Magicodes.NET/Magicodes.Utility/CompressionUtils.cs at master · magicodes/Magicodes.NET · GitHub

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using System;

using System.Collections.Generic;

using System.IO;

using System.IO.Compression;

using System.Linq;

using System.Text;

using System.Web;

using Magicodes.Utility;

namespace Magicodes.Utility

{

/// <summary>

/// 压缩

/// </summary>

public class CompressionUtils

{

/// <summary>

/// GZip压缩输出

/// </summary>

/// <param name="instance"></param>

public static void GZipAndSend(object instance)

{

CompressionUtils.GZipAndSend((instance != null) ? instance.ToString() : string.Empty);

}

/// <summary>

/// GZip压缩输出

/// </summary>

/// <param name="instance"></param>

public static void GZipAndSend(string instance)

{

CompressionUtils.GZipAndSend(instance, "application/json");

}

/// <summary>

/// GZip压缩输出

/// </summary>

/// <param name="instance"></param>

/// <param name="responseType"></param>

public static void GZipAndSend(string instance, string responseType)

{

CompressionUtils.GZipAndSend(Encoding.UTF8.GetBytes(instance), responseType);

}

/// <summary>

/// GZip压缩输出

/// </summary>

/// <param name="instance"></param>

/// <param name="responseType"></param>

public static void GZipAndSend(byte[] instance, string responseType)

{

CompressionUtils.Send(CompressionUtils.GZip(instance), responseType);

}

/// <summary>

/// 输出内容

/// </summary>

/// <param name="instance"></param>

/// <param name="responseType"></param>

public static void Send(byte[] instance, string responseType)

{

HttpResponse response = HttpContext.Current.Response;

response.AppendHeader("Content-Encoding", "gzip");

response.Charset = "utf-8";

response.ContentType = responseType;

response.BinaryWrite(instance);

}

/// <summary>

/// GZip压缩

/// </summary>

public static byte[] GZip(string instance)

{

return GZip(Encoding.UTF8.GetBytes(instance));

}

/// <summary>

/// GZip压缩

/// </summary>

public static byte[] GZip(byte[] instance)

{

MemoryStream stream = new MemoryStream();

GZipStream zipstream = new GZipStream(stream, CompressionMode.Compress);

zipstream.Write(instance, 0, instance.Length);

zipstream.Close();

return stream.ToArray();

}

/// <summary>

/// 是否支持GZip压缩

/// </summary>

public static bool IsGZipSupported

{

get

{

HttpRequest request = HttpContext.Current.Request;

bool ie6 = request.Browser.IsBrowser("IE") && request.Browser.MajorVersion <= 6;

string encoding = (request.Headers["Accept-Encoding"] ?? string.Empty).ToLowerInvariant();

return !ie6 && encoding.Contains("gzip", "deflate");

}

Magicodes.NET/Magicodes.Utility/CompressionUtils.cs at master · magicodes/Magicodes.NET · GitHub

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