ServiceBehaviorAttribute.IncludeExceptionDetailInFaults 属性

参考

定义

命名空间:: System.ServiceModel

程序集:: System.ServiceModel.dll

重要

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获取或设置一个值，该值指定是否要将常规未处理执行异常转换为 FaultException<TDetail> 类型的 ExceptionDetail 并将其作为错误消息发送。仅在开发阶段将其设置为 true 以便对服务进行故障排除。

public:
 property bool IncludeExceptionDetailInFaults { bool get(); void set(bool value); };

public bool IncludeExceptionDetailInFaults { get; set; }

member this.IncludeExceptionDetailInFaults : bool with get, set

Public Property IncludeExceptionDetailInFaults As Boolean

属性值

Boolean

如果未经处理的异常将作为 SOAP 错误返回，则为 true；否则为 false。默认值为 false。

示例

下面的代码示例演示了 ServiceBehaviorAttribute 属性。 BehaviorService 类使用 ServiceBehaviorAttribute 属性以指示：

在 UI 线程上调用实现方法。
每个会话都有一个服务对象。
服务是单线程服务，不支持可重入调用。

而且，在操作级别，OperationBehaviorAttribute 值指示 TxWork 方法将自动登记到流事务中或创建新事务来做这项工作，并指示如果没有发生未经处理的异常，则自动提交此事务。

using System;
using System.ServiceModel;
using System.Transactions;

namespace Microsoft.WCF.Documentation
{
  [ServiceContract(
    Namespace="http://microsoft.wcf.documentation",
    SessionMode=SessionMode.Required
  )]
  public interface IBehaviorService
  {
    [OperationContract]
    string TxWork(string message);
  }

  // Note: To use the TransactionIsolationLevel property, you
  // must add a reference to the System.Transactions.dll assembly.
  /* The following service implementation:
   *   -- Processes messages on one thread at a time
   *   -- Creates one service object per session
   *   -- Releases the service object when the transaction commits
   */
  [ServiceBehavior(
    ConcurrencyMode=ConcurrencyMode.Single,
    InstanceContextMode=InstanceContextMode.PerSession,
    ReleaseServiceInstanceOnTransactionComplete=true
  )]
  public class BehaviorService : IBehaviorService, IDisposable
  {
    Guid myID;

    public BehaviorService()
    {
      myID = Guid.NewGuid();
      Console.WriteLine(
        "Object "
        + myID.ToString()
        + " created.");
    }

    /*
     * The following operation-level behaviors are specified:
     *   -- The executing transaction is committed when
     *        the operation completes without an
     *        unhandled exception
     *   -- Always executes under a flowed transaction.
     */
    [OperationBehavior(
      TransactionAutoComplete = true,
      TransactionScopeRequired = true
    )]
    [TransactionFlow(TransactionFlowOption.Mandatory)]
    public string TxWork(string message)
    {
      // Do some transactable work.
      Console.WriteLine("TxWork called with: " + message);
      // Display transaction information.

      TransactionInformation info = Transaction.Current.TransactionInformation;
      Console.WriteLine("The distributed tx ID: {0}.", info.DistributedIdentifier);
      Console.WriteLine("The tx status: {0}.", info.Status);
      return String.Format("Hello. This was object {0}.",myID.ToString()) ;
    }

    public void Dispose()
    {
      Console.WriteLine(
        "Service "
        + myID.ToString()
        + " is being recycled."
      );
    }
  }
}

Imports System.ServiceModel
Imports System.Transactions

Namespace Microsoft.WCF.Documentation
  <ServiceContract(Namespace:="http://microsoft.wcf.documentation", SessionMode:=SessionMode.Required)> _
  Public Interface IBehaviorService
    <OperationContract> _
    Function TxWork(ByVal message As String) As String
  End Interface

  ' Note: To use the TransactionIsolationLevel property, you 
  ' must add a reference to the System.Transactions.dll assembly.
'   The following service implementation:
'   *   -- Processes messages on one thread at a time
'   *   -- Creates one service object per session
'   *   -- Releases the service object when the transaction commits
'   
    <ServiceBehavior(ConcurrencyMode:=ConcurrencyMode.Single, InstanceContextMode:=InstanceContextMode.PerSession, _
                     ReleaseServiceInstanceOnTransactionComplete:=True)> _
    Public Class BehaviorService
        Implements IBehaviorService, IDisposable
        Private myID As Guid

        Public Sub New()
            myID = Guid.NewGuid()
            Console.WriteLine("Object " & myID.ToString() & " created.")
        End Sub

        '    
        '     * The following operation-level behaviors are specified:
        '     *   -- The executing transaction is committed when
        '     *        the operation completes without an 
        '     *        unhandled exception
        '     *   -- Always executes under a flowed transaction.
        '     
        <OperationBehavior(TransactionAutoComplete:=True, TransactionScopeRequired:=True), TransactionFlow(TransactionFlowOption.Mandatory)> _
        Public Function TxWork(ByVal message As String) As String Implements IBehaviorService.TxWork
            ' Do some transactable work.
            Console.WriteLine("TxWork called with: " & message)
            ' Display transaction information.

