WebAPI. Comente o bloco system.data e entityframework (caso existam) no web.config

Transcrição

1 WebAPI Adicionando WebAPI num projeto MVC Comente o bloco system.data e entityframework (caso existam) no web.config <!--<system.data> <DbProviderFactories> <remove invariant="mysql.data.mysqlclient" /> <add name="mysql Data Provider" invariant="mysql.data.mysqlclient" description=".net Framework Data Provider for MySQL" type="mysql.data.mysqlclient.mysqlclientfactory, MySql.Data, Version= , Culture=neutral, PublicKeyToken=c5687fc88969c44d" /> </DbProviderFactories> </system.data> <entityframework codeconfigurationtype="mysql.data.entity.mysqlefconfiguration, MySql.Data.Entity.EF6"> <defaultconnectionfactory type="system.data.entity.infrastructure.sqlconnectionfactory, EntityFramework" /> <providers> <provider invariantname="mysql.data.mysqlclient" type="mysql.data.mysqlclient.mysqlproviderservices, MySql.Data.Entity.EF6" /> </providers> </entityframework>--> Adicione um Controller Clique na pasta Controllers > Add > Controller Selecione WebAPI 2 Controller with actions, using EntityFramework

2 Informações do Controller

3 Descomente o bloco system.data e entityframework no web.config <system.data> <DbProviderFactories> <remove invariant="mysql.data.mysqlclient" /> <add name="mysql Data Provider" invariant="mysql.data.mysqlclient" description=".net Framework Data Provider for MySQL" type="mysql.data.mysqlclient.mysqlclientfactory, MySql.Data, Version= , Culture=neutral, PublicKeyToken=c5687fc88969c44d" /> </DbProviderFactories> </system.data> <entityframework codeconfigurationtype="mysql.data.entity.mysqlefconfiguration, MySql.Data.Entity.EF6"> <defaultconnectionfactory type="system.data.entity.infrastructure.sqlconnectionfactory, EntityFramework" /> <providers> <provider invariantname="mysql.data.mysqlclient" type="mysql.data.mysqlclient.mysqlproviderservices, MySql.Data.Entity.EF6" /> </providers> </entityframework> Verifique se o bloco system.webserver foi adicionado no web.config <system.webserver> <handlers> <remove name="extensionlessurlhandler-integrated-4.0" /> <remove name="optionsverbhandler" /> <remove name="traceverbhandler" /> <add name="extensionlessurlhandler-integrated-4.0" path="*." verb="*" type="system.web.handlers.transferrequesthandler" precondition="integratedmode,runtimeversionv4.0" /> </handlers> </system.webserver> Verifique se nas References foram adicionados: System.Web.Http System.Web.Http.WebHost

4 Verifique o arquivo WebApiConfig.cs dentro da pasta App_Start A linha config.maphttpattributeroutes deve estar comentada. using System; using System.Collections.Generic; using System.Linq; using System.Web.Http; namespace WebSite1 public static class WebApiConfig public static void Register(HttpConfiguration config) //config.maphttpattributeroutes(); config.routes.maphttproute( name: "DefaultApi", routetemplate: "api/controller/id", defaults: new id = RouteParameter.Optional ); Arquivo Global.asax Adicione o namespace using System.Web.Http; Deixe o método ApplicationStart como segue: A linha do WebApiConfig deve ser adicionada antes do RouteConfig. protected void Application_Start() AreaRegistration.RegisterAllAreas(); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); WebApiConfig.Register(GlobalConfiguration.Configuration); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles);

5 Alterando o AutomovelsController Lista public IQueryable<Automovel> GetTransportes() return db.transportes.oftype<automovel>(); GetAutomovel [ResponseType(typeof(Automovel))] public IHttpActionResult GetAutomovel(int id) Automovel automovel = (Automovel) db.transportes.find(id); if (automovel == null) return NotFound(); return Ok(automovel); DeleteAutomovel [ResponseType(typeof(Automovel))] public IHttpActionResult DeleteAutomovel(int id) Automovel automovel = (Automovel) db.transportes.find(id); if (automovel == null) return NotFound(); db.transportes.remove(automovel); db.savechanges(); return Ok(automovel); Execute a aplicação Acesse a URL Devem aparecer os Automovéis em formato XML.

6 Alterando a resposta da API para JSON Abrir o arquivo WebApiConfig.cs e alterá-lo para suportar Json using System; using System.Collections.Generic; using System.Linq; using System.Web.Http; namespace WebSite1 public static class WebApiConfig public static void Register(HttpConfiguration config) //config.maphttpattributeroutes(); config.routes.maphttproute( name: "DefaultApi", routetemplate: "api/controller/id", defaults: new id = RouteParameter.Optional ); config.formatters.remove(config.formatters.xmlformatter); config.formatters.jsonformatter.supportedmediatypes.add(new System.Net.Http.Headers.MediaTypeHeaderValue("application/json")); Execute a aplicação Acesse a URL Devem aparecer os Automovéis em formato JSON.