Question

我已经阅读了很多解决问题的可能性

＆＃34;服务器未提供有意义的回复;这可能是造成的合同不匹配，过早会话关闭或内部服务器错误＆＃34;

WCF例外，

但他们都没有为我工作。我有一个服务方法，它通过EntityFramework执行linq查询，并且用户可以选择启用或禁用导航属性的加载。这是功能。

public List<DataTransferObjects.Equipment> GetEquipments(bool Include = true)
{
    using (Entities.DBEntities context = new Entities.DBEntities())
    {
        return Include ? (from equipment
                          in context.Equipments
                          .Include(equipment => equipment.A)
                          .Include(equipment => equipment.B)
                          .Include(equipment => equipment.C)
                          .Include(equipment => equipment.D)
                          select equipment)?.ToDataTransferObjects<Entities.Equipment, DataTransferObjects.Equipment>().ToList()
                       :
                         (from equipment
                          in context.Equipments
                          select equipment)?.ToDataTransferObjects<Entities.Equipment, DataTransferObjects.Equipment>().ToList()
    }
}

当我通过生成的服务引用使用false Include值调用该函数时，它可以正常工作，但是当Include为true时，它会抛出异常。我确定问题是消息的大小或一些相关的大小问题，因为如果我更改函数以请求前20条记录它工作正常（整个表包含94条记录），所以工作linq查询

(from equipment
 in context.Equipments
 .Include(equipment => equipment.A)
 .Include(equipment => equipment.B)
 .Include(equipment => equipment.C)
 .Include(equipment => equipment.D)
 select equipment).Take(20)?.ToDataTransferObjects<Entities.Equipment, DataTransferObjects.Equipment>().ToList()

配置如下

<system.serviceModel>
<bindings>
  <netTcpBinding>
    <binding name="DefaultBinding" transferMode="Buffered" maxBufferSize="2147483646" maxBufferPoolSize="2147483646" transactionProtocol="OleTransactions" maxReceivedMessageSize="2147483646">
      <readerQuotas maxDepth="2147483646" maxStringContentLength="2147483646" maxArrayLength="2147483646" maxBytesPerRead="2147483646" maxNameTableCharCount="2147483646" />
      <!--<security mode="Transport"> Nothing changed with this option
        <transport clientCredentialType="Windows" protectionLevel="EncryptAndSign" />
        <message clientCredentialType="Windows"/>
      </security>-->
    </binding>
  </netTcpBinding>
</bindings>
<serviceHostingEnvironment aspNetCompatibilityEnabled="false" multipleSiteBindingsEnabled="true" />
<behaviors>
  <serviceBehaviors>
    <behavior name="DefaultBehaviour">
      <dataContractSerializer maxItemsInObjectGraph="2147483646" />
      <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
      <serviceAuthorization impersonateCallerForAllOperations="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<services>
  <service behaviorConfiguration="DefaultBehaviour" name="ServiceLibrary.Service">
    <endpoint address="WCFService" binding="netTcpBinding" bindingConfiguration="DefaultBinding" contract="ServiceLibrary.IService" />
    <host>
      <baseAddresses>
        <add baseAddress="net.tcp://localhost:8080" />
      </baseAddresses>
    </host>
  </service>
</services>
</system.serviceModel>

Answer 1

以下是一些需要考虑的事项

客户端和服务器都负责为大小等设置配置值，如果您担心此类事情，请确保正确设置客户端配置。 / p>
如果你认为它的大小问题，只限于一个或几个记录，这应该给你一个很好的指示。
我的钱已经开启不是大小设置（MaxReceivedMessageSize错误或类似的东西），更可能是其中一个嵌套合同中的序列化问题。尝试一次实施一个包含
- 尝试找出导致问题的相关合同。它可能只是缺少简单的东西。
- 再一次，尝试从可以使用的东西开始，并在发现问题之前不断增加复杂性

作为奖金提示，这是对三元运营商的完全滥用，看起来很恶心:)只是说......

＆＃34;服务器未提供有意义的回复＆＃34;包含大量邮件内容

1 个答案: