Question

我一直在尝试在WCF中实现事务流程。当我执行我的客户端代码时，我可以看到事务正在从客户端传播到服务，因为我看到记录在db中被锁定（我在SQL服务器中使用（nolock）来查看事务是否正在发生）。但是我的客户端代码成功完成，但事务被回滚，我在这里错过了什么，

以下是代码段，

服务类

[ServiceBehavior( TransactionIsolationLevel = System.Transactions.IsolationLevel.ReadCommitted,  TransactionTimeout = "00:00:30")]
public class TransactionTest : ITransactionTest
{
[OperationBehavior(TransactionScopeRequired = true, TransactionAutoComplete = false)]
public void DoWork(string aliasName)
{    
    string constr = "Data Source=MyDBServer;User ID=DBUser;password=123;Initial Catalog=MyTestDB;";
    using (SqlConnection objcon = new SqlConnection(constr))
    {
        string qry = @"UPDATE Customer SET Alias = '" + aliasName + "' WHERE CustomerID = 10";
        SqlCommand cmd = new SqlCommand(qry, objcon);
        objcon.Open();
        cmd.ExecuteNonQuery();
    }
}

}

 Service Contract:

 [ServiceContract(SessionMode = SessionMode.Required)]
 public interface ITransactionTest
 {
    [OperationContract, TransactionFlow(TransactionFlowOption.Allowed)]    
void DoWork(string aliasName);
 }

以下是我的Web.config

<bindings>
  <wsHttpBinding>
    <binding name="wsHttpBinding_ITransactionTest" transactionFlow="true"/>
  </wsHttpBinding>
</bindings>

我在客户端应用程序（控制台应用程序）中添加了服务引用

class Program
{
    static void Main(string[] args)
    {

        //updateCustomeAlias();
        try
        {
            using (TransactionScope TranScope = new TransactionScope(TransactionScopeOption.RequiresNew))
            {
                var proxy = new TransactionTestClient("WSHttpBinding_ITransactionTest");
                proxy.DoWork("XYZ");
                TranScope.Complete();
            }
        }
        catch 
        { 
            //Exception handling.
        }
    }

客户端应用程序配置

 <system.serviceModel>
<bindings>
  <wsHttpBinding>
    <binding name="WSHttpBinding_ITransactionTest" closeTimeout="00:01:00"
      openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
      bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
      maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text"
      textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false">
      <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
        maxBytesPerRead="4096" maxNameTableCharCount="16384" />
      <reliableSession ordered="true" inactivityTimeout="00:10:00"
        enabled="false" />
      <security mode="Message">
        <transport clientCredentialType="Windows" proxyCredentialType="None"
          realm="" />
        <message clientCredentialType="Windows" negotiateServiceCredential="true"
          algorithmSuite="Default" />
      </security>
    </binding>
  </wsHttpBinding>
</bindings>
<client>
  <endpoint address="http://localhost:91/TransactionTest.svc" binding="wsHttpBinding"
    bindingConfiguration="WSHttpBinding_ITransactionTest" contract="TransactionTestService.ITransactionTest"          
    name="WSHttpBinding_ITransactionTest">        
  </endpoint>
</client>
 </system.serviceModel>

Answer 1

在服务端，您有[OperationBehavior(TransactionAutoComplete = false)]，这意味着服务必须明确投票提交或回滚将发生。你有两个选择。在服务方面：

将行为更改为TransactionAutoComplete = true，除非有异常，否则会自动投票以提交交易。
在服务方法TransactionScope(TransactionScopeOption.Required)中将获取您可以调用Complete()的环境事务范围。

WCF事务流程未成功提交

1 个答案: