log4net 发布到生产环境不写日志的解决方法--使用 NLog日志

1、升级到log4net的最新版

PM下执行

Install-Package log4net

还是无法解决的，使用下面的方法

2、使用Nlog替换之，详见https://github.com/NLog/NLog/wiki/Tutorial

安装

Install-Package NLog.Config 

NLog使用方法比log4net更为简单，配置文件如下，如果成windows程序需将NLog.config自动复制到bin下面

 <?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"
       xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
       autoReload="true"
       throwExceptions="false"
       internalLogLevel="Off" internalLogFile="F:\temp\20160907\NLog\log\nlog-internal.log">

   <!-- optional, add some variables
   https://github.com/nlog/NLog/wiki/Configuration-file#variables
   -->
   <variable name="myvar" value="myvalue"/>

   <!--
   See https://github.com/nlog/nlog/wiki/Configuration-file
   for information on customizing logging rules and outputs.
    -->
   <targets>

     <!--
     add your targets here
     See https://github.com/nlog/NLog/wiki/Targets for possible targets.
     See https://github.com/nlog/NLog/wiki/Layout-Renderers for the possible layout renderers.
     -->

     <!--
     Write events to a file with the date in the filename.
     <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
             layout="${longdate} ${uppercase:${level}} ${message}" />
     -->
       <target name="logfile" xsi:type="File" fileName="${basedir}/logs/${shortdate}.log" />
       <target name="console" xsi:type="ColoredConsole" />
   </targets>

   <rules>
       <!-- add your logging rules here -->

       <!--
     Write all events with minimal level of Debug (So Debug, Info, Warn, Error and Fatal, but not Trace)  to "f"
     <logger name="*" minlevel="Debug" writeTo="f" />
     -->
       <logger name="*" minlevel="Debug" writeTo="logfile" />
       <logger name="*" minlevel="Info" writeTo="console" />
   </rules>
 </nlog>

NLog.config

调用代码：

   Logger logger = LogManager.GetCurrentClassLogger();

             logger.Trace("Sample trace message");
             logger.Debug("Sample debug message");
             logger.Info("Sample informational message");
             logger.Warn("Sample warning message");
             logger.Error("Sample error message");
             logger.Fatal("Sample fatal error message");

             logger.Info("wilson测试 日志日期：{0}", DateTime.Now);

执行结果，非常漂亮的控制台输出：

web站点配置log写入到sql server数据库，需要安装NLog.Web

Install-Package NLog.Web

配置文件如下

 <?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"
       xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
       autoReload="true"
       throwExceptions="false"
       internalLogLevel="Off" internalLogFile="F:\temp\20160907\NLog\log\nlog-internal.log">

   <!-- optional, add some variables
   https://github.com/nlog/NLog/wiki/Configuration-file#variables
   -->
   <variable name="myvar" value="myvalue"/>

   <!--
   See https://github.com/nlog/nlog/wiki/Configuration-file
   for information on customizing logging rules and outputs.
    -->
   <targets>

     <!--
     add your targets here
     See https://github.com/nlog/NLog/wiki/Targets for possible targets.
     See https://github.com/nlog/NLog/wiki/Layout-Renderers for the possible layout renderers.
     -->

     <!--
     Write events to a file with the date in the filename.
     <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
             layout="${longdate} ${uppercase:${level}} ${message}" />
     -->
       <target name="logfile" xsi:type="File" fileName="${basedir}/logs/${shortdate}.log" />
       <target name="console" xsi:type="ColoredConsole" />

       <target name="db"
       xsi:type="Database"
       connectionStringName="NLogConn"
       commandType="StoredProcedure"
       commandText="[dbo].[NLog_AddEntry_p]"
         >
           <parameter name="@machineName"    layout="${machinename}" />
           <parameter name="@siteName"       layout="${iis-site-name}" />
           <parameter name="@logged"         layout="${date}" />
           <parameter name="@level"          layout="${level}" />
           <parameter name="@username"       layout="${aspnet-user-identity}" />
           <parameter name="@message"        layout="${message}" />
           <parameter name="@logger"         layout="${logger}" />
           <parameter name="@properties"     layout="${all-event-properties:separator=|}" />
           <parameter name="@serverName"     layout="${aspnet-request:serverVariable=SERVER_NAME}" />
           <parameter name="@port"           layout="${aspnet-request:serverVariable=SERVER_PORT}" />
           <parameter name="@url"            layout="${aspnet-request:serverVariable=HTTP_URL}" />
           <parameter name="@https"          layout="${when:inner=1:when='${aspnet-request:serverVariable=HTTPS}' == 'on'}${when:inner=0:when='${aspnet-request:serverVariable=HTTPS}' != 'on'}" />
           <parameter name="@serverAddress"  layout="${aspnet-request:serverVariable=LOCAL_ADDR}" />
           <parameter name="@remoteAddress"  layout="${aspnet-request:serverVariable=REMOTE_ADDR}:${aspnet-request:serverVariable=REMOTE_PORT}" />
           <parameter name="@callSite"       layout="${callsite}" />
           <parameter name="@exception"      layout="${exception:tostring}" />
       </target>

