Question

我有一个带有多个参数的方法的WCF Rest服务：

[OperationContract]        
[WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest, RequestFormat = WebMessageFormat.Json)]
StatusMessage DoSomeWork(short myId, decimal latitude, decimal longitude, string someData);

在客户端序列化的JSON数据正确序列化，并且此方法接收该数据。问题是，longitude参数始终返回0，无论该序列化值是什么值。所有其他参数都正确反序列化。知道为什么会发生这种情况，以及可能的解决办法吗？

Answer 1

确保JSON对象中的属性名称与参数longitude的名称匹配。下面的代码显示了您的确切操作合同，并且服务正确接收了经度。

public class StackOverflow_23529686
{
    [ServiceContract]
    public class Service
    {
        [OperationContract]
        [WebInvoke(
            Method = "POST",
            BodyStyle = WebMessageBodyStyle.WrappedRequest, 
            RequestFormat = WebMessageFormat.Json)]
        public StatusMessage DoSomeWork(short myId, decimal latitude, decimal longitude, string someData)
        {
            return new StatusMessage
            {
                Text = string.Format("id={0}, lat={1}, lon={2}, data={3}", myId, latitude, longitude, someData)
            };
        }
    }
    public class StatusMessage
    {
        public string Text { get; set; }
    }
    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");

        WebClient c = new WebClient();
        c.Headers.Add(HttpRequestHeader.ContentType, "application/json");
        var json =
            "{'someData':'hello','longitude':-56.78,'latitude':12.34,'myId':1}"
            .Replace('\'', '\"');
        Console.WriteLine(c.UploadString(baseAddress + "/DoSomeWork", json));

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

WCF Rest Service每次都将值反序列化为0

1 个答案: