c# - 如何在Asp.net core 2.0中使用log4net

Question

我在我的 asp.net core 2.0 应用程序中配置了 log4net，如本文所述 LINK

程序.cs

public static void Main(string[] args)
{
    var logRepository = LogManager.GetRepository(Assembly.GetEntryAssembly());
    XmlConfigurator.Configure(logRepository, new FileInfo("log4net.config"));

    BuildWebHost(args).Run();
}

家庭 Controller

public class HomeController : Controller
{
    private static readonly log4net.ILog log = log4net.LogManager.GetLogger(typeof(HomeController));

    public IActionResult Error()
    {
        log.Info("Hello logging world!");
        return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
    }
}

log4net.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <log4net>
    <root>
      <level value="ALL" />
      <appender-ref ref="RollingFile" />
    </root>
    <appender name="RollingFile" type="log4net.Appender.FileAppender">
      <file value="‪C:\Temp\app.log" /> 
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%-5p %d{hh:mm:ss} %message%newline" />
      </layout>
    </appender>
  </log4net>
</configuration>

不幸的是，我没有在 C:\Temp\app.log 目录中看到任何生成的文件。会出现什么错误？如何为 asp.net core 2.0 配置 log4net？

Answer 1

There is a third-party log4net adapter for the ASP.NET Core logging interface.

您唯一需要做的就是将 ILoggerFactory 传递给您的 Startup 类，然后调用

loggerFactory.AddLog4Net();

并进行适当的配置。因此，您不必编写任何样板代码。

More info here