C# 向MessageContract WCF响应对象（MessageBodyMember）添加多个名称空间

我们的WCF设置包含以下合同：

    [ServiceContract(
    Namespace = Constants.Namespaces.HL7Namespace,
    Name = Constants.Roles.ContentRequiredDocumentManagementSystem)]
// XmlSerializerFormat is needed to expose the HL7 schema fields without the "Field" suffix on each one, eg: idField
[XmlSerializerFormat]
public interface ICDARequest
{
    [OperationContract(
        // wsdl request action
        Action = Constants.Namespaces.HL7Namespace + ":" + Constants.Interactions.RCMR_IN000029UV01 + "." + Constants.VersionType.NormativeCode + Constants.Version.InteractionVersion,
        // wsdl operation name
        Name = Constants.Interactions.RCMR_IN000029UV01,
        // wsdl response action
        ReplyAction = Constants.Namespaces.HL7Namespace + ":" + Constants.Interactions.RCMR_IN000030UV01 + "." + Constants.VersionType.NormativeCode + Constants.Version.InteractionVersion)]
    SearchMessagesResponse SearchMessages(SearchMessagesRequest RCMR_IN000029UV01);


    [MessageContract(
        IsWrapped = false]
    public class SearchMessagesResponse
    {
        [MessageBodyMember(
            Name = State.Constants.Interactions.RCMR_IN000030UV01,
            Namespace = State.Constants.Namespaces.HL7Namespace)]
        public RCMR_IN000030UV01 data;
    }
}

• 这些类基于使用

  xsd.exe

  基于HL7v3架构生成的类
• 然后，我们修改了模式，添加了一个自定义元素，使用自定义名称空间对其进行区分，并重新生成了类
• 这很有效

它补充说：

[System.Xml.Serialization.XmlTypeAttribute(TypeName = "BCCDX.DistributionStatus", Namespace = "urn:bccdx.ca")]
public partial class BCCDXDistributionStatus
{
    [System.Xml.Serialization.XmlElementAttribute("receivedTime", Namespace = "urn:bccdx.ca", IsNullable = false)]
    public TS receivedTime{...}
}

这正是我们想要的

然后在WCF服务中，我们可以使用新类和成员：

var distStatus = new BCCDXDistributionStatus();
distStatus.receivedTime = CreateTS(locStat.MessageDownloadDate);

然后，它被序列化并通过网络发送出去，如下所示：

<distributionStatus xmlns="urn:bccdx.ca">
    <receivedTime value="201702150956-0800"/>
</distributionStatus>

<RCMR_IN000030UV01 ITSVersion="XML_1.0" xmlns="urn:hl7-org:v3">
...
</RCMR_IN000030UV01>

当真正需要的是：

<RCMR_IN000030UV01 ITSVersion="XML_1.0" xmlns="urn:hl7-org:v3" xmlns:x="urn:bccdx.ca">
...
</RCMR_IN000030UV01>

...

注意带有前缀的urn:bccdx.ca

---

我想知道，如果可以的话，我们如何通过契约向产生的序列化消息XML添加多个名称空间，并带有前缀？我已经在web上看到了重写默认序列化程序的提示，但我不希望这样。这肯定是以前考虑过并处理过的吗？

首先，我将假设，在您的服务合同中的某个地方，您正在指定使用

XmlSerializer

，例如：

[ServiceContract()]
[XmlSerializerFormat]
public interface IService1
{
    [OperationContract(
        // wsdl request action
        Action = Constants.Namespaces.HL7Namespace + ":" + Constants.Interactions.RCMR_IN000029UV01 + "." + Constants.VersionType.NormativeCode + Constants.Version.InteractionVersion,
        // wsdl operation name
        Name = Constants.Interactions.RCMR_IN000029UV01,
        // wsdl response action
        ReplyAction = Constants.Namespaces.HL7Namespace + ":" + Constants.Interactions.RCMR_IN000030UV01 + "." + Constants.VersionType.NormativeCode + Constants.Version.InteractionVersion)]
    SearchMessagesResponse SearchMessages(/* SearchMessagesRequest RCMR_IN000029UV01*/);
}

