如何使用ASP.NET Web API OData在Oracle中使用Entity Framework 6.x Code-First方式开发 OData V4 Service
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：
<?xml version="1.0" encoding="utf-8"?>
<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问
http://go.microsoft.com/fwlink/?LinkId=301879
-->
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<!--<section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />-->
</configSections>
<appSettings></appSettings>
<!--<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 xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
<bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-5.2.2.0" newVersion="5.2.2.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<!--<oracle.manageddataaccess.client>
<version number="*">
<dataSources>
<dataSource alias="XE" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=XE))) "/>
<dataSource alias="test" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=test))) " />
</dataSources>
</version>
</oracle.manageddataaccess.client>-->
<entityFramework>
<!--<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"/>-->
<defaultConnectionFactory type="Oracle.ManagedDataAccess.EntityFramework.OracleConnectionFactory,
Oracle.ManagedDataAccess.EntityFramework,
Version=6.121.2.0,
Culture=neutral,
PublicKeyToken=89b483f429c47342" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
<provider invariantName="Oracle.ManagedDataAccess.Client" type="Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices,Oracle.ManagedDataAccess.EntityFramework, Version=6.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
</providers>
</entityFramework>
</configuration>
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/
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