环境: Visual Studio 2013 + .Net Framework 4.5.2
1.新建项目
2.安装OData，ODP.NET
安装的包：
下面是部分代码：
using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace WebAppOdataEF.Models{ public class AUDIT_TEMPLATE { /// <summary> /// Gets or sets the identifier. /// 自增ID /// </summary> /// <value>The identifier.</value> public decimal ID { get; set; } /// <summary> /// Gets or sets the audit template no. /// 审批模板编码 /// </summary> /// <value>The audit template no.</value> public string AUDITTEMPLATENO { get; set; } /// <summary> /// Gets or sets the name of the audit template. /// 审批模板名称 /// </summary> /// <value>The name of the audit template.</value> public string AUDITTEMPLATENAME { get; set; } /// <summary> /// Gets or sets the bill type no. /// 单据类型 /// </summary> /// <value>The bill type no.</value> public string BILLTYPENO { get; set; } /// <summary> /// Gets or sets the remark. /// 备注 /// </summary> /// <value>The remark.</value> public string REMARK { get; set; } /// <summary> /// Gets or sets the template status. /// 状态1有效 0无效 /// </summary> /// <value>The template status.</value> public decimal TEMPLATESTATUS { get; set; } /// <summary> /// Gets or sets the company no. /// 公司编码 /// </summary> /// <value>The company no.</value> public string COMPANYNO { get; set; } /// <summary> /// Gets or sets the create time. /// 创建时间 /// </summary> /// <value>The create time.</value> public DateTime CREATETIME { get; set; } /// <summary> /// Gets or sets the create user no. /// 创建人 /// </summary> /// <value>The create user no.</value> public string CREATEUSERNO { get; set; } /// <summary> /// Gets or sets the update time. /// 更新时间 /// </summary> /// <value>The update time.</value> public DateTime UPDATETIME { get; set; } /// <summary> /// Gets or sets the update user no. /// 更新人 /// </summary> /// <value>The update user no.</value> public string UPDATEUSERNO { get; set; } }}这个是实体代码，类名称和属性名称要和数据库中的表结构表名和字段名称一样，大小写都一样。
EF Context代码：
using System;using System.Collections.Generic;using System.Data.Entity;using System.Data.Entity.ModelConfiguration.Conventions;using System.Linq;using System.Web;namespace WebAppOdataEF.Models{ public class TemplatesContext : DbContext { static TemplatesContext() { Database.SetInitializer<TestsContext>(null); //Database.SetInitializer(new CreateDatabaseIfNotExists<TestsContext>()); //Database.SetInitializer(new DropCreateDatabaseAlways<TestsContext>()); //Database.SetInitializer(new DropCreateDatabaseIfModelChanges<TestsContext>()); } /// <summary> /// Initializes a new instance of the <see cref="TemplatesContext"/> class. /// </summary> public TemplatesContext() : base("name=SysBasicOracleDbContext") { this.Configuration.LazyLoadingEnabled = false; } /// <summary> /// Gets or sets the templates. /// </summary> /// <value>The templates.</value> public DbSet<AUDIT_TEMPLATE> Templates { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.HasDefaultSchema("TEST"); modelBuilder.Conventions.Remove<OneToManyCascadeDeleteConvention>(); modelBuilder.Conventions.Remove<ManyToManyCascadeDeleteConvention>(); modelBuilder.Conventions.Remove<PluralizingTableNameConvention>(); } }} 这里是你的用户，
"TEST" 一定要大写
modelBuilder.HasDefaultSchema("TEST");
Controller部分代码：using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Net.Http;using System.Web.Http;using System.Web.OData;using WebAppOdataEF.Models;namespace WebAppOdataEF.Controllers{ public class TemplatesController : ODataController { TemplatesContext db = new TemplatesContext(); private bool TestExists(int key) { return db.Templates.Any(p => p.ID == key); } protected override void Dispose(bool disposing) { db.Dispose(); base.Dispose(disposing); } [EnableQuery] public IHttpActionResult Get() { return Ok(db.Templates); } [EnableQuery] public SingleResult<AUDIT_TEMPLATE> Get([FromODataUri] int key) { IQueryable<AUDIT_TEMPLATE> result = db.Templates.Where(p => p.ID == key); return SingleResult.Create(result); } }}
using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Net.Http;using System.Web.Http;using WebAppOdataEF.Models;using System.Data.Entity;using System.Data.Entity.Infrastructure;using System.Threading.Tasks;using System.Web.OData;namespace WebAppOdataEF.Controllers{ public class TestsController : ODataController { TestsContext db = new TestsContext(); private bool TestExists(int key) { return db.Tests.Any(p => p.ID == key); } protected override void Dispose(bool disposing) { db.Dispose(); base.Dispose(disposing); } [EnableQuery] public IHttpActionResult Get() { return Ok(db.Tests); } [EnableQuery] public SingleResult<TESTS> Get([FromODataUri] int key) { IQueryable<TESTS> result = db.Tests.Where(p => p.ID == key); return SingleResult.Create(result); } public async Task<IHttpActionResult> Post(TESTS product) { if (!ModelState.IsValid) { return BadRequest(ModelState); } db.Tests.Add(product); await db.SaveChangesAsync(); return Created(product); } public async Task<IHttpActionResult> Patch([FromODataUri] int key, Delta<TESTS> product) { if (!ModelState.IsValid) { return BadRequest(ModelState); } var entity = await db.Tests.FindAsync(key); if (entity == null) { return NotFound(); } product.Patch(entity); try { await db.