WebApi Gzip (Deflate) Compress request data

Because the specified database cannot be accessed directly, Oracle data can only be queried through a springboard machine, so a data transfer interface is

Query data will be compressed, so look for information, code as follows, which should pay attention to is Response.Headers.Remove ("content-encoding");

This paragraph, the operation of the Response.headrs if IIS6 is not supported,

The following error will appear:

Interface error: "This operation requires the use of IIS integrated pipeline mode. " ()
System.platformnotsupportedexception: This operation requires the use of IIS integrated pipeline mode

In fact, in onactionexecuting this method, the request content-encoding is empty, can not operate,

Add the following class to the project;

Then the data can be compressed by adding corresponding data to the Contoller method.

//<summary>    ///automatically identifies whether the client supports compression and returns the compressed data if supported///Attribute that can is added to controller methods to force content///To be GZIP encoded if the client supports it/// </summary>     Public classCompresscontentattribute:actionfilterattribute {/// <summary>        ///Override to compress the content (generated by)///An action method. /// </summary>        /// <param name= "Filtercontext" ></param>         Public Override voidonactionexecuting (Httpactioncontext filtercontext) {gzipencodepage (); }        /// <summary>        ///determines if GZIP is supported/// </summary>        /// <returns></returns>         Public Static BOOLisgzipsupported () {stringacceptencoding = httpcontext.current.request.headers["accept-encoding"]; if(!string. IsNullOrEmpty (acceptencoding) &&(Acceptencoding.contains ("gzip") || Acceptencoding.contains ("deflate")))                return true; return false; }        /// <summary>        ///Sets up the current page or handler to use GZip through a response.filter///IMPORTANT:///You have the to call this method before any output is generated! /// </summary>         Public Static voidGzipencodepage () {HttpResponse Response=HttpContext.Current.Response; if(isgzipsupported ()) {stringacceptencoding = httpcontext.current.request.headers["accept-encoding"]; if(Acceptencoding.contains ("deflate") ) {Response.filter=NewSystem.IO.Compression.DeflateStream (Response.filter, System.IO.Compress Ion.                    compressionmode.compress); #regionII6 does not support this method, (in fact this value defaults to null and does not need to be removed)//Response.Headers.Remove ("content-encoding");                    #endregionResponse.appendheader ("content-encoding","deflate"); }                Else{Response.filter=NewSystem.IO.Compression.GZipStream (Response.filter, System.IO.Compressi On.                    compressionmode.compress); #regionII6 does not support this method, (in fact this value defaults to null and does not need to be removed)//Response.Headers.Remove ("content-encoding");                    #endregionResponse.appendheader ("content-encoding","gzip"); }            }            //Allow proxy servers to cache encoded and unencoded versions separatelyResponse.appendheader ("Vary","content-encoding"); }    }    /// <summary>    ///Force Defalte Compression///Content-encoding:gzip,content-type:application/json///deflate is a non-patented compression algorithm, it can achieve lossless data compression, there are many open-source implementation algorithms. /// </summary>     Public classDeflatecompressionattribute:actionfilterattribute { Public Override voidonactionexecuting (Httpactioncontext filtercontext) {HttpResponse Response=HttpContext.Current.Response; Response.filter=NewSystem.IO.Compression.DeflateStream (Response.filter, System.IO.Compressi On.            compressionmode.compress); #regionII6 does not support this method, (in fact this value defaults to null and does not need to be removed)//Response.Headers.Remove ("content-encoding");            #endregionResponse.appendheader ("content-encoding","deflate"); }        //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]://APP.        Core.Utility.ZHelper.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); //}    }    /// <summary>    ///forced gzip compression, Application/json///Content-encoding:gzip,content-type:application/json///gzip is another compression library that uses deflate to compress data/// </summary>     Public classGzipcompressionattribute:actionfilterattribute { Public Override voidonactionexecuting (Httpactioncontext filtercontext) {HttpResponse Response=HttpContext.Current.Response; Response.filter=NewSystem.IO.Compression.GZipStream (Response.filter, System.IO.Compression.            compressionmode.compress); #regionII6 does not support this method, (in fact this value defaults to null and does not need to be removed)//Response.Headers.Remove ("content-encoding");            #endregionResponse.appendheader ("content-encoding","gzip"); }        //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]://APP.        Core.Utility.ZHelper.GZipByte (bytes); //actContext.Response.Content = new Bytearraycontent (zlibbedcontent); //actContext.Response.Content.Headers.Remove ("Content-type"); //actContext.Response.Content.Headers.Add ("content-encoding", "gzip"); //actContext.Response.Content.Headers.Add ("Content-type", "Application/json"); //base.        OnActionExecuted (Actcontext); //}}

How to use

[Deflatecompression] Public stringgetdeflate () {return "VALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUESDFASDFASDFASDFASDFWERFWEFCASDFSDAFASDFASDFASDFSADFSA"; } [Compresscontent] Public stringGetgzip () {return "VALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUESDFASDFASDFASDFASDFWERFWEFCASDFSDAFASDFASDFASDFSADFSA"; } [Gzipcompression] Public stringGetraw () {return "VALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUEVALUESDFASDFASDFASDFASDFWERFWEFCASDFSDAFASDFASDFASDFSADFSA"; }

WebApi Gzip (Deflate) Compress request data