Log4net.dll记录日志的使用

参考学习网址：
http://blog.csdn.net/weifangyh/article/details/8524380
http://blog.csdn.net/dragon_ton/article/details/71601339
https://www.cnblogs.com/kissazi2/p/3392094.html
https://www.cnblogs.com/zeroone/p/3606160.html

1.新建一个控制台应用程序，在项目中引用log4net.dll，然后项目中添加一个配置文件log4net.config：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
  </configSections>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
  
  <log4net debug="false">
    <appender name="ApplePushFileAppender"
              type="log4net.Appender.RollingFileAppender">
      <param name="File"
             value="Logs\\ApplePush" />
      <!--日志路径-->
      <param name="AppendToFile" value="true"/>
      <!--日志生成追加在文件中-->
      <param name="DatePattern" value=".yyyyMMdd&quot;.log&quot;" />
      <!--生成日志文件名称的格式-->
      <param name="RollingStyle" value="Date"/>
      <!--日志重复方式，按照日期重复，每天产生一个日志文件-->
      <param name="StaticLogFileName" value="false"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="DEBUG" />
    </root>
    <logger name="ApplePush">
      <!--日志名字，需要跟后面代码中的名字一样-->
      <appender-ref ref="ApplePushFileAppender" />
    </logger>
  </log4net>
</configuration>

2.新建一个loggerhelper类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using log4net;
using System.Reflection;
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Web.config", Watch = true)]  
namespace TestLog4Net
{
    public static class LoggerHelper
    {
        private static ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        /// <summary>
        /// 获取当前 Ilog 对象
        /// </summary>
        public static ILog GetILog
        {
            get
            {
                return log;
            }
        }
        /// <summary>
        /// 记录错误日志
        /// </summary>
        /// <param name="message"></param>
        /// <param name="ex"></param>
        public static void Error(object message, Exception ex)
        {
            log.Error(message, ex);
        }
        /// <summary>
        /// 记录严重错误
        /// </summary>
        /// <param name="message"></param>
        /// <param name="ex"></param>
        public static void Fatal(object message, Exception ex)
        {
            log.Fatal(message, ex);
        }
        /// <summary>
        /// 记录一般信息
        /// </summary>
        /// <param name="message"></param>
        public static void Info(object message)
        {
            log.Info(message);
        }
        /// <summary>
        /// 记录调试信息
        /// </summary>
        /// <param name="message"></param>
        public static void Debug(object message)
        {
            log.Debug(message);
        }
        /// <summary>
        /// 记录警告信息
        /// </summary>
        /// <param name="message"></param>
        public static void Warn(object message)
        {
            log.Warn(message);
        }
    }
}

3.使用loggerhelper类