不能使用WCF REST服务的WCF客户端

Question

我有一个服务，并在命名空间中的相关型号的接口称为“WCFService”：

[ServiceContract] 
public interface IBook 
{ 
    [OperationContract] 
    [WebInvoke(Method="GET" 
     ,ResponseFormat=WebMessageFormat.Json 
     ,BodyStyle=WebMessageBodyStyle.Wrapped 
     ,UriTemplate="/?bookID={bookID}")] 
    Book Get(int bookID); 
} 

//======================================================== 

public Book Get(int bookID) 
{ 
    return bookList.Where(p => p.BookID == bookID).FirstOrDefault(); 
} 

和书的DataModel是下称“WCFModel”另一个命名空间：

[DataContract] 
public class Book 
{ 
    [DataMember] 
    public int BookID { get; set; } 

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

    [DataMember] 
    public decimal BookPrice { get; set; } 

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

设置配置文件后，我得到的服务运行正常。然后我打算在客户端使用它。我添加了一个Windows窗体应用程序的项目，并添加参考WCFModel书数据模型，我用下面的代码来提取数据：

string serviceURL = "http://localhost:15020/BookService.svc/?bookID=" + txtBookID.Text.Trim(); 
    var request = WebRequest.Create(serviceURL); 
    var response = request.GetResponse(); 
    DataContractSerializer serializer = new DataContractSerializer(typeof(WCFModel.Book)); 
    var bookObj = serializer.ReadObject(response.GetResponseStream()); 

但结果却是，VS抛出了我的异常，在利用readObject如下：

Error when deserializing the WCFModel.Book type, Data at the root level is invalid. 

堆栈跟踪如下：

在 System.Xml.XmlExceptionHelper.ThrowXmlException(XmlDictionaryReader reader, String res, String arg1, String arg2, String arg3) 
在 System.Xml.XmlUTF8TextReader.Read() 
在 System.Xml.XmlBaseReader.IsStartElement() 
在 System.Xml.XmlBaseReader.IsStartElement(XmlDictionaryString localName, XmlDictionaryString namespaceUri) 
在 System.Runtime.Serialization.XmlReaderDelegator.IsStartElement(XmlDictionaryString localname, XmlDictionaryString ns) 
在 System.Runtime.Serialization.XmlObjectSerializer.IsRootElement(XmlReaderDelegator reader, DataContract contract, XmlDictionaryString name, XmlDictionaryString ns) 
在 System.Runtime.Serialization.DataContractSerializer.InternalIsStartObject(XmlReaderDelegator reader) 
在 System.Runtime.Serialization.DataContractSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName, DataContractResolver dataContractResolver) 
在 System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver) 

我不知道为什么，搜索了很多之后，我仍然不能得到的地步。任何人都可以给我一些参考？谢谢。

Answer 1

我希望这可能适合你！ 尝试执行此操作！

WebClient proxy = new WebClient(); 
string serviceURL = 
     string.Format("http://localhost:15020/BookService.svc/?bookID=" + txtBookID.Text.Trim().ToString()); 
byte[] data = proxy.DownloadData(serviceURL); 
Stream stream = new MemoryStream(data); 
DataContractJsonSerializer obj = 
        new DataContractJsonSerializer(typeof(Book)); 
Book book = obj.ReadObject(stream) as Book; 
Console.WriteLine("Book ID : " + book.BookID); 
Console.WriteLine("Book Name : " + book.BookName); 
Console.WriteLine("Book ID : " + book.BookPrice); 
Console.WriteLine("Book ID : " + book.BookPublish); 

看到这个link

编辑：更改BodyStyle=WebMessageBodyStyle.Wrapped到BodyStyle=WebMessageBodyStyle.Bare。