = stream.Read(buffer, 0, buffer.Length);
}
//必须把stream流关闭才能返回ms流数据,不然数据会不完整
stream.Close();
stream.Dispose();
ms.Close();
ms.Dispose();
bData = temp.ToArray();
temp.Close();
temp.Dispose();
return bData;
}
/// <summary>
/// 压缩数据
/// </summary>
/// <param name="data"></param>
/// <returns></returns>
public static byte[] Compress(byte[] data)
{
byte[] bData;
MemoryStream ms = new MemoryStream();
GZipStream stream = new GZipStream(ms, CompressionMode.Compress, true);
stream.Write(data, 0, data.Length);
stream.Close();
stream.Dispose();
//必须把stream流关闭才能返回ms流数据,不然数据会不完整
//并且解压缩方法stream.Read(buffer, 0, buffer.Length)时会返回0
bData = ms.ToArray();
ms.Close();
ms.Dispose();
return bData;
}
/// <summary>
/// 将字节数组反序列化成DataSet对象
/// </summary>
/// <param name="binaryData">字节数组</param>
/// <returns>DataSet对象</returns>
public static DataSet RetrieveDataSet(byte[] binaryData)
{
DataSet dsOriginal = null;
MemoryStream memStream = new MemoryStream(binaryData);
IFormatter brFormatter = new BinaryFormatter();
Object obj = brFormatter.Deserialize(memStream);
dsOriginal = (DataSet)obj;
return dsOriginal;
}
/// <summary>
/// 将字节数组反解压后序列化成DataSet对象
/// </summary>
/// <param name="binaryData">字节数组</param>
/// <returns>DataSet对象</returns>
public static DataSet RetrieveDataSetDecompress(byte[] binaryData)
{
DataSet dsOriginal = null;
MemoryStream memStream = new MemoryStream(Decompress(binaryData));
IFormatter brFormatter = new BinaryFormatter();
Object obj = brFormatter.Deserialize(memStream);
dsOriginal = (DataSet)obj;
return dsOriginal;
}
/// <summary>
/// 将object格式化成字节数组byte[]
/// </summary>
/// <param name="dsOriginal">object对象</param>
/// <returns>字节数组</returns>
public static byte[] GetBinaryFormatData(object dsOriginal)
{
byte[] binaryDataResult = null;
MemoryStream memStream = new MemoryStream();
IFormatter brFormatter = new BinaryFormatter();
brFormatter.Serialize(memStream, dsOriginal);
binaryDataResult = memStream.ToArray();
memStream.Close();
memStream.Dispose();
return binaryDataResult;
}
/// <summary>
/// 将objec格式化成字节数组byte[]，并压缩
/// </summary>
/// <param name="dsOriginal">object对象</param>
/// <returns>字节数组</returns>
public static byte[] GetBinaryFormatDataCompress(object dsOriginal)
{
byte[] binaryDataResult = null;
MemoryStream memStream = new MemoryStream();
IFormatter brFormatter = new BinaryFormatter();
brFormatter.Serialize(memStream, dsOriginal);
binaryDataResult = memStream.ToArray();
memStream.Close();
memStream.Dispose();
return Compress(binaryDataResult);
}
/// <summary>
/// 将字节数组反序列化成object对象
/// </summary>
/// <param name="binaryData">字节数组</param>
/// <returns>object对象</returns>
public static object RetrieveObject(byte[] binaryData)
{
MemoryStream memStream = new MemoryStream(binaryData);
IFormatter brFormatter = new BinaryFormatter();
Object obj = brFormatter.Deserialize(memStream);
return obj;
}
/// <summary>
/// 将字节数组解压后反序列化成object对象
/// </summary>
/// <param name="binaryData">字节数组</param>
/// <returns>object对象</returns>
public static object RetrieveObjectDecompress(byte[] binaryData)
{
MemoryStream memStream = new MemoryStream(Decompress(binaryData));
IFormatter brFormatter = new BinaryFormatter();
Object obj = brFormatter.Deserialize(memStream);
return obj;
}
/// <summary>
/// 解密配置文件并读入到xmldoc中
/// </summary>
public static XmlNode DecryptConfigFile(string filePath)
{
FileStream fs = new FileStream(filePath, FileMode.Open);
XmlDocument m_XmlDoc = new XmlDocument();
BinaryFormatter formatter = null;
try
{
formatter = new BinaryFormatter();
// Deserialize the hashtable from the file and
// assign the reference to the local variable.
m_XmlDoc.LoadXml(KCEncrypt.Decrypt((string)formatter.Deserialize(fs)));
return m_XmlDoc.DocumentElement;
}
catch (SerializationException e)
{
Console.WriteLine("Failed to deserialize. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
fs = null;
}
}
/// <summary>
/// 加密密钥后再对文件字符进行加密
/// </summary>
public static void EncryptConfigFile(string filePath, string str)
{
FileStream fs = new FileStream(filePath, FileMode.Create);
BinaryFormatter formatter = new BinaryFormatter();
try
{
formatter.Serialize(fs, KCEncrypt.Encrypt(str));
}
catch (SerializationException e)
{
Console.WriteLine("Failed to serialize. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
fs = null;
}
}
}
}