mastering asp net web api

ASP. NET Web API filter creation and execution process (1)Before introducing the HttpActionDescriptor type to generate a filter pipeline, let's first make a basic understanding of some types involved in the pipeline. Overview of basic types FilterInfo filter object encapsulation information (System.

In ASP. NET Web API, partial fields in the object are displayed through Uris. Sometimes we may not want to display all fields in an object. For example, the client sends the following request:Locaohost: 43321/api/groups/1/items? Fields = idLocaohost: 43321/

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.Http.Filters;namespacekingt.web.his.sys{ Public class supportcrossdomainattribute : System.Web.Http.Filters.ActionFilterAttribute { Public Override voidonactionexecuted (Httpactionexecutedcontext actionexecutedcontext) {varResheaders =actionExecutedContext.Response.Headers; if(allowcredentials) {Resheaders.add ("access-control-allow-credentials","true"); } resheaders.add ("Access-control-allow-origin", O

PublicStringUploadFile (){If(Request.Content.IsMimeMultipartContent ()){//Save fileMultipartformdatastreamprovider Provider =New Multipartformdatastreamprovider (HttpContext.Current.Server.MapPath ("/uploaduser/")); string filename ="Not set";ienumerableNull;Task.factory. StartNew (() ={Parts =Request.Content.ReadAsMultipartAsync (provider). result.contents;filename ="Set Success";},Cancellationtoken.none,Taskcreationoptions.longrunning,//Guarantees separate threadTaskscheduler.default). Wait ()

Both of these methods are returned in the form of Httpresponsemessage,Way one: In the form of a stringvar content = new Stringcontent ("{\" filename\ ": \" "+ FileName +" \ "}"); Httpresponsemessage response = new Httpresponsemessage () { Content = content};response. Content.Headers.ContentType = new Mediatypeheadervalue ("Application/json");Way two: By the way the object (here is a dictionary)var fileNames = new dictionaryHttpresponsemessage response = Request.createresponse (Httpstatuscode

If you do not set the Web API to return data formatters, browser access to the interface will be different from the browser and different forms of results, because the default header of IE browser is Application/json, so when using IE browser to access the interface, You always need to download the JSON file. Of course you can also modify the return data form on the server.In the Application_Start () meth

simpler to find this type and then deserialize the instance of this type directly.Looked for, found that the original is Microsoft.AspNet.WebApi.Core in the Httperror:namespacesystem.web.http{[XmlRoot ("Error")] Public Sealed classhttperror:dictionarystring,Object>, IXmlSerializable { PublicHttperror (); PublicHttperror (stringmessage); PublicHttperror (Modelstatedictionary modelstate,BOOLincludeerrordetail); PublicHttperror (Exception Exception,BOOLincludeerrordetail); Public stringExc

need to check the Modeltype property first. if typeof (DateTime)) { = inputformatterresult.success (DateTime.Parse (Val)); } Else { = inputformatterresult.success (int. Parse (Val)); Now apply this input format class. Public void configureservices (iservicecollection services) { = = { o.inputformatters.add (new custinputformatter ());

Environment preparation1. Amazon EC2 Windows Server with Container2. Visual Studio Enterprise (profresianal to install update 3)3.. NET Core 1.0.0–vs Tooling Preview 2. Please click here to install4. Microsoft. NET Core SDK, can download and install to Microsoft Official websiteExperimental stepsFirst, Docker environment preparationAmazon EC2 Windows Server with container has built-in Docker, as follows:Cli

class Compressionhelper {public static byte[] Deflatebyte (byte[] str) {if (str = = null) {return null; } using (Var output = new MemoryStream ()) {using (var compressor = new Ionic.Zlib.DeflateStre AM (output, Ionic.Zlib.CompressionMode.Compress, Ionic.Zlib.CompressionLevel.BestSpe ed)) {Compressor. Write (str, 0, str. Length); } return output. ToArray (); } } }When using the [Deflatecompression] public string Get (int id) {