.NET Core如何使用NLog

1.新建ASP.NET Core项目

1.1选择项目

1.2选择.Net版本

2. 添加NLog插件

2.1 通过Nuget安装

2.2下载相关的插件

3.修改NLog配置文件

3.1添加NLog配置文件

3.2修改NLog.config配置文件

配置文件全部内容：

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      autoReload="true"
      internalLogLevel="Warn"
      internalLogFile="internal-nlog.txt">
  <!--define various log targets-->
  <targets>
    <target name="file" xsi:type="AsyncWrapper" queueLimit="5000" overflowAction="Discard">
      <target xsi:type="File" fileName="${basedir}/logs/${shortdate}.txt" layout="${longdate} ${level:uppercase=true} ${event-context:item=Action} ${message} ${event-context:item=Amount} ${stacktrace}" />
    </target>
  </targets>
  <rules>
    <logger name="*" minlevel="Info" writeTo="file" />
  </rules>

</nlog>

重点内容：

<targets>
    <target xsi:type="File" name="LogFile" fileName="${basedir}/logs/${shortdate}-${level}.txt"
                 layout="${longdate}|${uppercase:${level}}|${message} ${exception}" />
  </targets>
  <rules>
    <logger name="*" minlevel="Debug" writeTo="LogFile" />
  </rules>

3.3修改StartUp.cs文件

 1     public void Configure(IApplicationBuilder app, IHostingEnvironment env,ILoggerFactory loggerFactory)
 2     {
 3         /*使用NLog*/
 4         loggerFactory.AddNLog();
 5         env.ConfigureNLog("NLog.config");
 6
 7         app.UseStaticFiles();
 8
 9         app.UseMvc(routes =>
10         {
11             routes.MapRoute(
12                 name: "default",
13                 template: "{controller=Home}/{action=Index}/{id?}");
14         });
15     }

4使用NLog

static Logger logger = LogManager.GetCurrentClassLogger();
....
logger.Info("NLog日志测试" + DateTime.Now);