CollectionDataContract到用于消耗JSON数组

Question

假设有此JSON由服务产生：

[{"key1": 12, "key2": "ab"}, {"key1": 10, "key2": "bc"}] 

是这可能通过WCF其余进行检索和使用CollectionDataContract解析为一个列表然后再次自动地与DataContract解析？

我试图这样做，但总是给人“根级别无效，1号线，位置1”

Answer 1

没有什么特别之处[CDC]和JSON - 它应该只是工作 - 看下面的代码。尝试将其与您的网站进行比较，包括网络跟踪（如Fiddler等工具中所见），并查看有何不同。

public class StackOverflow_15343502 
{ 
    const string JSON = "[{\"key1\": 12, \"key2\": \"ab\"}, {\"key1\": 10, \"key2\": \"bc\"}]"; 
    public class MyDC 
    { 
     public int key1 { get; set; } 
     public string key2 { get; set; } 

     public override string ToString() 
     { 
      return string.Format("[key1={0},key2={1}]", key1, key2); 
     } 
    } 

    [CollectionDataContract] 
    public class MyCDC : List<MyDC> { } 

    [ServiceContract] 
    public class Service 
    { 
     [WebGet] 
     public Stream GetData() 
     { 
      WebOperationContext.Current.OutgoingResponse.ContentType = "application/json"; 
      return new MemoryStream(Encoding.UTF8.GetBytes(JSON)); 
     } 
    } 

    [ServiceContract] 
    public interface ITest 
    { 
     [WebGet(ResponseFormat = WebMessageFormat.Json)] 
     MyCDC GetData(); 
    } 

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

     WebChannelFactory<ITest> factory = new WebChannelFactory<ITest>(new Uri(baseAddress)); 
     ITest proxy = factory.CreateChannel(); 
     var result = proxy.GetData(); 
     Console.WriteLine(string.Join(", ", result)); 
     ((IClientChannel)proxy).Close(); 
     factory.Close(); 

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