从标题中删除某些由 WSE 3.0 创建的元素

Question

我正在使用 wsdl，它会自动将额外的元素添加到 xml 中。为了使其符合不使用这些元素的外部 Web 服务。请参见下图： http://img406.imageshack.us/img406/1307/differencese.png 左 = 需要删除红色元素 - 右 = 我需要它输出什么，

我已附加了创建信封和有效负载的代码。

    Dim content As myProxy.Content = New myProxy.Content
    Dim inputguid As String = Guid.NewGuid.ToString
    Dim service As myProxy.WebService = New myProxy.WebService
    Dim str As New System.Xml.XmlDocument
    Dim payload As myProxy.Payload = New myProxy.Payload

    'payload
    str.LoadXml(xmlstr)

    'manifest
    service.payloadManifest = New myProxy.PayloadManifest
    service.payloadManifest.manifest = New myProxy.Manifest() {New myProxy.Manifest}
    service.payloadManifest.manifest(0).element = "GetVehicleServiceHistory"
    service.payloadManifest.manifest(0).namespaceURI = ""
    service.payloadManifest.manifest(0).contentID = "Content0"
    service.payloadManifest.manifest(0).version = "2.01"
    service.SoapVersion = SoapProtocolVersion.Soap11

    service.UserAgent = "Jakarta Commons-HttpClient/3.1"
    Dim usertoken As New Microsoft.Web.Services3.Security.Tokens.UsernameToken("userid", "password", Microsoft.Web.Services3.Security.Tokens.PasswordOption.SendPlainText)

    service.RequestSoapContext.Security.Tokens.Add(usertoken)
    service.RequestSoapContext.Security.MustUnderstand = False

    payload.content = New myProxy.Content() {content}
    ReDim Preserve payload.content(0)
    payload.content(0).Any = str.DocumentElement
    payload.content(0).id = "Content0"

    service.Url = "http://localhost:8080"
    service.ProcessMessage(payload)

任何帮助将不胜感激。

迈克尔

Answer 1

    Dim content As blah.Content = New blah.Content
    Dim inputguid As String = Guid.NewGuid.ToString
    Dim service As blah.WebService = New blah.WebService
    Dim str As New System.Xml.XmlDocument
    Dim payload As blah.Payload = New blah.Payload

    'payload
    str.LoadXml(xmlstr)

    'manifest
    service.payloadManifest = New blah.PayloadManifest
    service.payloadManifest.manifest = New blah.Manifest() {New blah.Manifest}
    service.payloadManifest.manifest(0).element = "GetVehicleServiceHistory"
    service.payloadManifest.manifest(0).namespaceURI = ""
    service.payloadManifest.manifest(0).contentID = "Content0"
    service.payloadManifest.manifest(0).version = "2.01"
    service.SoapVersion = SoapProtocolVersion.Soap11

    service.UserAgent = "Jakarta Commons-HttpClient/3.1"


    payload.content = New blah.Content() {content}
    ReDim Preserve payload.content(0)
    payload.content(0).Any = str.DocumentElement
    payload.content(0).id = "Content0"

    service.ProcessMessage(payload)

注意到我已经删除了 WSE 编码：-

在 Web 参考 Reference.vb 中，我在 pcublic sub new 中添加了以下代码 -

        Dim policy As New Policy()
        policy.Assertions.Add(New MyAssertion())
        Me.SetPolicy(policy)

然后

Public Class MyPolicy
    Inherits SoapFilter
    Public Overrides Function ProcessMessage(ByVal envelope As SoapEnvelope) As SoapFilterResult
        'creating the <wsse:Security> element in the outgoing message
        Dim securityNode As XmlNode = envelope.CreateNode(XmlNodeType.Element, "wsse:Security", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
        Dim securityAttr As XmlAttribute = envelope.CreateAttribute("soap:mustunderstand")
        securityAttr.Value = "1"
        'creating the <wsse:usernameToken> element
        Dim usernameTokenNode As XmlNode = envelope.CreateNode(XmlNodeType.Element, "wsse:UsernameToken", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
        Dim userElement As XmlElement = usernameTokenNode
        userElement.SetAttribute("xmlns:wsu", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd")


        'creating the <wsse:Username> element
        Dim userNameNode As XmlNode = envelope.CreateNode(XmlNodeType.Element, "wsse:Username", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
        userNameNode.InnerXml = "username"


        'creating the <wsse:password> element
        Dim pwdNode As XmlNode = envelope.CreateNode(XmlNodeType.Element, "wsse:Password", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd")
        Dim pwdElement As XmlElement = pwdNode
        pwdElement.SetAttribute("Type", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText")
        pwdNode.InnerXml = "password"

        usernameTokenNode.AppendChild(userNameNode)
        usernameTokenNode.AppendChild(pwdNode)
        securityNode.AppendChild(usernameTokenNode)
        envelope.ImportNode(securityNode, True)
        Dim node As XmlNode = envelope.Header
        node.AppendChild(securityNode)


        Dim actionnode As XmlNode = envelope.Header("wsa:Action")
        envelope.Header.RemoveChild(actionnode)

        Dim messageNode As XmlNode = envelope.Header("wsa:MessageID")
        envelope.Header.RemoveChild(messageNode)

        Dim replyToNode As XmlNode = envelope.Header("wsa:ReplyTo")
        envelope.Header.RemoveChild(replyToNode)

        Dim toNode As XmlNode = envelope.Header("wsa:To")
        envelope.Header.RemoveChild(toNode)

        Return SoapFilterResult.[Continue]
    End Function
End Class

Public Class MyAssertion
    Inherits PolicyAssertion
    Public Overrides Function CreateClientInputFilter(ByVal context As FilterCreationContext) As SoapFilter
        Return Nothing
    End Function

    Public Overrides Function CreateClientOutputFilter(ByVal context As FilterCreationContext) As SoapFilter
        Return New MyPolicy()
    End Function

    Public Overrides Function CreateServiceInputFilter(ByVal context As FilterCreationContext) As SoapFilter
        Return Nothing
    End Function

    Public Overrides Function CreateServiceOutputFilter(ByVal context As FilterCreationContext) As SoapFilter
        Return Nothing
    End Function
End Class

公共覆盖函数 ProcessMessage - 覆盖 processmessage 并让我手动编辑

我需要的 信封手动删除我不需要的元素并手动插入我需要的元素：

Answer 2

您可以编写一个 SoapExtension。我过去曾这样做过，以清除 SOAP 响应中的非法字符，但您也可以使用它来修改您的请求。基本上，它会在发送 SOAP 包之前或在您接收它时拦截 SOAP 包，但在 .Net 反序列化它之前。

Stefan Goßner 有一篇旧博客文章解释了 如何构建 SoapExtension。您可以将代码放入 ProcessOutput 方法中。

缺点是您将 SOAP 消息解析为文本，但如果效果更好的话，当然可以将其加载到 XDocument 或 XmlDocument 中。但之后您也会将其作为文本传递。

如果您使用的是 WCF，请查看在 WCF 客户端中拦截消息，因为您必须实现 IClientMessageInspector 来进行 SOAP 拦截。

希望这对您有所帮助。