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!TestExists(key)) { return NotFound(); } else { throw; } } return Updated(entity); } public async Task<IHttpActionResult> Put([FromODataUri] int key, TESTS update) { if (!ModelState.IsValid) { return BadRequest(ModelState); } if (key != update.ID) { return BadRequest(); } db.Entry(update).State = EntityState.Modified; try { await db.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!TestExists(key)) { return NotFound(); } else { throw; } } return Updated(update); } public async Task<IHttpActionResult> Delete([FromODataUri] int key) { var product = await db.Tests.FindAsync(key); if (product == null) { return NotFound(); } db.Tests.Remove(product); await db.SaveChangesAsync(); return StatusCode(HttpStatusCode.NoContent); } }} WebApiConfig代码：
using System;using System.Collections.Generic;using System.Linq;using System.Web.Http;using WebAppOdataEF.Models;using System.Web.OData.Builder;using System.Web.OData.Extensions;namespace WebAppOdataEF{ public static class WebApiConfig { public static void Register(HttpConfiguration config) { // Web API 配置和服务 ODataModelBuilder builder = new ODataConventionModelBuilder(); builder.EntitySet<TESTS>("Tests"); builder.EntitySet<TB_MENU>("TbMenus"); builder.EntitySet<AUDIT_TEMPLATE>("Templates"); config.MapODataServiceRoute( routeName: "ODataRoute", routePrefix: null, model: builder.GetEdmModel()); // Web API 路由 //config.MapHttpAttributeRoutes(); //config.Routes.MapHttpRoute( // name: "DefaultApi", // routeTemplate: "api/{controller}/{id}", // defaults: new { id = RouteParameter.Optional } //); } }} WebApiApplication代码：
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Http;using System.Web.Routing;namespace WebAppOdataEF{ public class WebApiApplication : System.Web.HttpApplication { protected void Application_Start() { GlobalConfiguration.Configure(WebApiConfig.Register); } }} WebConfig文件：
<?<!--<connectionStrings>
<add name="TestsContext" providerName="Oracle.ManagedDataAccess.Client"
connectionString="User Id=system;Password=111111;Data Source=XE"/>
<add name="SysBasicOracleDbContext" providerName="Oracle.ManagedDataAccess.Client" connectionString="User Id=test;Password=test;Data Source=test" />
</connectionStrings>-->
<connectionStrings>
<add name="SysBasicOracleDbContext" connectionString="Data Source= (DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = test) ) );User ID=test;Password=test;Persist Security Info=True" providerName="Oracle.ManagedDataAccess.Client" /> </connectionStrings> <system.web> <compilation debug="true" targetFramework="4.5" /> <httpRuntime targetFramework="4.5" /> </system.web> <system.data> <DbProviderFactories> <remove invariant="Oracle.ManagedDataAccess.Client" /> <add name="ODP.NET, Managed Driver" invariant="Oracle.ManagedDataAccess.Client" description="Oracle Data Provider for .NET, Managed Driver" type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" /> </DbProviderFactories></system.data> <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> <runtime> <assemblyBinding
运行结果：
http://localhost:54577/Templates
http://localhost:54577/Templates(7)
http://localhost:54577/Templates?$count=true
http://localhost:54577/Templates?$count=true&$select=ID,REMARK
http://localhost:54577/Templates?$count=true&$select=ID,REMARK&$top=2&$skip=1
http://localhost:54577/Templates?$count=true&$select=ID,REMARK&$top=2&$skip=1&$orderby=ID%20desc
http://localhost:54577/Templates?$count=true&$filter=AUDITTEMPLATENO%20eq%20%27t5%27
请参考Odata.org官网：
基础操作：
http://www.odata.org/getting-started/basic-tutorial/#filter
高级操作：
http://www.odata.org/getting-started/advanced-tutorial/
Github地址:
http://odata.github.io/
https://github.com/OData/RESTier
参考文章：
二篇教程(英文版):
1.Using NuGet to Install and Configure Oracle Data Provider for .NET
2.Entity Framework Code First and Code First Migrations for Oracle Database
http://www.cnblogs.com/yjmyzz/p/how-to-use-code-first-in-oracle-with-entity-framework-6.html
http://www.cnblogs.com/shanyou/archive/2010/02/19/1669360.html
http://www.asp.net/web-api/overview/odata-support-in-aspnet-web-api/odata-v4/create-an-odata-v4-endpoint
http://www.odata.org/blog/how-to-use-web-api-odata-to-build-an-odata-v4-service-without-entity-framework/
原标题：如何使用ASP.NET Web API OData在Oracle中使用Entity Framework 6.x Code
关键词：ASP.NET
我知道了 