C# log4net 应用

在app.config文件中添加如下内容

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <appSettings>
    <add key="log4net.Config" value="D:\万集工作\项目\我的代码\ConsoleApp1\ConsoleApp30\log4net.config"/>
    <add key="log4net.Config.Watch" value="True"/>
  </appSettings>
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>

如果没有app.config文件，那么就添加新建项，添加一个，文件内容如下

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <appSettings>
    <add key="log4net.Config" value="\log4net.config"/>
    <add key="log4net.Config.Watch" value="True"/>
  </appSettings>
</configuration>

新建log4net.config文件

<log4net>
  <logger name="logerror">
    <level value="ERROR" />
    <appender-ref ref="ErrorAppender" />
  </logger>
  <logger name="loginfo">
    <level value="INFO" />
    <appender-ref ref="InfoAppender" />
  </logger>
  <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
    <param name="File" value="Log\\LogError\\" />
    <param name="AppendToFile" value="true" />
    <param name="MaxSizeRollBackups" value="100" />
    <param name="MaxFileSize" value="10240" />
    <param name="StaticLogFileName" value="false" />
    <param name="DatePattern" value="yyyyMMdd" txt="" />
    <param name="RollingStyle" value="Date" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" value="%n异常时间：%d %n异常级别：%-5p%n异常内容：%m%n" />
    </layout>
    <!--< > = <> %n = 回车-->
  </appender>
  <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
    <param name="File" value="Log\\LogInfo\\" />
    <param name="AppendToFile" value="true" />
    <param name="MaxFileSize" value="10240" />
    <param name="MaxSizeRollBackups" value="100" />
    <param name="StaticLogFileName" value="false" />
    <param name="DatePattern" value="yyyyMMdd" txt="" />
    <param name="RollingStyle" value="Date" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" value="日志时间：%d %n日志级别：%-5p  %n日志内容：%m%n%n" />
    </layout>
  </appender>
</log4net>

然后新建Log4net帮助类

using System;
using System.IO;

namespace LowspeedUpLoadToProviLevelApi.Tool
{
    public class LogFactory
    {
        private LogFactory()
        {

        }

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

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

        public static void SetConfig()
        {
            log4net.Config.XmlConfigurator.Configure();
        }

        public static void SetConfig(FileInfo configFile)
        {
            log4net.Config.XmlConfigurator.Configure(configFile);
        }
        /// <summary>
        /// 记录信息
        /// </summary>
        /// <param name="info"></param>
        public static void LogWriteInfo(string info)
        {
            if (loginfo.IsInfoEnabled)
            {
                loginfo.Info(info);
            }
        }
        /// <summary>
        /// 记录错误
        /// </summary>
        /// <param name="se"></param>
        public static void LogWriteError(Exception se)
        {
            if (logerror.IsErrorEnabled)
            {
                logerror.Error(se);
            }
        }
    }
}