WCF分布式开发常见错误(14):无效的操作异常,At least one operation on the ...

Posted on 2009-05-30 23:41 Frank Xu Lei 阅读(375) 评论(2)  编辑 收藏 网摘 所属分类: WCF分布式开发常见错误



    WCF事务编程过程中，会出现这个操作无效异常。信息如下：

At least one operation on the 'WCFServiceTransaction1' contract is configured with the TransactionFlowAttribute attribute set to Mandatory but the channel's binding 'NetTcpBinding' is not configured with a TransactionFlowBindingElement. The TransactionFlowAttribute attribute set to Mandatory cannot be used without a TransactionFlowBindingElement.

异常界面如图：



[align=left]我是在调试客户端事务模式的时候出现的错误，服务契约和服务类的代码如下：[/align]
[align=left] [/align]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceModel;
using System.Runtime.Serialization;
using System.Transactions;
using System.Diagnostics;
//ServiceContract 属性以及 Indigo 使用的所有其他属性均在 System.ServiceModel 命名空间中定义，
//因此本例开头使用 using 语句来引用该命名空间。

namespace WCFService
{
    //1.服务契约
    [ServiceContract(Namespace = "http://www.cnblogs.com/frank_xl/")]
    public interface IWCFServiceTransaction1
    {
        //操作契约
        [OperationContract]
        //强制事务流，使用客户端事务
        //[TransactionFlow(TransactionFlowAttribute
        [TransactionFlow(TransactionFlowOption.Mandatory)]
        bool AddNewData(string name);

    }
    //2.服务类，实现契约
    //事务有10分钟的超时限制
    //[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
    [ServiceBehavior(IncludeExceptionDetailInFaults = true, TransactionTimeout = "00:30:00")]
    public class WCFServiceTransaction1 : IWCFServiceTransaction1
    {
        //实现接口定义的方法
        //需要事务环境，启动事务
        [OperationBehavior(TransactionScopeRequired = true, TransactionAutoComplete = true)]
        public bool AddNewData(string name)
        {
            Transaction transaction = Transaction.Current;
            Debug.Assert(System.Transactions.Transaction.Current.TransactionInformation.DistributedIdentifier!=Guid.Empty);
            Console.WriteLine("Create a new Transaction at {0}", System.Transactions.Transaction.Current.TransactionInformation.CreationTime);
            Console.WriteLine("WCFService 1 Transaction Status is {0}", System.Transactions.Transaction.Current.TransactionInformation.Status);
            Console.WriteLine("WCFService 1 Transaction LocalIdentifier is {0}", System.Transactions.Transaction.Current.TransactionInformation.LocalIdentifier);
            Console.WriteLine("WCFService 1 Transaction DistributedIdentifier is {0}", System.Transactions.Transaction.Current.TransactionInformation.DistributedIdentifier);

            //using (System.Transactions.TransactionScope ts = new System.Transactions.TransactionScope())
            //{
            try
            {
                using (userTableAdapter adapter = new userTableAdapter())
                {
                    if (1 == adapter.CreateUser(name))
                    {
                        Console.WriteLine("Calling WCF Transaction sucessfully

name length is:{0}", name.Length);
                    }
                    else
                    {
                        Console.WriteLine("Calling WCF Transaction unsucessfully

name length is:{0}", name.Length);
                        //return false;
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine("Calling WCF Transaction error:{0}", e.Message);
                throw e;
                //return false;
            }

            //ts.Complete();
            return true;

        }
    }
}

[align=left]我查阅到的资料：
1.http://social.msdn.microsoft.com/Forums/en-US/windowstransactionsprogramming/thread/d3020922-92b3-4dc5-ab22-b8fe34cbf40e；这个是属性没定义在操作契约上。
2.http://blogs.msdn.com/thelever/archive/2007/03/29/configuration-of-transactions-of-use-in-wcf.aspx；这个建议更换[TransactionFlow(TransactionFlowOption.Allowed)].
可以解决问题。但是我不能这样。
我这里是为了测试客户端事务模式写的代码。
所以大家都什么好的解决办法~谢谢[/align]
[align=left]3.已经找到解决办法：[/align]
[align=left]使用配置文件方式：[/align]
[align=left]添加一个绑定协议节点，。也可以使用编程方式。这里给出代码：[/align]

    <bindings>
      <netTcpBinding >
        <binding name="netTcpBindingTcp" transactionFlow="true" transactionProtocol="WSAtomicTransactionOctober2004"  >

          <!--<reliableSession enabled="true" ordered="true"/>
          <security mode="None"></security>-->
        </binding>
      </netTcpBinding>
    </bindings>
[align=left]然后在服务终结点里使用这个配置：[/align]

 

 <endpoint 
          address="net.tcp://localhost:9002/WCFServiceTransaction2" 
           bindingConfiguration="netTcpBindingTcp"
          binding="netTcpBinding" 
          contract="WCFService.IWCFServiceTransaction2">
        </endpoint>
 

【老徐的博客】

【作者】：Frank Xu Lei

【地址】：http://www.cnblogs.com/frank_xl/archive/2009/05/30/1492513.html