asp.net core 2.1 增加Nlog日志到sql server数据库

一、增加引用

<PackageReference Include="NLog.Extensions.Logging" Version="1.2.1" />
<PackageReference Include="NLog.Web.AspNetCore" Version="4.6.0" />

 

二、配置nlog.config

<?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="Logs/internal-nlog.txt">
  
  <!-- define various log targets -->
  <targets>
    <!-- write logs to file -->
    <target xsi:type="File" name="allfile" fileName="Logs/${date:format=yyyyMM}/nlog-all-${shortdate}.log"
             layout="${longdate}|${event-properties:item=EventId.Id}|${uppercase:${level}}|${logger} ${newline}${message} ${exception} ${newline}" />
                  
    <target xsi:type="File" name="ownFile-web" fileName="Logs/${date:format=yyyyMM}/nlog-own-${shortdate}.log"
             layout="${longdate}|${event-properties:item=EventId.Id}|${uppercase:${level}}|${logger} ${newline}${message} ${exception} ${newline} --- |url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />

    <target xsi:type="Null" name="blackhole" />
    <target xsi:type="Database" name="database">
      <connectionString>${var:connectionString}</connectionString>
      <commandText>
        insert into syslog (levels,operatingtime,operatingaddress,userid,logger,requesturl,referrerurl,action,message,exception) 
        values (@levels,@operatingtime,@operatingaddress,@userid,@logger,@requesturl,@referrerurl,@action,@message,@exception);
      </commandText>
      <parameter name="@levels" layout="${level}" />
      <parameter name="@operatingTime" layout="${date}" />
      <parameter name="@operatingaddress" layout="${aspnet-Request-IP}" />
      <parameter name="@userid" layout="1" />
      <parameter name="@logger" layout="${logger}" />
      <parameter name="@requesturl" layout="${aspnet-request-url}" />
      <parameter name="@referrerurl" layout="${aspnet-request}" />
      <parameter name="@action" layout="${aspnet-mvc-action}" />
      <parameter name="@message" layout="${message}" />
      <parameter name="@exception" layout="${exception:tostring}" />
    </target>
  </targets>

  <rules>
    <!--All logs, including from Microsoft-->
    <!--minlevel 改为Trace 跟踪全部 Error 只捕获异常-->
    <logger name="*" minlevel="Error" writeTo="allfile" />

    <!--Skip Microsoft logs and so log only own logs-->
    <logger name="Microsoft.*" minlevel="Trace" writeTo="blackhole" final="true" />
    <logger name="*" minlevel="Trace" writeTo="ownFile-web" />
    <logger name="*" minlevel="Trace" writeTo="database" />
  </rules>
</nlog>

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