asp.net - WCF RESTful JSON Web 服务发布对象的嵌套列表

Question

我正在开发一个接受 JSON 参数的 WCF 服务。我不知道我哪里出了问题。请帮忙。

当我使用 fiddler 测试服务时，我发布以下内容:

"locations": {
        "Departments": [{
            "Name": "Amazonas",
            "alias": "",
            "Municipalities": [{
                "Name": "El Encanto"
            }, {
                "Name": "La Chorrera"
            }]

        }]
    }

我收到 400 错误:“服务器在处理请求时遇到错误。异常消息是“OperationFormatter 遇到无效的消息正文。期望找到名称为“type”、值为“object”的属性。找到值'字符串'。'。有关更多详细信息，请参阅服务器日志。”

堆栈跟踪是:

    at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)
   at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters)
   at System.ServiceModel.Dispatcher.DemultiplexingDispatchMessageFormatter.DeserializeRequest(Message message, Object[] parameters)
   at System.ServiceModel.Dispatcher.UriTemplateDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)
   at System.ServiceModel.Dispatcher.CompositeDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

这是契约(Contract):

 [OperationContract(Name = "setFacilities")]
    [WebInvoke(
        Method = "POST",
        BodyStyle = WebMessageBodyStyle.WrappedRequest,
        ResponseFormat = WebMessageFormat.Json,
        RequestFormat = WebMessageFormat.Json,
        UriTemplate = "/setFacilities")]
    string SetFacilities(LocationData locations);

[更新]

这是 LocationData 类

    [Serializable]
public class LocationData
{
    public IList<Department> Departments;
}

[Serializable]
public class Department
{
    public string Name;
    public string Alias;
    public IList<Municipality> Municipalities;
}

[Serializable]
public class Municipality
{
    public string Name;
}

我错过了什么？

Answer 1

问题出在你的 JSON 上。

您尚未共享 LocationData 类，因此我无法告诉您它必须是什么样子，但您的 JSON 需要用括号括起来:

{
    "locations": {
        "Departments": [{
            "Name": "Amazonas",
            "alias": "",
            "Municipalities": [{
                "Name": "El Encanto"
            }, {
                "Name": "La Chorrera"
            }]

        }]
    }
}

我猜 LocationData 实际上是有 Departments 的数据，所以我认为 "locations": 是多余的:

{

    "Departments": [{
        "Name": "Amazonas",
        "alias": "",
        "Municipalities": [{
            "Name": "El Encanto"
        }, {
            "Name": "La Chorrera"
        }]

    }]
}