azure - 如何以及在何处在网络核心 Web 应用程序中设置 TelemetryClient？

Question

我希望使用与遥测客户端关联的 TrackTrace 方法。需要创建 TelemetryClient 的实例才能访问此方法。

TelemetryClient 可以在 Controller 的构造函数中初始化，但我想看看是否有更好的方法以及如何实现？

Answer 1

引自Microsoft Docs :

Get an instance of TelemetryClient by using constructor injection, and call the required TrackXXX() method on it. We don't recommend creating new TelemetryClient instances in an ASP.NET Core application.

A singleton instance of TelemetryClient is already registered in theDependencyInjection container, which shares TelemetryConfigurationwith rest of the telemetry. Creating a new TelemetryClient instance isrecommended only if it needs a configuration that's separate from therest of the telemetry.

所以你可以将它注入(inject)到任何你需要的地方，如下所示:

using Microsoft.ApplicationInsights;

public class HomeController : Controller
{
    private TelemetryClient telemetry;

    // Use constructor injection to get a TelemetryClient instance.
    public HomeController(TelemetryClient telemetry)
    {
        this.telemetry = telemetry;
    }

    public IActionResult Index()
    {
        // Call the required TrackXXX method.
        this.telemetry.TrackEvent("HomePageRequested");
        return View();
    }