我正在使用Angular 2和ASP.NET Core与SignalR。
我的错误如下所示：
XMLHttpRequest无法加载http：//localhost：55916/signalr//signalr/negotiate？clientProtocol=1.5&connectionData=%5B%7B%22name%22%3A%22event%22%7D%5D&_=1486394845411。当请求的凭据模式为“include”时，响应中“Access-Control-Allow-Origin”标头的值不能为通配符“*”。因此，不允许访问源“http：//localhost：8080”。XMLHttpRequest发起的请求的凭据模式由withCredentials属性控制。
下面是我的app配置：

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            var signingKey = new SymmetricSecurityKey(Encoding.ASCII.GetBytes(Configuration["data:secretKey"]));

            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();
                        

            app.UseCors(config =>
                 config.AllowAnyHeader().AllowAnyMethod().AllowAnyOrigin());

            app.UseWebSockets();
            app.UseSignalR("/signalr");

            app.UseMvc();
        }

Angular 2 SignalR服务

constructor(){
 //setups...

  this.connection = $.hubConnection(this.baseUrl + 'signalr/');
    this.proxy = this.connection.createHubProxy(this.proxyName);

    this.registerOnServerEvents();

    this.startConnection();
}

注册服务器事件：

private registerOnServerEvents(): void {
        this.proxy.on('FoodAdded', (data: any) => {
            debugger;
            this.foodchanged.emit(data);
        });

        this.proxy.on('FoodDeleted', (data: any) => {
            debugger;
            this.foodchanged.emit('this could be data');
        });

        this.proxy.on('FoodUpdated', (data: any) => {
            debugger;
            this.foodchanged.emit('this could be data');
        });

        this.proxy.on('SendMessage', (data: ChatMessage) => {
            debugger;
            console.log('received in SignalRService: ' + JSON.stringify(data));
            this.messageReceived.emit(data);
        });

        this.proxy.on('newCpuValue', (data: number) => {
            debugger;
            this.newCpuValue.emit(data);
        });
    }

错误从开头开始。