Question

我有一个WCF服务，其中所有内容都是以编程方式启动的（并且需要继续这样做），我希望此服务能够响应[WebGet]属性。

但是，当我调用其中一个WCF方法时，该服务返回400 Bad Request。这最初似乎是WCF Service Returns 400 error when using WebGet或Bad Request 400 while accessing WCF Rest service (WebGet)的副本，但这两个解决方案都添加到web.config，这是我没有的文件，因为我需要以编程方式执行所有操作。

我试图将WebHttpBinding添加到看似端点的东西，但它无法正常工作（我可能没有以正确的方式进行）。

下面的代码启动没有错误，但当我尝试转到http://localhost:8765/MyService/MyTest时，我得到上述400 Bad Request

我错过了什么？

WCF启动器

MyService myService = new MyService();
ServiceHost host = new ServiceHost(myService, new Uri("http://localhost:8765/MyService"));
ServiceBehaviorAttribute behavior = host.Description.Behaviors.Find<ServiceBehaviorAttribute>();
behavior.InstanceContextMode = InstanceContextMode.Single;

foreach(ServiceEndpoint endpoint in host.Description.Endpoints) {
    endpoint.Binding = new WebHttpBinding();
}

host.Open();

服务界面

[ServiceContract]
public interface IMyService {
    [OperationContract]
    [WebGet]
    string MyTest();
}

服务实施

public class MyService : IMyService {
    public string MyTest() {
        return "Response from WCF service";
    }
}

Answer 1

我使用我编写的代码来初始化并从代码中完全启动我的WCF restful服务：

public static WebServiceHost InitializeAndStartWebServiceHost(int port, string endPointName, object serviceModel, Type implementedContractType) {
        var baseAddress = new Uri($"http://0.0.0.0:{port}/{endPointName}");
        WebServiceHost host;
        try {
            host = new WebServiceHost(serviceModel, baseAddress);
        } catch (Exception exception) {
            Debug.Print("Error when creating WebServiceHost, message: " + exception.Message);
            return null;
        }

        // ReSharper disable once UseObjectOrCollectionInitializer
        var binding = new WebHttpBinding();
        binding.UseDefaultWebProxy = false;
        binding.BypassProxyOnLocal = true;

        //By default, TransferMode is Buffered which causes C# wcf client to be slow as hell (>500ms for requests which give >2kB responses).
        //I am not exactly sure why this helps, but it helps!
        binding.TransferMode = TransferMode.Streamed;

        host.AddServiceEndpoint(implementedContractType, binding, "");
        var behavior = new WebHttpBehavior();
        behavior.HelpEnabled = false;
        behavior.DefaultBodyStyle = WebMessageBodyStyle.Bare;
        // We will use json format for all our messages.
        behavior.DefaultOutgoingRequestFormat = WebMessageFormat.Json;
        behavior.DefaultOutgoingResponseFormat = WebMessageFormat.Json;
        behavior.AutomaticFormatSelectionEnabled = false;
        behavior.FaultExceptionEnabled = true;


        host.Description.Endpoints[0].Behaviors.Add(behavior);

        try {
            host.Open();
        } catch (AddressAccessDeniedException) {
            Console.WriteLine(@"Application must run with administrator rights.");
            Console.ReadKey();
            Environment.Exit(0);
        }
        return host;
    }

使用WebGet的WCF服务不起作用

1 个答案: