使用NLog进行依赖注入 [英] Dependency Injection With NLog

问题描述

我有一个.Net核心Web应用程序，我正在尝试通过NLog向其中添加日志记录. 在以前的项目中，我只是在每堂课的顶部使用以下内容:

I've got a .Net core web app that I'm trying to add logging to via NLog. In previous projects, I've just used something like the following at the top of every class:

private static Logger logger = LogManager.GetCurrentClassLogger();

在可能的情况下，我试图在该项目中遵循更多的最佳实践.

I've trying to follow more best practices with this project where possible.

我的问题是，我该如何注入一个记录器，该记录器具有要注入的类的完全限定名称?

My question is, how can I inject a logger which has the fully qualified name of the class that it's being injected into?

到目前为止，在我的startup.cs文件中，我具有以下内容:

In my startup.cs file, so far I've got the following:

services.AddScoped<BLL.Logging.NLogLogger>();

此刻，NLogLogger类通过GetCurrentClassLogger()创建一个NLog Logger的实例，该实例使用时将仅报告名称为"BLL.Logging.NLogLogger"，而不是记录器所使用的实际类.被注入.

At the moment, the NLogLogger class creates an instance of an NLog Logger via GetCurrentClassLogger(), which when used will only ever report the name as "BLL.Logging.NLogLogger" rather than the actual class that the logger is being injected into.

为简化问题并使之更加通用: 如何传递.Net Core将注入类的类的名称?

To simplify the question and make it a big more generic: How can you pass in the name of the class that .Net Core is going to inject a class into?

我已经考虑过类似以下的内容，但不确定如何实现:

I've thought about something like the below, but not sure how to achieve it:

services.AddScoped<BLL.Logging.NLogLogger>(serviceProvider => new BLL.Logging.NLogLogger("class name here"));

推荐答案

使用DI指定ILogger<T>类型而不是Logger，其中T是使用记录器的类类型，因此NLog会知道该类.例如:

Using DI specify ILogger<T> type instead of Logger, where T is the class type that uses the logger, so NLog will know about the class. For example:

public class TodoController : Controller
{
    private readonly ILogger _logger;

    public TodoController(ILogger<TodoController> logger)
    {
        _logger = logger;
    }
}

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