从WCF Web服务

Question

我有一个返回JSON数据返回给应用程序（不是ASP.NET Web应用程序）一个WCF Web服务在这里返回*裸* JSON是代码：

[ServiceContract(Namespace = "Navtrak.Services.WCF.MobileAPI")] 
    public interface IJobServiceJSON 
    { 
     [OperationContract] 
     [ServiceKnownType(typeof(Job))] 
     [WebInvoke(
      Method = "GET", 
      BodyStyle = WebMessageBodyStyle.WrappedRequest, 
      ResponseFormat = WebMessageFormat.Json)] 
     PagedResult<Job> ReadJobs(int userId, int? startIndex, int? maxResults, string searchTerm, string sortBy); 
    } 

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] 
    public class JobServiceJSON : IJobServiceJSON 
    { 
     public PagedResult<Job> ReadJobs(int userId, int? startIndex, int? maxResults, string searchTerm, string sortBy) 
     { 
      var service = new JobService(); 
      return service.ReadJobs(userId, startIndex, maxResults, searchTerm, sortBy); 
     } 
    } 

<%@ ServiceHost Language="C#" Debug="true" Service="Navtrak.Services.WCF.MobileAPI.JobServiceJSON" CodeBehind="JobServiceJSON.svc.cs" Factory="System.ServiceModel.Activation.WebScriptServiceHostFactory" %> 

这里是web.config设置：

<services> 
     <service name="JobServiceJSON" behaviorConfiguration="HttpGetMetadata"> 
     <endpoint contract="Navtrak.Services.WCF.MobileAPI.Interfaces.IJobServiceJSON" binding="basicHttpBinding" behaviorConfiguration="AjaxBehavior" /> 
     </service> 
    </services> 

    <behaviors> 
     <serviceBehaviors> 
     <behavior name="HttpGetMetadata"> 
      <serviceMetadata httpGetEnabled="true"/> 
      <serviceDebug includeExceptionDetailInFaults="true"/> 
     </behavior> 
     </serviceBehaviors> 
     <endpointBehaviors> 
     <behavior name="AjaxBehavior"> 
      <!--<enableWebScript />--> 
      <webHttp defaultOutgoingResponseFormat="Json"/> 
     </behavior> 
     </endpointBehaviors> 
    </behaviors> 
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> 
    </system.serviceModel> 

这种方法的问题是，它返回的JSON包裹在一个“d”的对象，这并不可怕，但它也返回了“___type”属性每个对象都带有该类的名称空间。这确实涨大了JSON的大小，因为在这里看到：

{"d":{"__type":"PagedResultOfJobPUkCTgiD:#Navtrak.Business.Schemas.CommonSchemas.Schemas","Results":[{"__type":"Job:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Address":"1011 Granite Ct, Salisbury, MD 21804-8609,","Contact":null,"CreateDate":"\/Date(1313514808000-0400)\/","DstActive":0,"Id":18416,"JobAttributes":[{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":0,"Value":"1011 Granite Ct, Salisbury, MD 21804-8609"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":1,"Value":"1011 Granite Ct, Salisbury, MD 21804-8609,"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":0,"Name":"","Sequence":4,"Value":"2:00p ET"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":5,"Value":"test job!"}],"JobTextForMobileDisplay":null,"Latitude":38352974,"Longitude":-75563528,"Name":"1011 Granite Ct, Salisbury, MD 21804-8609","Notes":"test job!","Phone":null,"PromisedDate":"\/Date(1313604000000-0400)\/","ScheduledDay":"\/Date(1313553600000-0400)\/","ScheduledTimeFrom":0,"ScheduledTimeTo":0,"Status":10,"TimeZoneOffset":0},{"__type":"Job:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Address":", , ,","Contact":null,"CreateDate":"\/Date(1313515111000-0400)\/","DstActive":0,"Id":18419,"JobAttributes":[{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":1,"Value":", , ,"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":0,"Value":"1 test place jul 13"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":0,"Name":"","Sequence":4,"Value":"2:00p ET"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":5,"Value":"test"}],"JobTextForMobileDisplay":null,"Latitude":38774850,"Longitude":-96554630,"Name":"1 test place jul 13","Notes":"test","Phone":null,"PromisedDate":"\/Date(1313604000000-0400)\/","ScheduledDay":"\/Date(1313553600000-0400)\/","ScheduledTimeFrom":0,"ScheduledTimeTo":0,"Status":10,"TimeZoneOffset":0},{"__type":"Job:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Address":"1011 Granite Ct, Salisbury, MD 21804-8609,","Contact":null,"CreateDate":"\/Date(1313515357000-0400)\/","DstActive":0,"Id":18420,"JobAttributes":[{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":0,"Value":"1011 Granite Ct, Salisbury, MD 21804-8609"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":1,"Value":"1011 Granite Ct, Salisbury, MD 21804-8609,"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":0,"Name":"","Sequence":4,"Value":"2:00p ET"},{"__type":"JobAttribute:#Navtrak.Business.Schemas.CommonSchemas.Schemas.Job","Id":0,"JobAttributeId":0,"JobId":0,"MobileDisplay":1,"Name":"","Sequence":5,"Value":"test"}],"JobTextForMobileDisplay":null,"Latitude":38352974,"Longitude":-75563528,"Name":"1011 Granite Ct, Salisbury, MD 21804-8609","Notes":"test","Phone":null,"PromisedDate":"\/Date(1313604000000-0400)\/","ScheduledDay":"\/Date(1313553600000-0400)\/","ScheduledTimeFrom":0,"ScheduledTimeTo":0,"Status":10,"TimeZoneOffset":0}],"TotalRecords":4}} 

我一直在试图返回BARE JSON，但一直没能弄明白。如果我将BodyStyle更改为WebMessageBodyStyle.Bare，那么它会给我一个错误，即除WrappedRequest之外的任何类型都与Web脚本行为不兼容。如果我从svc文件中删除Factory =“System.ServiceModel.Activation.WebScriptServiceHostFactory”，那么如果我尝试从Web浏览器调用json服务/方法，它将返回400错误的请求错误。

另一个与此相关的网站说明，我认为在AjaxBehavior部分中设置“enableWebScript”将与svc文件中的Factory =设置相同，但它没有做任何事情。我必须设置Factory =以便它正确地返回JSON并且不会给出400错误。

那么，关于如何让这个工作的任何建议？这个JSON服务被移动应用程序调用，所以我真的不想返回所有的“___type”属性。

Answer 1

如果您使用WebScriptServiceHostFactory，则根本不需要使用config（并且由于<service>元素中的“name”属性没有名称空间，所以我认为它无论如何都被忽略）。 WebScriptServiceHostFactory旨在与ASP.NET AJAX框架一起使用，而不是一般用法。如果将其替换为WebServiceHostFactory，则应该看到对象的{"d":环绕和__type提示。