NetCore3.1引入Nlog

十年河东，十年河西，莫欺少年穷

学无止境，精益求精

Net6引入Nlog请参考：https://www.cnblogs.com/chenwolong/p/nlog.html

项目引入：

      <PackageReference Include="NLog" Version="5.0.0" />
      <PackageReference Include="NLog.Extensions.Logging" Version="5.0.0" />
      <PackageReference Include="NLog.Web.AspNetCore" Version="5.0.0" />
      <PackageReference Include="Microsoft.Extensions.Logging" Version="3.1.31" />

增加 nlog.config 配置文件

<?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="Info"
      internalLogFile="logs/internal-nlog-AspNetCore.txt">

    <!-- enable asp.net core layout renderers -->
    <extensions>
        <add assembly="NLog.Web.AspNetCore"/>
    </extensions>

    <!-- the targets to write to -->
    <targets>

        <target xsi:type="File" name="ownFile-web" fileName="logs/logweb-${shortdate}.log"
                layout="${longdate}|${event-properties:item=EventId_Id:whenEmpty=0}|${level:uppercase=true}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}|${callsite}" archiveAboveSize="100000" maxArchiveFiles="30" />
    </targets>

    <!-- rules to map from logger name to target -->
    <rules>
        <logger name="*" minlevel="Error" writeTo="ownFile-web" />
    </rules>
</nlog>

注入Nlog

            services.AddLogging(log => { log.AddConsole(); log.AddNLog(); log.SetMinimumLevel(LogLevel.Error); });

测试Nlog

        private readonly ILogger<LoginController> logger;
        private readonly ITokenService _Service; /// <summary>
        /// 构造函数注入
        /// </summary>
        /// <param name="service"></param>
        public LoginController(ITokenService service,   ILogger<LoginController> logger)
        {
            _Service = service; this.logger = logger;
        }
        /// <summary>
        /// SSO 对接接口
        /// </summary>
        /// <returns></returns>
        [HttpPost]
        [Route("JwtLogin")]
        public IActionResult JwtLogin([FromBody] LoginModel data)
        {
            logger.LogError("这只是个测试，不用紧张");
            var result = _Service.IsAuthenticated(data);
            return Ok(result);
        }

日志如下：

 @天才卧龙的博客