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  • 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(); 
    } 
    } 
    } 
    } 
    }
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  • 原文地址:https://www.cnblogs.com/ywei221/p/3630918.html
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