下面是一个基于Abp框架实现通知和SignalR的简单示例：

1. 创建一个新的Abp项目，并添加以下NuGet包：

• Abp.AspNetCore.SignalR
• Microsoft.AspNetCore.SignalR
• Microsoft.AspNetCore.SignalR.Core

2. 在Startup.cs文件中进行配置：

public void ConfigureServices(IServiceCollection services)
{
    services.AddSignalR();
    
    // 注册Abp模块
    services.AddAbp(options =>
    {
        // 配置通知
        options.Notifications.Providers.Add(); 
    });
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseAbp(); // 使用Abp中间件
    
    app.UseSignalR(routes =>
    {
        routes.MapHub("/signalr"); // 配置SignalR
    });
}

3. 创建一个通知应用服务：

public class MyNotificationAppService : ApplicationService, IMyNotificationAppService
{
    private readonly INotificationPublisher _notificationPublisher;

    public MyNotificationAppService(INotificationPublisher notificationPublisher)
    {
        _notificationPublisher = notificationPublisher;
    }

    public async Task PublishNotification(string message)
    {
        await _notificationPublisher.PublishAsync("MyNotification", new MyNotificationData { Message = message });
    }
}

4. 创建一个JS客户端：

var connection = new signalR.HubConnectionBuilder()
    .withUrl("/signalr") // 根据配置的SignalR路由修改URL
    .build();

connection.on("MyNotification", function (message) {
    console.log("Received notification: " + message);
});

connection.start().then(function () {
    console.log("SignalR connected");
}).catch(function (err) {
    console.error(err.toString());
});

5. 在需要发送通知的地方使用通知应用服务：

private readonly IMyNotificationAppService _notificationAppService;

public MyClass(IMyNotificationAppService notificationAppService)
{
    _notificationAppService = notificationAppService;
}

public async Task SendNotification()
{
    await _notificationAppService.PublishNotification("Hello from Abp");
}

这样，当SendNotification方法被调用时，JS客户端将会收到一个名为"MyNotification"的通知，并打印出消息内容。