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关于NLog在.NET CORE下如何进行日志的持久化及通过邮件发送日志


配置过程

  1. 安装NLog

    通过Nuget进行集成(NuGet Gallery | NLog.Web.AspNetCore 4.14.0)

    通过命令行安装 Install-Package NLog.Web.AspNetCore -Version 4.14.0

    通过可视化管理工具查找并安装 NLog.Web.AspNetCore

  2. 修改Program.cs

    public static IHostBuilder CreateHostBuilder(string[] args) =>         Host.CreateDefaultBuilder(args)             .ConfigureLogging((context, builder) =>             {                 // 适配原来的Log配置                 builder.AddConfiguration(context.Configuration.GetSection("Logging"));                 builder.AddConsole();                 builder.AddDebug();                 builder.AddEventSourceLogger();                 // 以下关键配置                 builder.AddNLogWeb();                 builder.AddNLog();                 // 关键配置结束             })             .ConfigureWebHostDefaults(webBuilder =>             {                 webBuilder.UseUrls("http://*:5000");                 webBuilder.UseStartup<Startup>();             }); 
  3. 配置Startup.cs

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env) {     ......          // 在UseEndpoints之前增加如下增加对部分 Layout renderers 的支持     app.Use(async (context, next) => {         context.Request.EnableBuffering();         await next();     });          ...... } 
  4. 增加NLog.config

    注意此文件配置为复制到输出目录

    每一项的配置可以参考下方的NLog配置项

    <?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"       throwConfigExceptions="true">      <targets>         <!-- 文件持久化 -->         <target name="f1" xsi:type="File"                 layout="PROJECT:${iis-site-name}${newline} REQUEST:${newline} ${aspnet-request-method} ${aspnet-request-url}${newline} QUERYSTRING:${newline} ${aspnet-request-querystring}${newline} HEADERS:${newline} ${aspnet-request-headers}${newline} FORM:${newline} ${aspnet-request-form}${newline} POSTED-BODY:${newline} ${aspnet-request-posted-body}${newline} COOKIE:${newline} ${aspnet-request-cookie}${newline}${newline} ${longdate}|${uppercase:${level}}|${logger}${newline}${newline} ${message}${newline}${newline} ${exception:format=ToString}"                 fileName="Logsnlog-all-${shortdate}.log" />         <!-- 邮件支持 -->         <target xsi:type="Mail"                 name="m1"                 html="true"                 replaceNewlineWithBrTagInHtml="true"                 addNewLines="true"                 subject="发送邮件主题:[测试项目][${level}]${message}"                 to="接收人邮箱"                 from="发送人邮箱"                 body="PROJECT:${iis-site-name}${newline} REQUEST:${newline} ${aspnet-request-method} ${aspnet-request-url}${newline} QUERYSTRING:${newline} ${aspnet-request-querystring}${newline} HEADERS:${newline} ${aspnet-request-headers}${newline} FORM:${newline} ${aspnet-request-form}${newline} POSTED-BODY:${newline} ${aspnet-request-posted-body}${newline} COOKIE:${newline} ${aspnet-request-cookie}${newline}${newline} ${longdate}|${uppercase:${level}}|${logger}${newline}${newline} ${message}${newline}${newline} ${exception:format=ToString}"                 smtpUserName="发送人账号"                 enableSsl="true"                 smtpPassword="发送人密码"                 smtpAuthentication="Basic"                 smtpServer="发送邮箱的smtp"                 smtpPort="发送邮箱的smtp端口" />      </targets>      <rules>         <logger name="*" minlevel="Error" writeTo="f1" />         <logger name="*" minlevel="Error" maxlevel="Error" writeTo="m1" />     </rules> </nlog> 

相关资源

NLog官网:NLog (nlog-project.org)

NLog配置项:Config | NLog (nlog-project.org)

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