Question

在WCF服务生成的WSDL中定义Response对象的MinOccure和Nillable属性时遇到问题。 MinOccure仍然为0，Nillable仍然为真。我找到了代码https://github.com/covermymeds/integration-feedback-reference/blob/master/IntegrationPartnerEndpoint/RequiredParametersBehaviorAttribute.cs，并对其进行了修改，以也可以编辑输出参数（方法IWsdlExportExtension.ExportContract）：

var outputMessage = operation.Messages.Where(m => m.Direction == MessageDirection.Output).First();
var outParam = operation.SyncMethod.ReturnParameter;

object[] outAttributes = outParam.GetCustomAttributes(typeof(OptionalAttribute), false);
if (outAttributes.Length == 0)
{
  // The parameter has no [Optional] attribute, add it to the list of parameters
  // that we need to adjust the XML schema for later on.
  _requiredParameter.Add(new RequiredMessagePart()
  {
    Namespace = outputMessage.Body.ReturnValue.Namespace,
    Message = $"{operation.Name}Response",
    Name = outputMessage.Body.ReturnValue.Name
  });
}

方法IWsdlExportExtension.ExportEndpoint设置MinOccures和IsNillable（这没有任何更改）：

  void IWsdlExportExtension.ExportEndpoint(WsdlExporter exporter, WsdlEndpointConversionContext context)
  {
    if (_requiredParameter == null)
    {
      // If we have defined two endpoints implementing the same contract within the same service,
      // this method will be called twice. We only need to modify the schema once however.
      return;
    }

    foreach (var p in _requiredParameter)
    {
      var schemas = exporter.GeneratedXmlSchemas.Schemas(p.Namespace);

      foreach (XmlSchema schema in schemas)
      {
        var message = (XmlSchemaElement)schema.Elements[p.XmlQualifiedName];
        var complexType = message.ElementSchemaType as XmlSchemaComplexType;
        var sequence = complexType.Particle as XmlSchemaSequence;

        foreach (XmlSchemaElement item in sequence.Items)
        {
          if (item.Name == p.Name)
          {
            item.MinOccurs = 1;
            item.MinOccursString = "1";
            item.IsNillable = false;
            break;
          }
        }
      }
    }

    // Throw away the temporary list we generated
    _requiredParameter = null;
  }

此后，将参数MinOccures设置为1，但在生成的WSDL中缺少nillable（我认为因此默认值为false）。

有什么方法可以显示即使是假的nillable吗？

C＃WCF服务Nillable false在结果xml中丢失

0 个答案: