整理：log4net快速使用

一、安装
整理：log4net快速使用
二、配置项目程序集
[assembly: log4net.Config.XmlConfigurator(ConfigFile = “log4Net.config”, Watch = true)]

三、新建配置信息文件log4net.config
文件放在项目根目录下

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
  </configSections>
  <appSettings>
  </appSettings>
  <log4net>
    <logger name="logInfo">
      <!--级别 OFF>FATAL>ERROR>WARN>INFO>DEBUG>ALL -->
      <level value="ALL" />
      <appender-ref ref="Log" />
    </logger>
    <!--信息日志-->
    <appender name="Log" type="log4net.Appender.RollingFileAppender">
      <!--日志路径-->
      <param name= "File" value= "Log\"/>
      <!--是否是向文件中追加日志-->
      <param name= "AppendToFile" value= "true"/>
      <param name="maximumFileSize" value="1MB"/>
      <param name= "MaxSizeRollBackups" value= "-1"/>
      <!--日志文件名是否是固定不变的-->
      <param name= "StaticLogFileName" value= "false"/>
      <!--日志文件名格式为:20170831.log-->
      <param name= "DatePattern" value= "yyyyMMdd&quot;.log&quot;"/>
      <!--日志根据日期和大小滚动-->
      <param name= "RollingStyle" value= "Composite"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d - %m%n" />
      </layout>
    </appender>
  </log4net>
</configuration>

四、使用
新建类

//输出错误日志，保存在log文件夹里面
    public static class ErrorLog
    {
        public static ILog log = LogManager.GetLogger("logInfo");
        public static void Writer(object msg)
        {
            log.Info(msg);
        }
        public static void Writer(Exception e)
        {
            log.Info("api接口错误：" + "[" + e.Message + "]" + e.StackTrace);
        }
    }