Question

我用一个非常基本的字符串测试这个信号。但是客户端没有触发服务器代码并且没有错误。我添加了[HubName("MyHub1")]和[HubMethodName("GetValueString")]，因为如果不是，则javascript会投诉客户端取消定义并且找不到方法名称。

在我添加了这个2元之后。没有错误，但服务器代码并不是火。任何人都可以帮忙。

客户端脚本

(function () {
    // Defining a connection to the server hub.
    debugger
    var myHub = $.connection.MyHub1;
    // Setting logging to true so that we can see whats happening in the browser console log. [OPTIONAL]
    $.connection.hub.logging = true;
    // Start the hub
    $.connection.hub.start();

    // This is the client method which is being called inside the MyHub constructor method every 3 seconds
    myHub.client.GetValueString = function (serverTime) {
        // Set the received serverTime in the span to show in browser
        $("#newTime").html(serverTime);
    };
}());

服务器脚本

[HubName("MyHub1")]
public class MyHub1 : Hub
{
    public void Hello()
    {
        Clients.All.hello();
    }
    [HubMethodName("GetValueString")]
    public void Getstring() {
        var taskTimer = Task.Factory.StartNew(async () =>
        {
            while (true)
            {
                string timeNow = DateTime.Now.ToString();
                //Sending the server time to all the connected clients on the client method ()
                Clients.All.GetValueString("test");
                //Delaying by 3 seconds.
                await Task.Delay(3000);
            }
        }, TaskCreationOptions.LongRunning
          );


    }
}

更新1 所以我将我的javascript改为此，输出为＃34; undefine＆＃34;但也没有错误

var haha = myHub.client.GetValueString; //在span中设置接收的serverTime以在浏览器中显示

Answer 1

尝试给予此信息。另外，使用this作为参考

我已添加console.log尝试，看看您在运行此代码时是否看到它。

(function () {

    var myHub = $.connection.MyHub1;

    myHub.client.GetValueString = function (serverTime) {

        $("#newTime").html(serverTime);
    };

    $.connection.hub.logging = true;

    $.connection.hub.start().done(function() {
        console.log("hub is ready"); // tell me if you see the message in your console log
        myHub.server.getstring() // note i wrote getstring with a small g, has to be.
    });


}());

[HubName("MyHub1")]
public class MyHub1 : Hub
{
    public void Hello()
    {
        Clients.All.hello();
    }

    public void Getstring() {
        var taskTimer = Task.Factory.StartNew(async () =>
        {
            while (true)
            {
                string timeNow = DateTime.Now.ToString();
                //Sending the server time to all the connected clients on the client method ()
                Clients.All.GetValueString("test");
                //Delaying by 3 seconds.
                await Task.Delay(3000);
            }
        }, TaskCreationOptions.LongRunning
          );


    }
}

SignalR客户端没有触发服务器代码

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