c# 压缩与解压

来源：互联网发布：网校程序源码编辑：程序博客网时间：2024/06/02 16:02

<pre class="csharp" name="code">using System;using System.Collections.Generic;using System.Text;using System.IO;using System.IO.Compression;using System.Xml.Serialization;using System.Xml;using System.Data;using System.Runtime.Serialization.Formatters.Binary;using System.Runtime.Serialization;namespace JTK.IOHelper{    public class SerializerDeserialize    {        public static byte [] Serializer(object obj)        {            IFormatter formatter = new BinaryFormatter();//定义BinaryFormatter以序列化object对象              MemoryStream ms = new MemoryStream();//创建内存流对象              formatter.Serialize(ms, obj);//把object对象序列化到内存流              byte[] buffer = ms.ToArray();//把内存流对象写入字节数组              ms.Close();//关闭内存流对象              ms.Dispose();//释放资源              MemoryStream msNew = new MemoryStream();            GZipStream gzipStream = new GZipStream(msNew, CompressionMode.Compress, true);//创建压缩对象              gzipStream.Write(buffer, 0, buffer.Length);//把压缩后的数据写入文件              gzipStream.Close();//关闭压缩流,这里要注意：一定要关闭，要不然解压缩的时候会出现小于4K的文件读取不到数据，大于4K的文件读取不完整                          gzipStream.Dispose();//释放对象              msNew.Close();            msNew.Dispose();            return msNew.ToArray();        }        /// <summary>          /// 反序列化压缩的object          /// </summary>          /// <param name="_filePath"></param>          /// <returns></returns>          public static object Deserialize(byte[] bytes)        {            MemoryStream msNew = new MemoryStream(bytes);            msNew.Position = 0;            GZipStream gzipStream = new GZipStream(msNew, CompressionMode.Decompress);//创建解压对象              byte[] buffer = new byte[4096];//定义数据缓冲              int offset = 0;//定义读取位置              MemoryStream ms = new MemoryStream();//定义内存流              while ((offset = gzipStream.Read(buffer, 0, buffer.Length)) != 0)            {                ms.Write(buffer, 0, offset);//解压后的数据写入内存流              }            BinaryFormatter sfFormatter = new BinaryFormatter();//定义BinaryFormatter以反序列化object对象              ms.Position = 0;//设置内存流的位置              object obj;            try            {                obj = (object)sfFormatter.Deserialize(ms);//反序列化              }            catch            {                throw;            }            finally            {                ms.Close();//关闭内存流                  ms.Dispose();//释放资源              }            gzipStream.Close();//关闭解压缩流              gzipStream.Dispose();//释放资源              msNew.Close();            msNew.Dispose();            return obj;        }      }}

<p>       #region 压缩解压object        public static byte[] CompressionObject(object DataOriginal)        {            if (DataOriginal == null) return null;            BinaryFormatter bFormatter = new BinaryFormatter();            MemoryStream mStream = new MemoryStream();            bFormatter.Serialize(mStream, DataOriginal);            byte[] bytes = mStream.ToArray();            MemoryStream oStream = new MemoryStream();            DeflateStream zipStream = new DeflateStream(oStream, CompressionMode.Compress);            zipStream.Write(bytes, 0, bytes.Length);            zipStream.Flush();            zipStream.Close();            return oStream.ToArray();        }</p><p>        public static object DecompressionObject(byte[] bytes)        {            if (bytes == null) return null;            MemoryStream mStream = new MemoryStream(bytes);            mStream.Seek(0, SeekOrigin.Begin);            DeflateStream unZipStream = new DeflateStream(mStream, CompressionMode.Decompress, true);            object dsResult = null;            BinaryFormatter bFormatter = new BinaryFormatter();            dsResult = (object)bFormatter.Deserialize(unZipStream);            return dsResult;        }        #endregion</p>

0 0