WCF MessageContract包装和列表

时间:2012-12-06 08:36:00

标签: c# wcf web-services xsd messagecontract

我收到了客户关于他们的网络服务客户端如何工作的规范。规范是从服务发送和接收的实际SOAP XML消息以及相应的XSD。客户希望我实施符合客户的Web服务。客户端使用axis2 ws-stack编写,我想要做的是在WCF中创建一个Web服务,它将接受客户端发出的请求并返回符合他们期望的XML的响应。在这个问题中,我只会发布与请求相关的XML和XSD,因为如果我可以使用它,响应将以类似的方式进行。

我收到的XML如下:

POST /axis2/services/SampleService HTTP/1.1
Content-Type: text/xml; charset=UTF-8
SOAPAction: "sendCommand"
User-Agent: Axis2
Host: 127.0.0.1:7777
Content-Length: 347
<?xml version='1.0' encoding='UTF-8'?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> 
   <soapenv:Body> 
      <SendCommandRequest xmlns="http://something.org/"> 
         <CMD> 
            <Station Address="ABC"> 
               <Platform Address="DEF"> 
                  <Command>5</Command> 
               </Platform> 
             </Station> 
         </CMD> 
       </SendCommandRequest> 
    </soapenv:Body>
</soapenv:Envelope>

这是相应的XSD的样子:

<xsd:complexType name="SendCommandRequestType"> 
    <xsd:sequence>  
        <xsd:element name="Station"> 
            <xsd:complexType> 
                <xsd:attribute name="Address" type="xsd:string" use="required" /> 
                <xsd:sequence> 
                    <xsd:element minOccurs="0" maxOccurs="1" name="Platform"> 
                        <xsd:complexType> 
                            <xsd:attribute name="Address" type="xsd:string" use="required" /> 
                            <xsd:sequence> 
                                <xsd:element name="Command"> 
                                    <xsd:simpleType> 
                                        <xsd:restriction base="xsd:string"> 
                                            <xsd:enumeration value="-1"/> 
                                            <xsd:enumeration value="0"/> 
                                            <xsd:enumeration value="1"/> 
                                            <xsd:enumeration value="2"/> 
                                            <xsd:enumeration value="3"/> 
                                            <xsd:enumeration value="4"/> 
                                            <xsd:enumeration value="5"/> 
                                        </xsd:restriction> 
                                    </xsd:simpleType> 
                                </xsd:element> 
                            </xsd:sequence> 
                        </xsd:complexType> 
                    </xsd:element> 
                </xsd:sequence> 
            <xsd:complexType>
        </xsd:element>
    </xsd:sequence>
</xsd:complexType>

我已经开始用WCF / MessageContract格式编写类型了,但是我在列表等方面遇到了困难,因为它们是双重包装的。

我的MessageContracts看起来像这样:

[MessageContract(WrapperName = "SendCommandRequest", WrapperNamespace = "http://something.org/")]
public class SendCommandRequest
{
    [MessageBodyMember(Name="CMD")]
    public CMD cmd = new CMD();
}

[MessageContract(IsWrapped=false)]
public class CMD
{
    [MessageBodyMember(Name="Station")]
    public List<Station> stations = new List<Station>();
}

[MessageContract(IsWrapped=false)]
public class Station
{

    [MessageBodyMember]
    public List<Platform> platforms = new List<Platform>();
    [MessageBodyMember(Name="Address")]
    public String Address; 
}

[MessageContract(WrapperName = "Platform")]
public class Platform
{
    [MessageBodyMember(Name = "Address")]
    public String Address;
}

当我使用SoapUI时,我从网络服务获得以下响应:

 <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Body>
      <SendCommandRequest xmlns="http://ttraflinariawebservice.org/">
         <CMD xmlns="http://tempuri.org/" xmlns:a="http://schemas.datacontract.org/2004/07/GeldImport" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
            <a:stations>
               <a:Station>
                  <a:Address>test</a:Address>
                  <a:platforms>
                     <a:Platform>
                        <a:Address>b</a:Address>
                     </a:Platform>
                  </a:platforms>
               </a:Station>
            </a:stations>
         </CMD>
      </SendCommandRequest>
   </s:Body>
</s:Envelope>

正如您所看到的,它不符合客户期望的XML格式。如何让MessageContract符合客户期望的XML?我不知何故需要使Lists不像它们那样进行双重包装,并且类的属性似乎被添加到类名中。

如果您希望我提供更多信息和代码,我可以这样做。不想用可能与问题无关的事情填写整个帖子。

编辑:

提供的XSD文件格式不正确。为了解决这个问题,我从提供的XML文件中重新生成了一个XSD。然后我使用WSCF.blue工具为XSD生成数据协定代码。

我进行了更改,以便服务合同使用doc litteral格式符合axis2 soap1.1

[XmlSerializerFormat(Use = OperationFormatUse.Literal, Style = OperationFormatStyle.Document, SupportFaults = true)]
[ServiceContract]
public interface MyService

我还更改了操作契约,将System.ServiceModel.Channels.Message作为输入和输出消息,然后使用生成的类(我从XSD生成)手动序列化和反序列化xml。

1 个答案:

答案 0 :(得分:4)

您最初尝试的原因是您尝试使用[MessageContract]类来定义消息的数据合同(架构)。消息契约仅用作最顶层的类(用于定义消息头中的内容以及进入正文的内容)。其他类需要使用您正在使用的任何序列化程序的属性(并且由于您具有XML属性,因此您需要使用XmlSerializer)。下面的代码显示了如何使对象模型符合您提供的模式。您可以使用Fiddler等工具查看它发送的请求。

public class StackOverflow_13739729
{
    [ServiceContract(Namespace = "http://something.org")]
    public interface ITest
    {
        [XmlSerializerFormat, OperationContract(Name = "sendCommand")]
        void SendCommand(SendCommandRequest req);
    }

    public class Service : ITest
    {
        public void SendCommand(SendCommandRequest req)
        {
            Console.WriteLine("In service");
        }
    }

    [MessageContract(WrapperName = "SendCommandRequest", WrapperNamespace = "http://something.org")]
    public class SendCommandRequest
    {
        [MessageBodyMember]
        public CMD CMD { get; set; }
    }

    [XmlType]
    public class CMD
    {
        [XmlElement]
        public Station Station { get; set; }
    }

    public class Station
    {
        [XmlAttribute]
        public string Address { get; set; }

        [XmlElement]
        public Platform Platform { get; set; }
    }

    public class Platform
    {
        string[] validCommands = new[] { "-1", "0", "1", "2", "3", "4", "5" };
        string[] command;

        [XmlAttribute]
        public string Address { get; set; }

        [XmlElement]
        public string[] Command
        {
            get { return this.command; }
            set
            {
                if (value != null)
                {
                    if (!value.All(c => validCommands.Contains(c)))
                    {
                        throw new ArgumentException("Invalid command");
                    }
                }

                this.command = value;
            }
        }
    }

    public static void Test()
    {
        string baseAddress = "http://" + Environment.MachineName + ":8000/Service";
        ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddress));
        host.AddServiceEndpoint(typeof(ITest), new BasicHttpBinding(), "");
        host.Open();
        Console.WriteLine("Host opened");

        ChannelFactory<ITest> factory = new ChannelFactory<ITest>(new BasicHttpBinding(), new EndpointAddress(baseAddress));
        ITest proxy = factory.CreateChannel();

        SendCommandRequest req = new SendCommandRequest
        {
            CMD = new CMD
            {
                Station = new Station
                {
                    Address = "ABC",
                    Platform = new Platform
                    {
                        Address = "DEF",
                        Command = new string[] { "5" }
                    }
                }
            }
        };

        proxy.SendCommand(req);

        ((IClientChannel)proxy).Close();
        factory.Close();

        Console.Write("Press ENTER to close the host");
        Console.ReadLine();
        host.Close();
    }
}