虽然您的问题中没有提到这一点，但如果您没有这样做，则类型中的

[System.Xml.Serialization.xmlementAttribute（…）]

属性声明将无效，因为它们被

DataContractSerializer

忽略

其次，我将假设您的

RCMR_IN000030UV01

类型当前看起来像这样：

[XmlRoot(ElementName = "RCMR_IN000030UV01", Namespace = "urn:hl7-org:v3")]
public partial class RCMR_IN000030UV01
{
    // The initially auto-generated code
    [XmlAttribute(AttributeName = "ITSVersion")]
    public string ITSVersion { get; set; }
}

public partial class RCMR_IN000030UV01
{
    // The added property
    [System.Xml.Serialization.XmlElementAttribute("distributionStatus", Namespace = "urn:bccdx.ca", IsNullable = false)]
    public BCCDXDistributionStatus distStatus { get; set; }
}

[System.Xml.Serialization.XmlTypeAttribute(TypeName = "BCCDX.DistributionStatus", Namespace = "urn:bccdx.ca")]
public partial class BCCDXDistributionStatus
{
    [System.Xml.Serialization.XmlElementAttribute("receivedTime", Namespace = "urn:bccdx.ca", IsNullable = false)]
    public TS receivedTime { get; set; }
}

public class TS
{
    [XmlAttribute("value")]
    public DateTime Value { get; set; }
}

<RCMR_IN000030UV01 ITSVersion="1.0"
    xmlns="urn:hl7-org:v3"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <distributionStatus
        xmlns="urn:bccdx.ca">
        <receivedTime value="2017-02-23T00:00:00-05:00"/>
    </distributionStatus>
</RCMR_IN000030UV01>

当前，您的服务返回的XML如下所示：

[XmlRoot(ElementName = "RCMR_IN000030UV01", Namespace = "urn:hl7-org:v3")]
public partial class RCMR_IN000030UV01
{
    // The initially auto-generated code
    [XmlAttribute(AttributeName = "ITSVersion")]
    public string ITSVersion { get; set; }
}

public partial class RCMR_IN000030UV01
{
    // The added property
    [System.Xml.Serialization.XmlElementAttribute("distributionStatus", Namespace = "urn:bccdx.ca", IsNullable = false)]
    public BCCDXDistributionStatus distStatus { get; set; }
}

[System.Xml.Serialization.XmlTypeAttribute(TypeName = "BCCDX.DistributionStatus", Namespace = "urn:bccdx.ca")]
public partial class BCCDXDistributionStatus
{
    [System.Xml.Serialization.XmlElementAttribute("receivedTime", Namespace = "urn:bccdx.ca", IsNullable = false)]
    public TS receivedTime { get; set; }
}

public class TS
{
    [XmlAttribute("value")]
    public DateTime Value { get; set; }
}

<RCMR_IN000030UV01 ITSVersion="1.0"
    xmlns="urn:hl7-org:v3"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <distributionStatus
        xmlns="urn:bccdx.ca">
        <receivedTime value="2017-02-23T00:00:00-05:00"/>
    </distributionStatus>
</RCMR_IN000030UV01>

如中所述，此属性

指定目标属性、参数、返回值或类成员包含与XML文档中使用的名称空间关联的前缀

---

现在，您的服务应该根据需要返回根元素上带有名称空间的XML。

1）是否有任何方法可以将其扩展到一个或至少可以编译的对象，而不丢失类型？2） 您说您使用了

xsd.exe

来生成类，您是否在某处应用了

[XmlSerializerFormat]

？我没有在问题中看到它。谢谢，是的，我编辑了将

XmlSerializerFormat

添加到原始问题中。这是一个很好的答案，所有的假设都是完全正确的（我编辑了原始问题以包含

XmlSerializerFormat

声明）。我添加了建议的

[xmlnamespacesdeclarations]

属性，它成功了。我同意XML在这两种情况下都是正确的，但规范的一部分就是这样。