将NLog连接并注入到.NET Core控制台应用程序中

编程入门行业动态更新时间:2024-10-18 16:52:57

本文介绍了将NLog连接并注入到.NET Core控制台应用程序中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述

我创建了一个消费者/职位，该职位/职位将在用C#编写的Linux上作为一个进程运行.

I created a consumer/job that I will have running as a process on Linux written in C#.

该过程将:

从RabbitMQ阅读消息

对数据库进行更改

记录所有错误

NLog上有关.NET Core的所有文档均位于ASP.NET Core上.当我尝试获取 ILogger 实现时，它返回null.

All the documentation on NLog about .NET Core are on ASP.NET Core. When I try to get an ILogger implementation, it returns null.

这里是接线和用法的例外:

Here is an except of wiring and usage:

static void ConfigureServices() { string environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"); var builder = new ConfigurationBuilder() .SetBasePath(Path.Combine(AppContext.BaseDirectory)) .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true) .AddJsonFile($"appsettings.{environment}.json", optional: true); var services = new ServiceCollection(); Configuration = builder.Build(); [...] services.AddLogging(); ServiceProvider = services.BuildServiceProvider(); var loggerFactory = ServiceProvider.GetService<ILoggerFactory>(); loggerFactory.AddNLog(); } static void Main(string[] args) { ConfigureServices(); var logger = ServiceProvider.GetService<NLog.ILogger>(); logger.Debug("Logging"); [...] }

不要与环境变量 ASPNETCORE_ENVIRONMENT 混淆；它仅用于确定要使用哪个 appsettings.json .

Do not be confused with the environment variable ASPNETCORE_ENVIRONMENT; it is used solely to determine which appsettings.json to use.

我的代码基于此问题报告.

最后，这些是我目前已安装的软件包.

Finally, these are the packages I currently have installed.

推荐答案

.NET Core 1控制台应用程序中基于NLog的完整简约示例(基于 NLog.Extensions.Logging 存储库):

A complete minimalistic example of NLog in a .NET Core 1 console app (based on NLog.Extensions.Logging repository):

var services = new ServiceCollection(); services.AddLogging(); var provider = services.BuildServiceProvider(); var factory = provider.GetService<ILoggerFactory>(); factory.AddNLog(); factory.ConfigureNLog("nlog.config"); var logger = provider.GetService<ILogger<Program>>(); logger.LogCritical("hello nlog");

参考文献:

nlog.config:

<?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="www.nlog-project/schemas/NLog.xsd" xmlns:xsi="www.w3/2001/XMLSchema-instance" internalLogFile="internal-nlog.txt"> <variable name="Layout" value="${longdate}|${level:uppercase=true}|${logger}|${message}"/>  <targets>  <target xsi:type="File" name="allfile" fileName="nlog-all-${shortdate}.log" layout="${Layout}" />  <target xsi:type="Null" name="blackhole" /> </targets>  <rules>  <logger name="*" minlevel="Trace" writeTo="allfile" />  <logger name="Microsoft.*" minlevel="Trace" writeTo="blackhole" final="true" /> </rules> </nlog>

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将NLog连接并注入到.NET Core控制台应用程序中

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