摘要：
1、 概述ODATA不仅可以作为WebAPI来建立相应的WebAPI控制器，还可以建立ODataControl控制器，并可以通过插件建立第三方ODataClinet类库；调用和使用数据变得容易和可行。
一、概述
ODATA不经可以作为WebAPI建立相应的WEBAPI控制器，还可以建立ODataControl控制器，能够通过插件建立第三方ODataClinet类库；调用和使用数据变得简单可行。
二、建立OData Web API 服务端
1、通过NuGet添加第三方Microsoft.AspNet.OData；
2、建立相应的Model：Person和Trip
using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; namespace MyMVCODataTwo.Models { public class Person { [Key] public String ID { get; set; } [Required] public String Name { get; set; } public String Description { get; set; } public List<Trip> Trips { get; set; } } } using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; namespace MyMVCODataTwo.Models { public class Trip { [Key] public String ID { get; set; } [Required] public String Name { get; set; } } }
3、添加程序集合，代替数据库请求：
using MyMVCODataTwo.Models; using System.Collections.Generic; namespace MyMVCODataTwo.DataSource { public class DemoDataSources { private static DemoDataSources instance = null; public static DemoDataSources Instance { get { if (instance == null) { instance = new DemoDataSources(); } return instance; } } public List<Person> People { get; set; } public List<Trip> Trips { get; set; } private DemoDataSources() { this.Reset(); this.Initialize(); } public void Reset() { this.People = new List<Person>(); this.Trips = new List<Trip>(); } public void Initialize() { this.Trips.AddRange(new List<Trip>() { new Trip() { ID = "0", Name = "Trip 0" }, new Trip() { ID = "1", Name = "Trip 1" }, new Trip() { ID = "2", Name = "Trip 2" }, new Trip() { ID = "3", Name = "Trip 3" } }); this.People.AddRange(new List<Person> { new Person() { ID = "001", Name = "Angel", Trips = new List<Trip>{Trips[0], Trips[1]} }, new Person() { ID = "002", Name = "Clyde", Description = "Contrary to popular belief, Lorem Ipsum is not simply random text.", Trips = new List<Trip>{Trips[2], Trips[3]} }, new Person() { ID = "003", Name = "Elaine", Description = "It has roots in a piece of classical Latin literature from 45 BC, making Lorems over 2000 years old." } }); } } }
4、WebApi配置：
public static class WebApiConfig { public static void Register(HttpConfiguration config) { config.MapODataServiceRoute("odata", null, GetEdmModel(), new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer)); config.EnsureInitialized(); } private static IEdmModel GetEdmModel() { ODataConventionModelBuilder builder = new ODataConventionModelBuilder(); builder.Namespace = "Demos"; builder.ContainerName = "DefaultContainer"; builder.EntitySet<Person>("People"); builder.EntitySet<Trip>("Trips"); var edmModel = builder.GetEdmModel(); return edmModel; } }
参考博客：
http://www.odata.org/blog/how-to-use-web-api-odata-to-build-an-odata-v4-service-without-entity-framework/
三、建立独立的控制台客户端：
1、通过扩展工具管理，下载OData Client Code ；
2、添加控制台引用程序，添加OData Client Item；
修改MetadataDocumentUri 地址： public const string MetadataDocumentUri = "http://localhost:8090";
3、编写应用端代码：
static void Main(string[] args) { // TODO: Replace with your local URI. string serviceUri = "http://localhost:8090/"; var container = new DefaultContainer(new Uri(serviceUri)); foreach (var p in container.People) { Console.WriteLine("{0} {1} {2}", p.ID, p.Name, p.Description); } Console.Read(); }
参看博客：
http://www.cnblogs.com/bluedoctor/p/4384659.html
http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/odata-v4/create-an-odata-v4-client-app
源码下载（包括服务端、客户端、以及OData客户端封装类库）