dojo.xhrGet 无法调用 WCF GET 方法返回具有 WCF 支持的 DbContext 对象

Question

所以这是交易：

我有一个以这种方式定义的方法的操作契约：

[OperationContract]
[WebInvoke(Method = "GET", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]

aspnet_Users GetUsers();

当我在 WCF 测试客户端中测试该方法时，我得到的结果很好，但是当我发送 dojo GET 请求时，我收到错误

504: "[Fiddler] ReadResponse() failed: The server did not return a complete response for this request. Server returned 0 bytes. "

以前类似问题的解决方案都没有帮助解决这个问题。这是 dojo 调用和网络配置：

var request = dojo.xhrGet({
    url: 'http://localhost/Authentication/Service1.svc/GetUsers',
    handleAs: "json",
    contentType: "application/json",
    headers: {
        "Content-Type": "application/json; charset=UTF-8",
        "Access-Control-Allow-Origin": "*"
    },
    load: doSomething,
    error: OnError
});

 <system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="MyAppServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
        <behavior name="web">
          <enableWebScript />
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
        <behavior name="ServiceBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <dataContractSerializer maxItemsInObjectGraph="2147483646" />
          <bufferedReceive maxPendingMessagesPerChannel="2147483646" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <bindings>
      <webHttpBinding>
        <binding name="ServiceBinding" maxReceivedMessageSize="214748364777777" maxBufferSize="2147483647" maxBufferPoolSize="214748364777777" transferMode="Streamed">
          <readerQuotas maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxStringContentLength="2147483647" />
        </binding>
      </webHttpBinding>
    </bindings>
    <services>
      <service name="WcfAuthenticationService.Service1" behaviorConfiguration="ServiceBehavior">
        <endpoint address="" binding="webHttpBinding" contract="WcfAuthenticationService.IService1" behaviorConfiguration="web" bindingConfiguration="ServiceBinding"/>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>
      </service>
    </services>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
    <directoryBrowse enabled="true" />
  </system.webServer>
  <entityFramework>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
    <providers>
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <connectionStrings>
    <add name="Entities" connectionString="data source=serv;initial catalog=aspnetdb;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" />
<add name="aspnetdbEntities" connectionString="metadata=res://*/DataModelFirst.UsersModel.csdl|res://*/DataModelFirst.UsersModel.ssdl|res://*/DataModelFirst.UsersModel.msl;provider=System.Data.SqlClient;provider connection string=&quot;data source=serv;initial catalog=aspnetdb;integrated security=True;multipleactiveresultsets=True;application name=EntityFramework&quot;" providerName="System.Data.EntityClient" />
</connectionStrings>

方法 returns 支持 WCF 的 DbContext 实体。

我有另一种方法 returns 好的结果与 dojo post 方法调用，所以我猜这与 DbContext... 我非常感谢任何帮助。

Answer 1

错误是“'aspnet_Users' 无法序列化为 JSON，因为它的 IsReference 设置是 'True'。JSON 格式不支持引用，因为没有标准化用于表示引用的格式。要启用序列化，请禁用类型或类型的适当父 class 上的 IsReference 设置。“

dojo.xhrGet 无法调用 WCF GET 方法返回具有 WCF 支持的 DbContext 对象

dojo.xhrGet not being able to call WCF GET method returning DbContext object with WCF support

c#

wcf

dojo

entity-framework

dbcontext