调用WCF服务</s：body>时清空消息<s：body>

时间：2014-07-14 14:09:36

标签： vb.net wcf

所以，我有这群第三方网络服务我已经工作了一段时间没有太多麻烦，但突然有一项新服务我遇到了这个问题，它一直给我一些奇怪的响应。

检查日志后，WCF消息正文显示为空：

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Header>
<Action s:mustUnderstand="1" xmlns="http://schemas.microsoft.com/ws/2005/05/addressing/none">urn:mediate</Action>
<VsDebuggerCausalityData xmlns="http://schemas.microsoft.com/vstudio/diagnostics/servicemodelsink"></VsDebuggerCausalityData>
</s:Header>
<s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"></s:Body>
</s:Envelope>

我以与往常一样的方式从代码中调用服务：

Dim nieobecnosc As SIMPLEWSProxy.nieobecnosc_TYPE = New SIMPLEWSProxy.nieobecnosc_TYPE()

nieobecnosc.wniosek_id = "8"
nieobecnosc.pracownik_nrewid = 100019
nieobecnosc.nieobecnosc_kod = "W"
nieobecnosc.data_od = "2014-10-21"
nieobecnosc.data_do = "2014-10-25"

Dim request As SIMPLEAbsenceCreateConnect.mediateRequest = New SIMPLEAbsenceCreateConnect.mediateRequest(nieobecnosc)

Dim proxy As SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortTypeClient = New SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortTypeClient("AbsenceCreateProxyHttpsSoap11Endpoint")

proxy.ClientCredentials.UserName.UserName = "MyUsername"
proxy.ClientCredentials.UserName.Password = "MyPassword"

Dim proxyCallable As SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType = proxy

Dim response As System.ServiceModel.Channels.Message = proxyCallable.mediate(request)

Webservice的wsdl看起来像这样：

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:tns="http://ws.apache.org/axis2" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" targetNamespace="http://ws.apache.org/axis2">
   <wsp:Policy xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="UTOverTransport">
      <wsp:ExactlyOne>
         <wsp:All>
            <sp:TransportBinding xmlns:sp="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy">
               <wsp:Policy>
                  <sp:TransportToken>
                     <wsp:Policy>
                        <sp:HttpsToken RequireClientCertificate="false"/>
                     </wsp:Policy>
                  </sp:TransportToken>
                  <sp:AlgorithmSuite>
                     <wsp:Policy>
                        <sp:Basic256/>
                     </wsp:Policy>
                  </sp:AlgorithmSuite>
                  <sp:Layout>
                     <wsp:Policy>
                        <sp:Lax/>
                     </wsp:Policy>
                  </sp:Layout>
                  <sp:IncludeTimestamp/>
               </wsp:Policy>
            </sp:TransportBinding>
            <sp:SignedSupportingTokens xmlns:sp="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy">
               <wsp:Policy>
                  <sp:UsernameToken sp:IncludeToken="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy/IncludeToken/AlwaysToRecipient"/>
               </wsp:Policy>
            </sp:SignedSupportingTokens>
         </wsp:All>
      </wsp:ExactlyOne>
   </wsp:Policy>
   <wsdl:types/>
   <wsdl:message name="in"/>
   <wsdl:message name="out"/>
   <wsdl:portType name="AbsenceCreateProxyPortType">
      <wsdl:operation name="mediate">
         <wsdl:input message="tns:in" wsaw:Action="urn:mediate"/>
         <wsdl:output message="tns:out" wsaw:Action="urn:mediateResponse"/>
      </wsdl:operation>
   </wsdl:portType>
   <wsdl:binding name="AbsenceCreateProxySoap11Binding" type="tns:AbsenceCreateProxyPortType">
      <wsp:PolicyReference xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" URI="#UTOverTransport"/>
      <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
      <wsdl:operation name="mediate">
         <soap:operation soapAction="urn:mediate" style="document"/>
         <wsdl:input>
            <soap:body use="literal"/>
         </wsdl:input>
         <wsdl:output>
            <soap:body use="literal"/>
         </wsdl:output>
      </wsdl:operation>
   </wsdl:binding>
   <wsdl:binding name="AbsenceCreateProxySoap12Binding" type="tns:AbsenceCreateProxyPortType">
      <wsp:PolicyReference xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" URI="#UTOverTransport"/>
      <soap12:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
      <wsdl:operation name="mediate">
         <soap12:operation soapAction="urn:mediate" style="document"/>
         <wsdl:input>
            <soap12:body use="literal"/>
         </wsdl:input>
         <wsdl:output>
            <soap12:body use="literal"/>
         </wsdl:output>
      </wsdl:operation>
   </wsdl:binding>
   <wsdl:binding name="AbsenceCreateProxyHttpBinding" type="tns:AbsenceCreateProxyPortType">
      <http:binding verb="POST"/>
      <wsdl:operation name="mediate">
         <http:operation location="mediate"/>
         <wsdl:input>
            <mime:content type="text/xml" part="parameters"/>
         </wsdl:input>
         <wsdl:output>
            <mime:content type="text/xml" part="parameters"/>
         </wsdl:output>
      </wsdl:operation>
   </wsdl:binding>
   <wsdl:service name="AbsenceCreateProxy">
      <wsdl:port name="AbsenceCreateProxyHttpsSoap11Endpoint" binding="tns:AbsenceCreateProxySoap11Binding">
         <soap:address location="https://192.168.1.3:8243/services/AbsenceCreateProxy.AbsenceCreateProxyHttpsSoap11Endpoint"/>
      </wsdl:port>
      <wsdl:port name="AbsenceCreateProxyHttpsSoap12Endpoint" binding="tns:AbsenceCreateProxySoap12Binding">
         <soap12:address location="https://192.168.1.3:8243/services/AbsenceCreateProxy.AbsenceCreateProxyHttpsSoap12Endpoint"/>
      </wsdl:port>
      <wsdl:port name="AbsenceCreateProxyHttpsEndpoint" binding="tns:AbsenceCreateProxyHttpBinding">
         <http:address location="https://192.168.1.3:8243/services/AbsenceCreateProxy.AbsenceCreateProxyHttpsEndpoint"/>
      </wsdl:port>
   </wsdl:service>

