不得不说的wepapi 优化

1：在你的ASP.NET Web API中使用GZIP 或 Deflate 。
对于减少响应包的大小和响应速度，压缩是一种简单而有效的方式。
这是一个非常有必要使用的功能，你可以查看更多关于压缩的文章在我的博客 http://blog.developers.ba/asp-net-web-api-gzip-compression-actionfilter/
本人是在dll抽出源代码使用的功能。

原dll code：



1：新建过滤器(面向切面编程aop)

Code：

public class DeflateCompressionAttribute : ActionFilterAttribute
{
public override void OnActionExecuted(HttpActionExecutedContext actContext)
{
var content = actContext.Response.Content;
var bytes = content == null ? null : content.ReadAsByteArrayAsync().Result;
var zlibbedContent = bytes == null ? new byte[0] :
CompressionHelper.DeflateByte(bytes);
actContext.Response.Content = new ByteArrayContent(zlibbedContent);
actContext.Response.Content.Headers.Remove("Content-Type");
actContext.Response.Content.Headers.Add("Content-encoding", "deflate");
actContext.Response.Content.Headers.Add("Content-Type", "application/json");
base.OnActionExecuted(actContext);
}
}

public class CompressionHelper
{
public static byte[] DeflateByte(byte[] str)
{
if (str == null)
{
return null;
}

using (var output = new MemoryStream())
{
using (var compressor = new DeflateStream(output, CompressionMode.Compress, true))
{
compressor.Write(str, 0, str.Length);
}

return output.ToArray();
}
}
}

使用：以特性的方式在想要压缩的webapi方法以[xxx]方式添加。



运行结果：





解压code：

class Program
{
static void Main(string[] args)
{
string sss = HttpGet("http://localhost:16808//api/GPSStatus/GetListHis?i=1&flag=0&pageIndex=1&pageSize=10", true);

}

public static string HttpGet(string url, object par = null, bool IsGZip = false)
{
WebRequest request = null;
WebResponse response = null;
try
{
//创建请求
request = HttpWebRequest.Create(url);
request.Method = "GET";
request.ContentType = "application/json";
request.Credentials = CredentialCache.DefaultCredentials;
request.Timeout = 60000;
response = request.GetResponse();
string result = null;
if (IsGZip)
{
using (var stream = response.GetResponseStream())
{
byte[] bytes = new byte[response.ContentLength];
stream.Read(bytes, 0, bytes.Length);
result = UnJy(bytes);
}
}
else
{
using (StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
result = sr.ReadToEnd();
}
return result;
}
catch (Exception)
{
return null;
}
finally
{
if (response != null) response.Close();
if (request != null) request.Abort();
}
}

/// <summary>
/// 解压
/// </summary>
public static string UnJy(byte[] by)
{
using (MemoryStream stream = new MemoryStream(by))
{
Stream decompressor = new DeflateStream(stream, CompressionMode.Decompress);
return UncompressString(by, decompressor);
}
}

private static string UncompressString(byte[] compressed, Stream decompressor)
{
byte[] buffer = new byte[0x400];
Encoding encoding = Encoding.UTF8;
using (MemoryStream stream = new MemoryStream())
{
using (decompressor)
{
int num;
while ((num = decompressor.Read(buffer, 0, buffer.Length)) != 0)
{
stream.Write(buffer, 0, num);
}
}
stream.Seek(0L, SeekOrigin.Begin);
StreamReader reader = new StreamReader(stream, encoding);
return reader.ReadToEnd();
}
}

public class CompressionHelper
{
public static byte[] DeflateByte(byte[] str)
{
if (str == null)
{
return null;
}

using (var output = new MemoryStream())
{
using (var compressor = new DeflateStream(output, CompressionMode.Compress,true))
{
compressor.Write(str, 0, str.Length);
}

return output.ToArray();
}
}
}
}

当然你也可以使用文章开头的链接直接附加Dll

其他的优化。
http://www.oschina.net/translate/8-ways-improve-asp-net-web-api-performance