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 = "",
Name = "Trip 0"
},
new Trip()
{
ID = "",
Name = "Trip 1"
},
new Trip()
{
ID = "",
Name = "Trip 2"
},
new Trip()
{
ID = "",
Name = "Trip 3"
}
});
this.People.AddRange(new List<Person>
{
new Person()
{
ID = "",
Name = "Angel",
Trips = new List<Trip>{Trips[], Trips[]}
},
new Person()
{
ID = "",
Name = "Clyde",
Description = "Contrary to popular belief, Lorem Ipsum is not simply random text.",
Trips = new List<Trip>{Trips[], Trips[]}
},
new Person()
{
ID = "",
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）