            Dim info As TransactionInformation = Transaction.Current.TransactionInformation
            Console.WriteLine("The distributed tx ID: {0}.", info.DistributedIdentifier)
            Console.WriteLine("The tx status: {0}.", info.Status)
            Return String.Format("Hello. This was object {0}.", myID.ToString())
        End Function

        Public Sub Dispose() Implements IDisposable.Dispose
            Console.WriteLine("Service " & myID.ToString() & " is being recycled.")
        End Sub
    End Class
End Namespace

为了正确执行下面的代码示例，基础绑定必须支持流事务。例如，若要使用 WSHttpBinding 支持流事务，请在代码或应用程序配置文件中将 TransactionFlow 属性设置为 true。下面的代码示例演示上述示例的配置文件。

<configuration>
  <system.serviceModel>
    <services>
      <service  
        name="Microsoft.WCF.Documentation.BehaviorService" 
        behaviorConfiguration="metadataAndDebugEnabled"
      >
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8080/SampleService"/>
          </baseAddresses>
        </host>
        <!--
          Note:
            This example code uses the WSHttpBinding to support transactions using the 
            WS-AtomicTransactions (WS-AT) protocol. WSHttpBinding is configured to use the  
            protocol, but the protocol is not enabled on some computers. Use the xws_reg -wsat+ 
            command to enable the WS-AtomicTransactions protocol in the MSDTC service.          
          -->
        <endpoint 
           contract="Microsoft.WCF.Documentation.IBehaviorService"
           binding="wsHttpBinding"
           bindingConfiguration="wsHttpBindingWithTXFlow"
           address="http://localhost:8080/BehaviorService"
          />
        <endpoint 
           contract="Microsoft.WCF.Documentation.IBehaviorService"
           binding="netTcpBinding"
           bindingConfiguration="netTcpBindingWithTXFlow"
           address="net.tcp://localhost:8081/BehaviorService"
          />
        <endpoint
          address="mex"
          binding="mexHttpBinding"
          contract="IMetadataExchange"
        />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metadataAndDebugEnabled">
          <serviceDebug
            includeExceptionDetailInFaults="true"
          />
          <serviceMetadata
            httpGetEnabled="true"
            httpGetUrl=""
          />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <!-- binding configuration - configures a WSHttpBinding to require transaction flow -->
    <bindings>
      <wsHttpBinding>
        <binding name="wsHttpBindingWithTXFlow" transactionFlow="true" />
      </wsHttpBinding>
      <netTcpBinding>
        <binding name="netTcpBindingWithTXFlow" transactionFlow="true" />
      </netTcpBinding>
    </bindings>
  </system.serviceModel>
</configuration>

注解

将 IncludeExceptionDetailInFaults 设置为 true，可以使异常信息流入客户端，以便进行调试。此属性需要支持请求响应或双工消息传递的绑定。

在所有托管应用程序中，处理错误由 Exception 对象表示。在基于 SOAP 的应用程序（如 WCF 应用程序）中，实现服务操作的方法使用 SOAP 错误消息传达错误信息。由于 WCF 应用程序在两种类型的错误系统下执行，因此需要发送到客户端的任何托管异常信息都必须从异常转换为 SOAP 错误。有关详细信息，请参阅在协定和服务中指定和处理错误。

在开发期间，可能需要服务将其他异常发送回客户端，以协助调试。此功能仅用于开发，不应在已部署的服务中使用。

若要方便调试开发，请将 IncludeExceptionDetailInFaults 代码中的设置为 true 或使用应用程序配置文件。

当启用时，服务会自动将较安全的异常信息返回到调用方。这些错误在客户端显示为 FaultException<TDetail> 类型的 ExceptionDetail 对象。

重要

true设置为IncludeExceptionDetailInFaults使客户端能够获取有关内部服务方法异常的信息;建议将其作为暂时调试服务应用程序的方式。此外，以这种方式返回未处理的托管异常的方法的 WSDL 并不包含类型为 FaultException<TDetail> 的 ExceptionDetail 的协定。客户端必须预见到发生未知 SOAP 错误的可能性，以便正确获取调试信息。

将此属性设置为 true 也可以使用应用程序配置文件和 <serviceDebug> 元素来完成，如下面的代码示例所示。

<serviceBehaviors>
  <behavior name="metadataAndDebugEnabled">
    <serviceDebug
      includeExceptionDetailInFaults="true"
    />
    <serviceMetadata
      httpGetEnabled="true"
      httpGetUrl=""
    />
  </behavior>
</serviceBehaviors>

适用于

ServiceBehaviorAttribute.IncludeExceptionDetailInFaults 属性

定义

属性值

示例

注解

适用于

其他资源