使用WCF数据服务EF,无法保存更改()

时间:2016-07-05 06:21:30

标签: odata wcf-data-services dataservice wcf-data-services-client

我正在使用WCF数据服务,如下所示:

 DataMan.ContextWrapper context = new DataMan.ContextWrapper(new Uri("http://localhost:2060/PCM/DataMan.svc/rest/"));
            DataMan.Report newReport = DataMan.Report.CreateReport("123123123123", DateTime.Now, "999.199905171156550187000.25");

            newReport.Title = "tt";
            newReport.StudyAcDate = Convert.ToDateTime("2016-05-04 12:09:00");
            newReport.Body = "asdasd";
            newReport.Auther = "ali.h";
            newReport.ApproverComment = "cm";
            newReport.Approver = "admin";
            context.AddToReports(newReport);
            DataServiceResponse response = context.SaveChanges();

但在致电SaveChange()后,我收到以下错误:

  
    

服务器在处理请求时遇到错误。异常消息是'操作的传入消息' ProcessRequestForMessage' (合同' IRequestHandler' with namespace' http://tempuri.org/')包含无法识别的http正文格式值' Xml'。预期的正文格式值是' Raw'。这可能是因为尚未在绑定上配置WebContentTypeMapper。有关更多详细信息,请参阅WebContentTypeMapper的文档。'。有关详细信息,请参阅服务器日志。

  

我的WCF数据服务如下:

 public class ContextWrapper : DataAccessDbContext
{
    public ContextWrapper() : base("connection string")
    {

    }
}

[JSONPSupportBehavior]
public class DataMan : EntityFrameworkDataService<ContextWrapper>
{
    public static void InitializeService(DataServiceConfiguration config)
    {
        config.SetEntitySetAccessRule("*", EntitySetRights.All);
        config.SetEntitySetAccessRule("Studies", EntitySetRights.None);
        config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);
        config.UseVerboseErrors = true; // TODO - Remove for production?
        config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V3;
    }
    protected override void HandleException(HandleExceptionArgs args)
    {
        base.HandleException(args);
    }
}

我还实施并配置WebContentTypeMapper以绕过上面提到的错误,如下所示:

 public class ContentTypeMapper : WebContentTypeMapper
{
    public override WebContentFormat GetMessageFormatForContentType(string contentType)
    {
        return WebContentFormat.Raw;
    }
} 

自定义绑定:

   <binding name="XmlMapper">
      <webMessageEncoding webContentTypeMapperType="MARCO.SOA.PCMServiceLib.ContentTypeMapper,MARCO.SOA.PCMServiceLib.Core"/>
      <httpTransport manualAddressing="true"/>
    </binding>
  </customBinding>

服务终端:

 <service behaviorConfiguration="Commom2.Behavior" name="MARCO.SOA.PCMServiceLib.DataMan">
    <endpoint address="rest" behaviorConfiguration="Rest.Behavior" binding="webHttpBinding" 
              bindingConfiguration="XmlMapper" contract="System.Data.Services.IRequestHandler">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
    <host>
      <baseAddresses>
        <add baseAddress="http://localhost:2060/PCM/DataMan.svc"/>
      </baseAddresses>
    </host>
  </service>

但它仍然有异常,我认为我的配置出了问题。

任何帮助都会得到真正的赞赏。

提前致谢。

1 个答案:

答案 0 :(得分:0)

好吧,经过多次麻烦我终于解决了这个问题,  所以我们需要为factory

启动serviceActivation属性

所以我的相对地址是:

<serviceHostingEnvironment>
  <serviceActivations>
.
.
.
   <add relativeAddress="DataMan.svc" service="MARCO.SOA.PCMServiceLib.DataMan"/>
.
.
.
  </serviceActivations>
</serviceHostingEnvironment>

我已将其更改为

<serviceHostingEnvironment>
  <serviceActivations>
.
.
.
    <add relativeAddress="DataMan.svc" service="MARCO.SOA.PCMServiceLib.DataMan" factory="System.Data.Services.DataServiceHostFactory, Microsoft.Data.Services, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
.
.
.
  </serviceActivations>
</serviceHostingEnvironment>

现在一切都很好。

有关DataServiceHostFactory

的更多信息

注意: 这样我们就不需要覆盖GetMessageFormatForContentType的{​​{1}}并强制它返回WebContentTypeMapper或其他内容格式,并且在配置文件中不需要任何WebContentFormat.Raw。< / p>

感谢所有人。