Log4Net 用法记录

https://www.cnblogs.com/lzrabbit/archive/2012/03/23/2413180.html

https://blog.csdn.net/guyswj/article/details/81940188

一、引用log4net

二、在AssemblyInfo.cs中添加

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", ConfigFileExtension = "config", Watch = true)]

三、新增配置文件log4net.config

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

<configuration>

  <configSections>

    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>

  </configSections>

  <log4net debug="true">

    <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">

      <!--日志路径-->

      <param name="File" value="bin\\logError\\" />

      <!--是否向文件中追加日志-->

      <param name="AppendToFile" value="true" />

      <!--按照何种方式产生多个日志文件(日期[Date],文件大小[Size],混合[Composite])-->

      <param name="RollingStyle" value="Composite" />

      <!--日志文件名格式为:2008-08-31.log-->

      <param name="DatePattern" value="yyyy-MM-dd&quot;.log&quot;" />

      <!--日志保留天数-->

      <param name="MaxSizeRollBackups" value="20" />

      <!--每个文件的大小。只在混合方式与文件大小方式下使用。超出大小后在所有文件名后自动增加正整数重新命名，数字最大的最早写入。可用的单位:KB|MB|GB。不要使用小数,否则会一直写入当前日志-->

      <param name="MaximumFileSize" value="1024KB" />

      <!--日志文件名是否是固定不变的-->

      <param name="StaticLogFileName" value="false" />

      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />

      <layout type="log4net.Layout.PatternLayout">

        <param name="ConversionPattern" value="记录时间：%date%newline线程ID:[%thread]%newline日志级别：%-5level%newline执行时间：%r毫秒%newline出错类：%logger%newline出错位置：%l%newline错误描述：%message%newline异常信息：%exception%newline"/>

      </layout>

    </appender>

    <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">

      <param name="File" value="bin\\logInfo\\" />

      <param name="AppendToFile" value="true" />

      <param name="RollingStyle" value="Date" />

      <param name="DatePattern" value="yyyy-MM-dd&quot;.log&quot;" />

      <param name="MaxSizeRollBackups" value="20" />

      <param name="MaximumFileSize" value="1024KB" />

      <param name="StaticLogFileName" value="false" />

      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />

      <layout type="log4net.Layout.PatternLayout">

        <param name="ConversionPattern" value="%d %m %n"  />

      </layout>

    </appender>

    <logger name="logerror">

      <level value="ALL" />

      <appender-ref ref="ErrorAppender" />

    </logger>

    <logger name="loginfo">

      <level value="ALL" />

      <appender-ref ref="InfoAppender" />

    </logger>

  </log4net>

</configuration>

四、封装Log4Helper类

public class Log4Helper

{

    public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");

    public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");

    public static void Info(params System.Object[] info)

    {

        if (loginfo.IsInfoEnabled)

        {

            string msg = string.Empty;

            msg = toString(info);

            loginfo.Info(msg);

        }

    }

    public static void Error(Exception e, params System.Object[] info)

    {

        if (logerror.IsErrorEnabled)

        {

            string msg = string.Empty;

            msg = toString(info);

            logerror.Error(msg, e);

        }

    }

    /// <summary>

    /// 接收不定参数转为字符串

    /// </summary>

    /// <param name="msg"></param>

    /// <returns></returns>

    public static string toString(params System.Object[] msg)

    {

        string result = string.Empty;

        for (int i = 0; i < msg.Length; i++)

        {

            if (result.Length > 0)

            {

                result = result + " ";

            }

            result = result + msg[i];

        }

        return result;

    }

}

五、调用示例

using ...;

Log4Helper .Info("appKey", "name", 123456789);

// Log4Helper .Error(e, "appKey", "name", 123456789);

Log4Helper .Error(new Exception("log4net测试致命信息"), "appKey", "proCode", 123456789);

log4net使用中loginfo.IsInfoEnabled=false问题解决方法

https://www.cnblogs.com/so-yi/p/9783887.html

巴特西

Log4Net 用法记录

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