C#使用GZipStream压缩与解压字符串

这里是加压其实很简单，就是将传入的byte数组直接用GZipStream写到一个新的内存流里面去

 public static byte[] Compress(byte[] bytes)

        {

            using (MemoryStream ms = new MemoryStream())

            {

                GZipStream Compress = new GZipStream(ms, CompressionMode.Compress);



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



                Compress.Close();



                return ms.ToArray();



            }

        }

 

因为我是用的.ne Framwork 4.0 所以GZipStream有CopyTo这个方法，但是4.0以下就没有这个方法。如果4.0以下只有在用一个BinaryReader

在去读取

public static byte[] Decompress(Byte[] bytes)

{

using (MemoryStream tempMs = new MemoryStream())

{

using (MemoryStream ms = new MemoryStream(bytes))

{

GZipStream Decompress = new GZipStream(ms, CompressionMode.Decompress);



Decompress.CopyTo(tempMs);



Decompress.Close();



return tempMs.ToArray();

}

}

}

 

下面是C#使用GZipStream压缩与解压字符串

using System; 

using System.Text; 

using System.IO; 

using System.IO.Compression; 

using System.Collections.Generic; 



namespace DatabaseUtilLib 

{ 



public class ZipWrapper 

{ 



public static string Compress(string str) 

{ 

//因输入的字符串不是Base64所以转换为Base64,因为HTTP如果不传递Base64则会发生http 400错误 



return Convert.ToBase64String(Compress(Encoding.Default.GetBytes(str))); 

} 



public static string Decompress(string str) 

{ 

return Encoding.Default.GetString(Decompress(Convert.FromBase64String(str))); 

} 



public static byte[] Compress(byte[] bytes) 

{ 

using (MemoryStream ms = new MemoryStream()) 

{ 

GZipStream Compress = new GZipStream(ms, CompressionMode.Compress); 



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



Compress.Close(); 



return ms.ToArray(); 



} 

} 



public static byte[] Decompress(Byte[] bytes) 

{ 

using (MemoryStream tempMs = new MemoryStream()) 

{ 

using (MemoryStream ms = new MemoryStream(bytes)) 

{ 

GZipStream Decompress = new GZipStream(ms, CompressionMode.Decompress); 



Decompress.CopyTo(tempMs); 



Decompress.Close(); 



return tempMs.ToArray(); 

} 

} 

} 

} 

}