3

我正在尝试将 WCF 服务与原始消息一起使用。

1）WCF服务代码：

[DataContract]
public class Person
{
    [DataMember]
    public int Id { get; set; }

    [DataMember]
    public string FirstName { get; set; }

    [DataMember]
    public string LastName { get; set; }
}

public static List<Person> CreateEmployees()
{
    List<Person> lstPersons = new List<Person>()
    {
        new Person { Id = 1, FirstName = "Andrey", LastName = "Andreyev" },
        new Person { Id = 2, FirstName = "Sergey", LastName = "Sergeyev" }
    };

    return lstPersons;
}

[ServiceContract]
public interface ITestService
{
    [OperationContract(Action = TestService.RequestAction, ReplyAction = TestService.ReplyAction)]
    Message GetPersonById(Message id);
}

public class TestService : ITestService
{
    public const String ReplyAction = "http://localhost:4249/Message_ReplyAction";
    public const String RequestAction = "http://localhost:4249/Message_RequestAction";

    public Message GetPersonById(Message id)
    {
        string firstName = Employees.CreateEmployees().First(e => e.Id == id.GetBody<int>()).FirstName;
        Message response = Message.CreateMessage(id.Version, ReplyAction, firstName);
        return response;
    }
}

2）客户端代码：

static void Main(string[] args)
{
    TestServiceClient client = new TestServiceClient();
    String RequestAction = "http://localhost:4249/Message_RequestAction";
    int value = 1;
    Message request = Message.CreateMessage(MessageVersion.Default, RequestAction, value);
    Message reply = client.GetPersonById(request);
    string firstName = reply.GetBody<string>();

    Console.WriteLine(firstName);
    client.Close();
}

当我运行客户端时： int value = 1 一切正常。但是，当我使用：int value = 2 时，出现以下错误：

System.Runtime.Serialization.SerializationException 未处理 Message="第 1 行位置 276 中的错误。期望来自命名空间的元素“字符串”' http://schemas.microsoft.com/2003/10/Serialization/ '.. 遇到'元素'名称为“故障”，命名空间“ http://www.w3.org/2003/05/soap-envelope'。" Source="System.Runtime.Serialization" StackTrace: 在 System.Runtime.Serialization.DataContractSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName) 在 System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName) 在 System.Runtime .Serialization.XmlObjectSerializer.ReadObject(XmlDictionaryReader reader) at System.ServiceModel.Channels.Message.GetBody[T](XmlObjectSerializer serializer) at System.ServiceModel.Channels.Message.GetBodyT at ClientTestService.Program.Main(String[] args) in E:\Projekti\WCF\Parus\ClientTestService\ClientTestService\Program.cs:System.AppDomain 的第 22 行。_nExecuteAssembly(Assembly 程序集，String[] args) 在 System.AppDomain。

在线：

string firstName = reply.GetBody<string>();

服务已启动，我在 VS2008 中通过“添加服务引用...”添加了服务引用。我使用 .NET Framework 3.5。

我不确定为什么会收到此错误。

当我不使用 Message 类时，一切正常。我的意思是：

[ServiceContract]
public interface ITestService
{
    [OperationContract]
    Person GetPersonById(int id);
}

public class TestService : ITestService
{
    public Person GetPersonById(int id)
    {
        Person person = Employees.CreateEmployees().First(e => e.Id == id);
        return person;
    }
}

2）客户端代码：

static void Main(string[] args)
{
    TestServiceClient client = new TestServiceClient();
    int value = 1;
    Person person = client.GetPersonById(value);

    Console.WriteLine(person.FirstName);
    client.Close();
}

如果有人可以提供帮助，我将非常感激。

4

1 回答 1

1 
Message reply = client.GetPersonById(request); 
if(reply.IsFault)
  throw new GoransException(reply.toString());
string firstName = reply.GetBody<string>();
//...
于 2012-10-11T07:22:15.713 回答