C# api控制器中的多个HttpPost方法会导致500个内部服务器错误

在我的api控制器中有两个HttpPost方法，当我点击api时，我得到500个内部服务器错误

但令人惊讶的是，当我删除其中一个HttpPost方法时，我能够成功地点击我的api并检索到我想要的信息

知道有什么问题吗

这是两种方法

    [HttpPost]
    [ActionName("PostUser")]
    public HttpResponseMessage PostUser([FromBody]string id)
    {
        var accessToken = id;
        var client = new FacebookClient(accessToken);
        dynamic result = client.Get("me", new { fields = "name,email" });
        string name = result.name;
        string email = result.email;


        var existingUser = this.Repository.FindByUserIdentity(name);

        if (existingUser == null)
        {
            var newUser = new User
            {
                Username = name,
                Email = email,

            };

            var success = this.Repository.CreateAccount(newUser);

            if (!success)
            {
                return Request.CreateResponse(HttpStatusCode.InternalServerError);
            }

            //return created status code as we created the user
            return Request.CreateResponse<User>(HttpStatusCode.Created, newUser);
        }

        return Request.CreateResponse(HttpStatusCode.OK);

    }

    [HttpPost]
    [ActionName("PostEmail")]
    public HttpResponseMessage PostEmail([FromBody]string id)
    {
        var accessToken = id;
        var client = new FacebookClient(accessToken);
        dynamic result = client.Get("me", new { fields = "email" });
        string name = result.name;
        string email = result.email;


        var existingUser = this.Repository.FindByUserIdentity(name);

        if (existingUser == null)
        {
            var newUser = new User
            {                   
                Email = email

            };

            var success = this.Repository.CreateAccount(newUser);

            if (!success)
            {
                return Request.CreateResponse(HttpStatusCode.InternalServerError);
            }

            //return created status code as we created the user
            return Request.CreateResponse<User>(HttpStatusCode.Created, newUser);
        }

        return Request.CreateResponse(HttpStatusCode.OK);

    }

---

这是因为您的控制器中有两个Post方法，而covention WebApi只允许一个Post方法

要配置两个或多个Post方法，必须配置路由设置

有关详细信息，请查看以下答案

---

你能发布路线配置吗？@CuongLe发布了路线配置，非常感谢！！：我一整天都在为这事绞尽脑汁！！

public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Competition", action = "all", id = UrlParameter.Optional }
        );
    }