在网络服务方面，我不是专家，说实话，我不知道如何开始寻找潜在的问题，因为我无法获得服务。

有什么想法吗？

谢谢，Bartek

编辑：更新了我的问题以及其他一些信息，因为它可能是相关的。

通常，当我从为类似服务提供的wsdls自动生成代码时，生成的类最初看起来像这样（为清楚起见，删除了不相关的代码）：

Namespace SIMPLEAbsenceCreateConnect

    Public Interface AbsenceCreateProxyPortType
        Function mediate(ByVal request As SIMPLEAbsenceCreateConnect.mediateRequest) As SIMPLEAbsenceCreateConnect.mediateResponse
    End Interface

    Partial Public Class mediateRequest

        Public Sub New()
            MyBase.New()
        End Sub
    End Class

    Partial Public Class mediateResponse

        Public Sub New()
            MyBase.New()
        End Sub
    End Class

    Public Interface AbsenceCreateProxyPortTypeChannel
        Inherits SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType, System.ServiceModel.IClientChannel
    End Interface

    Partial Public Class AbsenceCreateProxyPortTypeClient
        Inherits System.ServiceModel.ClientBase(Of SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType)
        Implements SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType

        Public Sub New()
            MyBase.New()
        End Sub

        <System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)> _
        Function SIMPLEAbsenceCreateConnect_AbsenceCreateProxyPortType_mediate(ByVal request As SIMPLEAbsenceCreateConnect.mediateRequest) As SIMPLEAbsenceCreateConnect.mediateResponse Implements SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType.mediate
            Return MyBase.Channel.mediate(request)
        End Function

        Public Sub mediate()
            Dim inValue As SIMPLEAbsenceCreateConnect.mediateRequest = New SIMPLEAbsenceCreateConnect.mediateRequest()
            Dim retVal As SIMPLEAbsenceCreateConnect.mediateResponse = CType(Me, SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType).mediate(inValue)
        End Sub
    End Class
End Namespace

但是这段代码有问题：mediateRequest和mediateResponse类都是空的。

要解决此问题，我修改了mediateRequest类，因此它可以包含需要发送的实际请求数据：

Partial Public Class mediateRequest

    Public nieobecnosc As SIMPLEWSProxy.nieobecnosc_TYPE

    Public Sub New()
        MyBase.New()
    End Sub

    Public Sub New(ByVal A_nieobecnosc As SIMPLEWSProxy.nieobecnosc_TYPE)
        MyBase.New()
        Me.nieobecnosc = A_nieobecnosc
    End Sub

End Class

此更改标准调用后：

Dim response As SIMPLEAbsenceCreateConnect.mediateResponse = proxyCallable.mediate(request)

抛出异常：

  

结束元素＆＃39;身体＆＃39;从命名空间   ＆＃39; http://schemas.xmlsoap.org/soap/envelope/＆＃39;预期。找到元素   ＆＃39;响应＆＃39;来自命名空间＆＃39;

我通常的解决方法是修改SIMPLEAbsenceCreateConnect_AbsenceCreateProxyPortType_mediate（）函数以返回System.ServiceModel.Channels.Message类型，而不是mediateResponse，可能是错误的方法，但它适用于我的应用程序中的所有其他Web服务。

Function SIMPLEAbsenceCreateConnect_AbsenceCreateProxyPortType_mediate(ByVal request As SIMPLEAbsenceCreateConnect.mediateRequest) As System.ServiceModel.Channels.Message Implements SIMPLEAbsenceCreateConnect.AbsenceCreateProxyPortType.mediate
    Return MyBase.Channel.mediate(request)
End Function

2 个答案:

答案 0 :(得分：0)

尝试：

Dim response As SIMPLEAbsenceCreateConnect.mediateResponse = proxyCallable.mediate(request)

并检查身体

答案 1 :(得分：0)

好的，我终于开始工作了！

我感到非常愚蠢。我在mediateRequest中的nieobecnosc属性应该以这种方式声明：

<System.ServiceModel.MessageBodyMemberAttribute(Namespace:="http://www.simple.com.pl/SimpleErp", Order:=0)> _
Public nieobecnosc As SIMPLEWSProxy.nieobecnosc_TYPE
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