   </targets>

   <rules>
       <!-- add your logging rules here -->

       <!--
     Write all events with minimal level of Debug (So Debug, Info, Warn, Error and Fatal, but not Trace)  to "f"
     <logger name="*" minlevel="Debug" writeTo="f" />
     -->
       <logger name="*" minlevel="Debug" writeTo="logfile" />
       <logger name="*" minlevel="Info" writeTo="console" />

       <logger name="*" minlevel="Debug" writeTo="db" />
   </rules>
 </nlog>

Web NLog配置

Web.Config要加上对应数据库连接

<?xml version="1.0" encoding="utf-8"?>

<!--
  有关如何配置 ASP.NET 应用程序的详细信息，请访问
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
    <connectionStrings>
        <add name="NLogConn" connectionString="Server=.;uid=sa;pwd=sa;Database=db;"/>
    </connectionStrings>
    <system.web>
      <compilation debug="true" targetFramework="4.0" />
    </system.web>

</configuration>

保存数据库结果：

写入oracle的配置，使用System.Data.OracleClient，.net 4.0以上已经抛弃

 <targets>
   <target name="oraclelog" type="Database">

           <dbProvider>System.Data.OracleClient.OracleConnection,System.Data.OracleClient, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</dbProvider>

           <connectionString>Data Source=JMDB_215;User ID=TYUM_UM; Password=DEV_TYUM_UM;</connectionString>

           <commandText>insert into RS_LOGTABLE (log_user,log_level,log_date,log_message) values(:log_user,:log_level,:log_date,:log_message)</commandText>

           <parameter name=":log_user" layout="${aspnet-user-identity}"/>
           <parameter name=":log_level" layout="${level}"/>
           <parameter name=":log_date" layout="${date}"/>
           <parameter name=":log_message" layout="${message}"/>

       </target>
 </targets>
  <rules>
     <logger name="*" minlevel="Debug" writeTo="oraclelog" />
 </rules>

写入oracle的配置，使用Oracle.DataAccess.Client，配置文件如下：

     <targets>
   <target name="oraclelog" type="Database">

           <!--<dbProvider>Oracle.ManagedDataAccess.Client,Oracle.ManagedDataAccess</dbProvider>-->
           <dbProvider>Oracle.DataAccess.Client.OracleConnection,Oracle.DataAccess</dbProvider>
           <connectionString>Data Source=orcl;User ID=oracle_user; Password=password;</connectionString>

           <commandText>insert into RS_LOGTABLE (log_user,log_level,log_date,log_message) values(:log_user,:log_level,:log_date,:log_message)</commandText>

           <parameter name=":log_user" layout="${machinename}"/>
           <parameter name=":log_level" layout="${level}"/>
           <parameter name=":log_date" layout="${date}"/>
           <parameter name=":log_message" layout="${message}"/>

       </target>
 </targets>

  <rules>
       <logger name="oracleDbLog" minlevel="Debug" writeTo="oraclelog" />
   </rules>

Oracle.DataAccess.Client Log配置

C#调用代码：

   Logger oracleLogger = LogManager.GetLogger("oracleDbLog");

            oracleLogger.Error(new Exception("自定义异常oracle"), "错误信息 oracledb", string.Empty);

执行结果：

写入Mysql，需应用MySql.Data程序集，安装Install-Package MySql.Data -Version 6.9.9，配置文件如下：

 <targets>
  <target name="MySQLLog" type="Database">
           <dbProvider>MySql.Data.MySqlClient.MySqlConnection,MySql.Data</dbProvider>
           <connectionString>Server=192.168.0.2;Uid=root;Pwd=root;Database=mydb;</connectionString>

           <commandText>insert into t_nlog (log_user,log_level,log_date,log_message) values(@log_user,@log_level,@log_date,@log_message)</commandText>

           <parameter name="@log_user" layout="${machinename}"/>
           <parameter name="@log_level" layout="${level}"/>
           <parameter name="@log_date" layout="${date}"/>
           <parameter name="@log_message" layout="${message}"/>
       </target>
 </targets>

 <rules>
  <logger name="*" minlevel="Debug" writeTo="MySQLLog" />
 </rules>      

NLog Mysql

执行结果：

文件日志异常模板：

      <target name="logfile" xsi:type="File" fileName="${basedir}/nlogs/${shortdate}.log"  layout="${longdate}|${level}||${logger} ${message}| ${exception:format=tostring}" />

NLog日志写入到MongoDB，安装NLog.Mongo

PM> Install-Package NLog.Mongo
配置文件：

  <extensions>
         <add assembly="NLog.Mongo"/>
     </extensions>

    <target xsi:type="Mongo"
        name="mongoDefault"
        connectionString="mongodb://192.168.0.226:6111/NLogging"
        collectionName="DefaultLog"
        cappedCollectionSize="26214400">
           <property name="ThreadID" layout="${threadid}" bsonType="Int32" />
           <property name="ThreadName" layout="${threadname}" />
           <property name="ProcessID" layout="${processid}" bsonType="Int32" />
           <property name="ProcessName" layout="${processname:fullName=true}" />
           <property name="UserName" layout="${windows-identity}" />
       </target>

  <rules>

       <logger name="*" level="Debug" writeTo="mongoDefault" />
   </rules>

NLog.config

执行结果如下：

参考：https://github.com/loresoft/NLog.Mongo