无法从javascript访问应用程序中的WCF服务？ [英] WCF service hosed in application can't be accessed from javascript?

问题描述

我有一个启动WCF服务的控制台应用程序，我想使用javascript在html文件中访问它。

I have an console application which starts a WCF service, and I want to access it in an html file using javascript.

不想使用web。配置，因为它看起来太复杂了。我想稍后在一个应用程序的插件中托管该服务。 （但如果web.config符合我的要求，也可以使用它。）

Don't want to use web.config because it seems too complicated. and I want to host the service in an addon of an application later. (but if web.config meets my requirement, it is ok to use it too).

以下是服务代码：

  class Program
  {
     static void Main(string[] args)
     {
        Uri baseAddress = new Uri("http://localhost:8080");
        using (ServiceHost host = new ServiceHost(typeof(HelloWorldService), baseAddress))
        {
           host.Description.Behaviors.Add(new ServiceMetadataBehavior { HttpGetEnabled = true });
           host.AddServiceEndpoint(typeof(IHelloWorldService), new BasicHttpBinding(), "bh");
           host.AddServiceEndpoint(typeof(IHelloWorldService), new WebHttpBinding(WebHttpSecurityMode.None), "wb");
           host.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexHttpBinding(), "mex");
           host.Open();
           Console.WriteLine("The service is ready at {0}", baseAddress);
           Console.WriteLine("Press <Enter> to stop the service.");
           Console.ReadLine();
           host.Close();
        }
     }
  }

  [ServiceContract]
  public interface IHelloWorldService
  {
     [OperationContract]
     [WebGet(UriTemplate = "/SayHello?name={name}", ResponseFormat = WebMessageFormat.Json)]
     string SayHello(string name);
  }

  public class HelloWorldService : IHelloWorldService
  {
     public string SayHello(string name)
     {
        Console.WriteLine("called SayHello");
        return string.Format("Hello, {0}", name);
     }
  }

我想使用javascript来访问该服务单个html文件，例如index.html是这样的：

And I want to access the service using javascript from a single html file, e.g. index.html like this:

jQuery.post("http://localhost:8080/HelloWorldService.svc/wb/SayHello", {name:"kii"}, function(ret){alert(ret);}});

或者像这样：

jQuery.get("http://localhost:8080/HelloWorldService.svc/wb/SayHello?name=kii",  function(ret){alert(ret);}});

但它们不起作用。

POST方法得到404 Not Found
和
GET方法得到405方法不允许

"POST" method got "404 Not Found" and "GET" method got "405 Method Not Allowed"

有任何建议吗？

非常感谢~~

推荐答案

这里是修改后的程序您的参考。

here is the modified program for your reference.

class Program {
    static void Main(string[] args) {
        Uri baseAddress = new Uri("http://localhost:8080");
        using (ServiceHost host = new ServiceHost(
            typeof(HelloWorldService), baseAddress)) {

            host.Description.Behaviors.Add(
                new ServiceMetadataBehavior { HttpGetEnabled = true });
            host.AddServiceEndpoint(
                typeof(IHelloWorldService), new BasicHttpBinding(), "bh");

            var webEndPoint = host.AddServiceEndpoint(
                typeof(IHelloWorldService), 
                new WebHttpBinding(WebHttpSecurityMode.None), "wb");
            webEndPoint.Behaviors.Add(new WebHttpBehavior());

            host.AddServiceEndpoint(
                ServiceMetadataBehavior.MexContractName, 
                MetadataExchangeBindings.CreateMexHttpBinding(), "mex");
            host.Open();

            var n = 0;
            foreach (var endPoint in host.Description.Endpoints) {
                Console.WriteLine("endpoint " + n);
                Console.WriteLine(" address: " + endPoint.Address);
                Console.WriteLine(" absolute path: " + endPoint.ListenUri.AbsolutePath);
                Console.WriteLine(" absolute uri: " + endPoint.ListenUri.AbsoluteUri);
                n++;
            }
            Console.WriteLine();
            Console.WriteLine("The service is ready at {0}", baseAddress);
            Console.WriteLine("Press <Enter> to stop the service.");

            Console.ReadLine();             
        }
    }
}

唯一的实际区别是将WebHttpBehavior添加到Web端点。

The only actual difference is to add WebHttpBehavior into the web endpoint.

运行此程序，打开浏览器测试地址localhost：8080 / wb / sayhello？name = abc
如果浏览器返回abc，表示Web端点正常工作。
如果通过jQuery调用这个地址仍然无法正常工作，那么就在jQuery端进行故障排除。

running this program, and open brower to test address localhost:8080/wb/sayhello?name=abc if the brower returns "abc", that means the web end point is working. if calling this address by jQuery is still not working, then trouble-shooting on jQuery side.

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