利用EF 和WCF 創建一個REST JSON Service. 首先咱們要下載一個Visual Studio 的Template 叫 「ADO.NET C# POCO Entity Generator With WCF Support」.git
這個主要是用於生成WCF的Model Class. 由於默認的EF 的Template是沒有[DataMember]和[DataContract]這個Annotation的。github
創建一個Visual Studio 的project.創建一個Entity framework EDMX。這裏面咱們有一個Table,web
上面已經說過,默認的EF 4.0下生成的template是沒有[DataMember]和[DataContract]這個Annotation的,因此咱們要用新的Template來生成Model class.restful
若是你打開Employee.cs的時候,你會發現class上面是沒有[DataContract],屬性是沒有DataMember的。app
首先,咱們先刪除自動生成的template和Model classide
首先回到EDMX,右鍵Add Code Generation Item…ui
選擇 EF 5.x DbContext Generator with WCF Supportspa
當咱們加完以後,再看咱們的Employee.csdebug
這裏面要說一下,由於JSON不支持序列化IsReference這個屬性,因此若是你要輸出JSON的話,就須要刪除這個IsReference.若是你輸出時xml的話,IsReference是沒問題的。3d
因此咱們要進到template文件,刪除這個IsReference,這個就很簡單了,走一個簡單的查詢就能夠了。注意,在這個template中IsReference有兩處,記得全刪除就能夠了
基本上,Entity Framework上JSON的問題已經完成了,下面就是寫Service了,咱們就寫一個Service,GetEmployee(int employeID)
首先,咱們建立一個EmployeeService.svc,
這裏有一點注意,若是你用UriTemplate = 「employee/{id}」的話,Employee GetEmployee(int id)這裏,就必須是String id,不然的話他會拋異常
好了,最後就是web.config了
webconfig裏面沒有什麼,只要注意加一個endpointBehavior <webHttp />,而後你的service endpoint 裏面behaviorConfiguration = 這個endpointBehavior.
還有就是你的service endpoint的binding type 是 webHttpBinding.
最後記得加mexHttpBinding
所有的web.config在這裏
<?xml version="1.0" encoding="utf-8"?> <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=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> </configSections> <appSettings> <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" /> </appSettings> <system.web> <compilation debug="true" targetFramework="4.5"> <assemblies> <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </assemblies> </compilation> <httpRuntime targetFramework="4.5" /> </system.web> <system.serviceModel> <services> <service name="WcfRestServiceSample.EmployeeService" behaviorConfiguration="serviceBehav"> <endpoint address="" binding="webHttpBinding" bindingConfiguration="" behaviorConfiguration="restfulBehaviour" contract="WcfRestServiceSample.IEmployeeService" /> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <behaviors> <endpointBehaviors> <behavior name="restfulBehaviour"> <webHttp /> </behavior> </endpointBehaviors> <serviceBehaviors> <behavior name="serviceBehav"> <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" /> <serviceDebug includeExceptionDetailInFaults="true" /> </behavior> </serviceBehaviors> </behaviors> <protocolMapping> <add binding="basicHttpsBinding" scheme="https" /> </protocolMapping> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> </system.serviceModel> <system.webServer> <modules runAllManagedModulesForAllRequests="true" /> <!-- To browse web app root directory during debugging, set the value below to true. Set to false before deployment to avoid disclosing web app folder information. --> <directoryBrowse enabled="true" /> </system.webServer> <connectionStrings> <add name="TechsharpSolutionEntities" connectionString="metadata=res://*/MyCompany.csdl|res://*/MyCompany.ssdl|res://*/MyCompany.msl;provider=System.Data.SqlClient;provider connection string="data source=localhost\Sql2008R2;initial catalog=TechsharpSolution;persist security info=True;user id=sa;password=9ijn)OKM;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" /> </connectionStrings> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework"> <parameters> <parameter value="v11.0" /> </parameters> </defaultConnectionFactory> </entityFramework> </configuration>
執行的結果是