从WSDL文件获取策略的复杂LINQ查询

Question

 <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
     xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
     xmlns:tns="http://ttdev.com/ss"
     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns:sp="http://schemas.xmlsoap.org/ws/2005/07/securitypolicy"
     xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy"
     xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wsswssecurity-utility-1.0.xsd"
     name="SecureService" targetNamespace="http://ttdev.com/ss">

        <wsp:Policy wsu:Id="p0">
         <sp:SignedParts>
         <sp:Body />
         </sp:SignedParts>
        </wsp:Policy>
    <wsp:Policy wsu:Id="p1">
         <sp:SignedParts>
         <sp:Body />
         </sp:SignedParts>
        </wsp:Policy>
    <wsp:Policy wsu:Id="p2">
         <sp:SignedParts>
         <sp:Body />
         </sp:SignedParts>
        </wsp:Policy>
    <wsdl:binding name="SecureServiceSOAP" type="tns:SecureService">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />
    <wsdl:operation name="concat">
    <wsp:PolicyReference URI="#p1" wsdl:required="true" />
    <soap:operation soapAction="http://ttdev.com/ss/concat" />
    <wsdl:input>
    <soap:body parts="concatRequest" use="literal" />
    </wsdl:input>
    <wsdl:output>
    <soap:body parts="concatResponse" use="literal" />
    </wsdl:output>
    </wsdl:operation>
    </wsdl:binding>
    <wsdl:service name="SecureService">
    <wsdl:port binding="tns:SecureServiceSOAP" name="SecureServiceSOAP">
    <soap:address location="http://localhost:8080/axis2/services/SecureService" />
    </wsdl:port>
    </wsdl:service>
    </wsdl:definitions>

此WSDL包含策略部分和操作部分因此，根据操作名称和Tag 的URI属性wsp:PolicyReference我想从WSDl

中获取整个策略XMl部分

<wsp:Policy wsu:Id="p1">
     <sp:SignedParts>
     <sp:Body />
     </sp:SignedParts>
    </wsp:Policy>

可以有许多策略，但其ID与我传递的操作名的策略引用的URI值匹配，即我想要的策略。

你能帮我获取策略XML部分吗?

当某人将pOperationName变量的值传递为concat时，则输出字符串应如下:

<wsp:Policy wsu:Id="p1">
 <sp:SignedParts>
 <sp:Body />
 </sp:SignedParts>
</wsp:Policy>

使用以下代码完成(但此查询仅在存在一个wsp:policy标签时才能工作如何使其工作即使多个wsp:policy标签在WSDL中存在)

 private string GetPolicy()
        {
            XDocument wsdlDocument = XDocument.Load(_wsdlPath);
            XName operationElementName = XName.Get("operation", "http://schemas.xmlsoap.org/wsdl/");
            XName policyReferenceElementName = XName.Get("PolicyReference", "http://schemas.xmlsoap.org/ws/2004/09/policy");
            XName policyElementName = XName.Get("Policy", "http://schemas.xmlsoap.org/ws/2004/09/policy");
            XName idAttributeName = XName.Get("Id", "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wsswssecurity-utility-1.0.xsd");
            var operationPolicy = from operation in wsdlDocument.Descendants(operationElementName)
                                  where operation.Attribute("name").Value == _operationSelected //"concat"
                                  from policyReference in operation.Descendants(policyReferenceElementName)
                                  where policyReference.Attribute("URI").Value.StartsWith("#")
                                  let uri = policyReference.Attribute("URI").Value.Substring(1)
                                  from policy in wsdlDocument.Descendants(policyElementName)
                                  where policy.Attribute(idAttributeName).Value == uri            
                                  select policy.ToString();
           string temp = operationPolicy.FirstOrDefault();
            return temp;
        }

Answer 1

XDocument wsdlDocument = XDocument. load (_wsdlPath);

        XName operationElementName = XName.Get(Constants.OPERATION, Constants.WSDL_NS);
        XName policyReferenceElementName = XName.Get(Constants.POLICY_REFERENCE, Constants.NamespacePath.POLICY);
        XName policyElementName = XName.Get(Constants.POLICY, Constants.NamespacePath.POLICY);
        XName idAttributeName = XName.Get("Id", Constants.NamespacePath.WSSECURITY);

        var uriNo = from operation in wsdlDocument.Descendants(operationElementName)
                    where operation.HasAttributes && operation.Attribute(Constants.NAME).Value == _operationSelected
                    from policyReference in operation.Descendants(policyReferenceElementName)
                    where policyReference.HasAttributes && policyReference.Attribute(Constants.URI).Value.StartsWith(Constants.HASH)
                    select policyReference.Attribute(Constants.URI).Value.Substring(1);
        string uritemp = uriNo.FirstOrDefault().ToString();
        var operationPolicy = from policy in wsdlDocument.Descendants(policyElementName)
                              where policy.HasAttributes && policy.Attribute(idAttributeName).Value == uritemp
                              select policy;
        string temp = operationPolicy.FirstOrDefault().ToString();
        return temp;