Question

我有一个WCF Web服务，它将JSON数据返回给应用程序（不是ASP.NET Web应用程序。）以下是代码：

[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>

这种方法的问题在于它返回包含在“d”对象中的JSON，这并不是那么糟糕，但它也为具有类的命名空间的每个对象返回“___type”属性。这真的膨胀了JSON的大小，如下所示：

{"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}}

我一直在尝试返回 BARE JSON，但一直未能弄明白。如果我将BodyStyle更改为WebMessageBodyStyle.Bare，那么它会给我一个错误，除了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。

与此相关的另一个网站说明，我认为在AjaxBehavior部分中设置“enableWebScript”将与svc文件中的Factory =设置相同，但是它没有做任何事情。我必须设置Factory =才能正确返回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？此JSON服务由移动应用程序调用，因此我真的不想返回所有“___type”属性。

Answer 1

如果您正在使用WebScriptServiceHostFactory，则根本不需要使用配置（因为<service>元素中的“name”属性没有命名空间，我认为它无论如何都被忽略了）。 WebScriptServiceHostFactory旨在与ASP.NET AJAX框架一起使用，而不是用于一般用法。如果将其替换为WebServiceHostFactory，则应该看到对象的{"d":包装和__type提示。

从WCF Web服务返回* Bare * JSON

1 个答案: