调用restful wcf web服务错误请求

Question

我的restful wcf Web服务是用Visual Studio 2010编写的。

这是Service1.svc.cs中的代码

namespace ContactRegistration
{
    public class Service1 : IService1
    {
        public string JSONDataPost(Contact ContactObject)
        {   
            //code to put the data in the database goes here
            //we'll pretend it all went okay and return
            return "0|Data added okay";
        }
    }
}

这是IService1.cs中的代码

namespace ContactRegistration
{
    [ServiceContract]
    public interface IService1
    {

        [OperationContract]
        [WebInvoke(Method = "POST",
            UriTemplate = "/JSONDataPost",
            RequestFormat = WebMessageFormat.Json,
            ResponseFormat = WebMessageFormat.Json)]
        string JSONDataPost(Contact ContactObject);
    }

    [DataContract]
    public class Contact
    {
        [DataMember]
        public string Organisation { get; set; }

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

        public Contact(string organisation, string firstName)
        {
            this.Organisation = organisation;
            this.FirstName = firstName;
        }
    }
}

这是网络配置。

<configuration>
<system.web>
    <compilation debug="true" targetFramework="4.0" />
</system.web>
<system.serviceModel>
    <services>
        <service behaviorConfiguration="ContactRegistration.Service1Behavior"
          name="ContactRegistration.Service1">
            <endpoint address="" binding="webHttpBinding"
              contract="ContactRegistration.IService1" behaviorConfiguration="web">
            </endpoint>
        </service>
    </services>
    <behaviors>
        <serviceBehaviors>
            <behavior name="ContactRegistration.Service1Behavior">
                <serviceMetadata httpGetEnabled="false" />
                <serviceDebug includeExceptionDetailInFaults="false" />
            </behavior>
        </serviceBehaviors>
        <endpointBehaviors>
            <behavior name="web">
                <webHttp/>
            </behavior>
        </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
</system.serviceModel>
<system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
</system.webServer>

当我从Web应用程序调用Web服务时，我使用的URI是：

Uri地址=新的Uri（“http://www.myserver/ContactRegistration/Service1.svc/JSONDataPost”）;

我收到了来自服务器的错误请求400。

[OperationContract]是否正确写入？ URITemplate有什么问题吗？我今天看了几十个例子，他们似乎将URITemplate作为'/ NameOfMethod'就是我所做的。

编辑：用于显示调用方式开始的代码     Uri地址=新的Uri（“http://www.myserver/ContactRegistration/Service1.svc/JSONDataPost”）;

    // Create the web request  
    HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;

    // Set type to POST  
    request.Method = "POST";
    request.ContentType = "application/json; charset=utf-8";

    // Create the data we want to send  
    Contact myContact = new Contact();
    myContact.Organisation = "Society of Fruit Flies";
    myContact.FirstName = "Fred";