我有一个 WF4 WCF 服务,我正在尝试通过 SOAP 消息使用基于内容的相关性来工作。
我收到以下错误消息:
<Message>A correlation query yielded an empty result set. Please ensure correlation queries for the endpoint are correctly configured.</Message>
<StackTrace><![CDATA[at System.ServiceModel.Activities.Dispatcher.CorrelationKeyCalculator.Calculator`1.CalculateKeys(T target, Message messageToReadHeaders, InstanceKey& instanceKey, ICollection`1& additionalKeys)
at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.GetInstanceKeys(OperationContext operationContext, InstanceKey& instanceKey, ICollection`1& additionalKeys)
at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult.EnsureInstanceId()
at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult.Process()
at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.ControlOperationAsyncResult..ctor(ControlOperationInvoker invoker, Object[] inputs, IInvokeReceivedNotification notification, TimeSpan timeout, AsyncCallback callback, Object state)
at System.ServiceModel.Activities.Dispatcher.ControlOperationInvoker.InvokeBegin(Object instance, Object[] inputs, IInvokeReceivedNotification notification, AsyncCallback callback, Object state)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)]]></StackTrace>
这是我的课
[MessageContract(IsWrapped = false)]
public class ClaimObj
{
[MessageHeader]
public string CorrelationId { get; set; }
[MessageBodyMember]
public string InstanceId { get; set; }
}
这是我的 xaml,由于专有原因更改了命名空间
<Activity mc:Ignorable="sap" x:Class="Project.WorkFlow.Activities.Activity4" sap:VirtualizedContainerService.HintSize="654,676" mva:VisualBasic.Settings="Assembly references and imported namespaces for internal implementation" xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities" xmlns:av="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:mv="clr-namespace:Microsoft.VisualBasic;assembly=System" xmlns:mva="clr-namespace:Microsoft.VisualBasic.Activities;assembly=System.Activities" xmlns:p="http://ns.ns2.com/" xmlns:p1="http://schemas.microsoft.com/netfx/2009/xaml/servicemodel" xmlns:qm="clr-namespace:Project.MessageWrappers;assembly=Project.MessageWrappers" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:s1="clr-namespace:System;assembly=System" xmlns:s2="clr-namespace:System;assembly=System.Xml" xmlns:s3="clr-namespace:System;assembly=System.Core" xmlns:sa="clr-namespace:System.Activities;assembly=System.Activities" xmlns:sad="clr-namespace:System.Activities.Debugger;assembly=System.Activities" xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation" xmlns:scg="clr-namespace:System.Collections.Generic;assembly=System" xmlns:scg1="clr-namespace:System.Collections.Generic;assembly=System.ServiceModel" xmlns:scg2="clr-namespace:System.Collections.Generic;assembly=System.Core" xmlns:scg3="clr-namespace:System.Collections.Generic;assembly=mscorlib" xmlns:sd="clr-namespace:System.Data;assembly=System.Data" xmlns:sl="clr-namespace:System.Linq;assembly=System.Core" xmlns:ssa="clr-namespace:System.ServiceModel.Activities;assembly=System.ServiceModel.Activities" xmlns:ssx="clr-namespace:System.ServiceModel.XamlIntegration;assembly=System.ServiceModel" xmlns:st="clr-namespace:System.Text;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Flowchart sad:XamlDebuggerXmlReader.FileName="D:\Activity4.xaml" sap:VirtualizedContainerService.HintSize="614,636">
<Flowchart.Variables>
<Variable x:TypeArguments="qm:ClaimObj" Name="RequestObj" />
<Variable x:TypeArguments="p1:CorrelationHandle" Name="handle" />
</Flowchart.Variables>
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<x:Boolean x:Key="IsExpanded">False</x:Boolean>
<av:Point x:Key="ShapeLocation">270,2.5</av:Point>
<av:Size x:Key="ShapeSize">60,75</av:Size>
<av:PointCollection x:Key="ConnectorLocation">300,77.5 300,107.5 290,107.5 290,115</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<Flowchart.StartNode>
<FlowStep x:Name="__ReferenceID1">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">162.5,115</av:Point>
<av:Size x:Key="ShapeSize">255,90</av:Size>
<av:PointCollection x:Key="ConnectorLocation">290,205 290,235</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:Receive x:Name="__ReferenceID0" CanCreateInstance="True" CorrelatesWith="[handle]" sap:VirtualizedContainerService.HintSize="255,90" OperationName="Process" ServiceContractName="p:IActivity4Service">
<p1:Receive.CorrelatesOn>
<p1:XPathMessageQuery x:Key="key1">
<p1:XPathMessageQuery.Namespaces>
<ssx:XPathMessageContextMarkup>
<x:String x:Key="xg0">http://schemas.datacontract.org/2004/07/Project.MessageWrappers</x:String>
</ssx:XPathMessageContextMarkup>
</p1:XPathMessageQuery.Namespaces>sm:header()/tempuri:CorrelationId</p1:XPathMessageQuery>
</p1:Receive.CorrelatesOn>
<p1:ReceiveMessageContent DeclaredMessageType="qm:ClaimObj">
<OutArgument x:TypeArguments="qm:ClaimObj">[RequestObj]</OutArgument>
</p1:ReceiveMessageContent>
</p1:Receive>
<FlowStep.Next>
<FlowStep x:Name="__ReferenceID2">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">162.5,235</av:Point>
<av:Size x:Key="ShapeSize">255,90</av:Size>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:SendReply Request="{x:Reference __ReferenceID0}" DisplayName="SendReplyToReceive" sap:VirtualizedContainerService.HintSize="255,90">
<p1:SendMessageContent DeclaredMessageType="qm:ClaimObj">
<InArgument x:TypeArguments="qm:ClaimObj">[RequestObj]</InArgument>
</p1:SendMessageContent>
</p1:SendReply>
</FlowStep>
</FlowStep.Next>
</FlowStep>
</Flowchart.StartNode>
<x:Reference>__ReferenceID1</x:Reference>
<x:Reference>__ReferenceID2</x:Reference>
我知道问题出在我的 xpath 相关性上。我尝试了许多不同的想法,唯一有效的想法是 11445 ( http://msdn.microsoft.com/en-us/library/ee358742.aspx ),但这并没有给我提供相关性跟踪。这些不起作用
sm:body()/xg0:ClaimObj/xg0:CorrelationId
sm:header()/tempuri:CorrelationId
sm:header()/xg0:ClaimObj/xg0:CorrelationId
sm:header()/tempuri:ClaimObj/tempuri:CorrelationId
我可以让它与 DataContracts 一起正常工作,但我需要使用 MessageContracts
更新: 这是我真正需要做的:
接收请求
向服务器 X 发送单向 WCF 调用
(第二次接收)服务器 X 在新的 wcf 调用中使用相关 ID 发送回工作流,而不是回复
做一些其他的事情
发送对原始接收的回复
这是我正在尝试开始工作的基本工作流程。问题是由于未找到 xpath,因此未调用第二个接收。
顺便说一句,当我尝试在第一次接收中使用correlationinitializer时,我遇到了同样的问题
<Activity mc:Ignorable="sap" x:Class="Project.WorkFlow.Activities.Activity4" sap:VirtualizedContainerService.HintSize="828,872" mva:VisualBasic.Settings="Assembly references and imported namespaces for internal implementation" xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities" xmlns:av="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:mv="clr-namespace:Microsoft.VisualBasic;assembly=System" xmlns:mva="clr-namespace:Microsoft.VisualBasic.Activities;assembly=System.Activities" xmlns:p="http://ns.domain.com/" xmlns:p1="http://schemas.microsoft.com/netfx/2009/xaml/servicemodel" xmlns:qm="clr-namespace:Project.MessageWrappers;assembly=Project.MessageWrappers" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:s1="clr-namespace:System;assembly=System" xmlns:s2="clr-namespace:System;assembly=System.Xml" xmlns:s3="clr-namespace:System;assembly=System.Core" xmlns:sa="clr-namespace:System.Activities;assembly=System.Activities" xmlns:sad="clr-namespace:System.Activities.Debugger;assembly=System.Activities" xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation" xmlns:scg="clr-namespace:System.Collections.Generic;assembly=System" xmlns:scg1="clr-namespace:System.Collections.Generic;assembly=System.ServiceModel" xmlns:scg2="clr-namespace:System.Collections.Generic;assembly=System.Core" xmlns:scg3="clr-namespace:System.Collections.Generic;assembly=mscorlib" xmlns:sd="clr-namespace:System.Data;assembly=System.Data" xmlns:sl="clr-namespace:System.Linq;assembly=System.Core" xmlns:ssa="clr-namespace:System.ServiceModel.Activities;assembly=System.ServiceModel.Activities" xmlns:ssx="clr-namespace:System.ServiceModel.XamlIntegration;assembly=System.ServiceModel" xmlns:st="clr-namespace:System.Text;assembly=mscorlib" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Flowchart sad:XamlDebuggerXmlReader.FileName="D:\Activity4.xaml" sap:VirtualizedContainerService.HintSize="788,832">
<Flowchart.Variables>
<Variable x:TypeArguments="qm:ClaimObj" Name="RequestObj" />
<Variable x:TypeArguments="p1:CorrelationHandle" Name="handle" />
<Variable x:TypeArguments="qm:GetClaimObj" Name="GetClaimIn" />
</Flowchart.Variables>
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<x:Boolean x:Key="IsExpanded">False</x:Boolean>
<av:Point x:Key="ShapeLocation">270,2.5</av:Point>
<av:Size x:Key="ShapeSize">60,75</av:Size>
<av:PointCollection x:Key="ConnectorLocation">300,77.5 300,107.5 290,107.5 290,115</av:PointCollection>
<x:Double x:Key="Width">773.5</x:Double>
<x:Double x:Key="Height">796.04</x:Double>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<Flowchart.StartNode>
<FlowStep x:Name="__ReferenceID1">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">162.5,115</av:Point>
<av:Size x:Key="ShapeSize">255,90</av:Size>
<av:PointCollection x:Key="ConnectorLocation">290,205 290,209 241,209 241,239</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:Receive x:Name="__ReferenceID0" CanCreateInstance="True" CorrelatesWith="[handle]" sap:VirtualizedContainerService.HintSize="255,90" OperationName="Process" ServiceContractName="p:IActivity4Service">
<p1:Receive.KnownTypes>
<x:Type Type="qm:ClaimObj" />
</p1:Receive.KnownTypes>
<p1:ReceiveMessageContent DeclaredMessageType="qm:ClaimObj">
<OutArgument x:TypeArguments="qm:ClaimObj">[RequestObj]</OutArgument>
</p1:ReceiveMessageContent>
</p1:Receive>
<FlowStep.Next>
<FlowStep x:Name="__ReferenceID2">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">120,239</av:Point>
<av:Size x:Key="ShapeSize">242,93</av:Size>
<av:PointCollection x:Key="ConnectorLocation">241,332 240,332 240,355</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:InitializeCorrelation Correlation="[handle]" sap:VirtualizedContainerService.HintSize="242,93">
<InArgument x:TypeArguments="x:String" x:Key="key1">[RequestObj.CorrelationId]</InArgument>
</p1:InitializeCorrelation>
<FlowStep.Next>
<FlowStep x:Name="__ReferenceID3">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">112.5,355</av:Point>
<av:Size x:Key="ShapeSize">255,90</av:Size>
<av:PointCollection x:Key="ConnectorLocation">240,445 240,475 241,475 241,479</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:Receive CorrelatesWith="[handle]" sap:VirtualizedContainerService.HintSize="255,90" OperationName="GetClaim" ServiceContractName="p:IActivity4Service">
<p1:Receive.CorrelatesOn>
<p1:XPathMessageQuery x:Key="key1">
<p1:XPathMessageQuery.Namespaces>
<ssx:XPathMessageContextMarkup>
<x:String x:Key="xg0">http://schemas.datacontract.org/2004/07/Project.MessageWrappers</x:String>
</ssx:XPathMessageContextMarkup>
</p1:XPathMessageQuery.Namespaces>sm:header()/xg0:CorrelationId</p1:XPathMessageQuery>
</p1:Receive.CorrelatesOn>
<p1:ReceiveMessageContent DeclaredMessageType="qm:GetClaimObj">
<OutArgument x:TypeArguments="qm:GetClaimObj">[GetClaimIn]</OutArgument>
</p1:ReceiveMessageContent>
</p1:Receive>
<FlowStep.Next>
<FlowStep x:Name="__ReferenceID4">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">120,479</av:Point>
<av:Size x:Key="ShapeSize">242,58</av:Size>
<av:PointCollection x:Key="ConnectorLocation">241,537 240,537 240,565</av:PointCollection>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<Assign sap:VirtualizedContainerService.HintSize="242,58">
<Assign.To>
<OutArgument x:TypeArguments="x:String">[GetClaimIn.InstanceId]</OutArgument>
</Assign.To>
<Assign.Value>
<InArgument x:TypeArguments="x:String">Get is called</InArgument>
</Assign.Value>
</Assign>
<FlowStep.Next>
<FlowStep x:Name="__ReferenceID5">
<sap:WorkflowViewStateService.ViewState>
<scg3:Dictionary x:TypeArguments="x:String, x:Object">
<av:Point x:Key="ShapeLocation">112.5,565</av:Point>
<av:Size x:Key="ShapeSize">255,90</av:Size>
</scg3:Dictionary>
</sap:WorkflowViewStateService.ViewState>
<p1:SendReply Request="{x:Reference __ReferenceID0}" DisplayName="SendReplyToReceive" sap:VirtualizedContainerService.HintSize="255,90">
<p1:SendMessageContent DeclaredMessageType="qm:GetClaimObj">
<InArgument x:TypeArguments="qm:GetClaimObj">[GetClaimIn]</InArgument>
</p1:SendMessageContent>
</p1:SendReply>
</FlowStep>
</FlowStep.Next>
</FlowStep>
</FlowStep.Next>
</FlowStep>
</FlowStep.Next>
</FlowStep>
</FlowStep.Next>
</FlowStep>
</Flowchart.StartNode>
<x:Reference>__ReferenceID1</x:Reference>
<x:Reference>__ReferenceID2</x:Reference>
<x:Reference>__ReferenceID3</x:Reference>
<x:Reference>__ReferenceID4</x:Reference>
<x:Reference>__ReferenceID5</x:Reference>
最佳答案
我在 XAML 中缺少 CorrelationInitializers。 CorrelationInitializers 用于在 Receive 或 SendReply 事件上创建与原始请求的关联。之后,CorrelatesOn 将在后续的接收事件中使用。
关于wcf - WF4 WCF 关联和 MessageContract 不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9215551/