LOG4使用记录

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

<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net-net-1.0" />
    <!--<section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>-->
  </configSections>
  <appSettings>
  </appSettings>

  <log4net>
    <!--定义输出到文件中-->
    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <!--定义文件存放位置-->
      <file value="log-file.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <datePattern value="yyyyMMdd-HH:mm:ss" />
      <layout type="log4net.Layout.PatternLayout">
        <!--每条日志末尾的文字说明-->
        <footer value="" />
        <!--输出格式-->
        <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
        <!--线程ID:[%thread]-->
        <conversionPattern value="记录时间：%date 日志级别：%-5level 类：%logger property:[%property{NDC}] - 描述：%message%newline" />
      </layout>
    </appender>
    <!--定义输出到控制台命令行中-->
    <!--<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <!--定义输出到windows事件中-->
    <!--<appender name="EventLogAppender" type="log4net.Appender.EventLogAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>-->
    <!--定义输出到数据库中，这里举例输出到Access数据库中，数据库为C盘的log4net.mdb-->
    <!--<appender name="AdoNetAppender_Access" type="log4net.Appender.AdoNetAppender">
      <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:log4net.mdb" />
      <commandText value="INSERT INTO LogDetails ([LogDate],[Thread],[Level],[Logger],[Message]) VALUES (@logDate, @thread, @logLevel, @logger,@message)" />
      -->
    <!--定义各个参数-->
    <!--
      <parameter>
        <parameterName value="@logDate" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logLevel" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>-->
    <!--定义日志的输出媒介，下面定义日志以四种方式输出。也可以下面的按照一种类型或其他类型输出。-->
    <root>
      <!--文件形式记录日志-->
      <appender-ref ref="LogFileAppender" />
      <!--控制台控制显示日志-->
      <!--<appender-ref ref="ConsoleAppender" />-->
      <!--Windows事件日志-->
      <!--<appender-ref ref="EventLogAppender" />-->
      <!-- 如果不启用相应的日志记录，可以通过这种方式注释掉-->
      <!--<appender-ref ref="AdoNetAppender_Access" />-->
    </root>

  </log4net>
</configuration>

使用：

1.在命名空间之前加上

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

namespace test
{

} 

 2.简单的Helper

using System;
using System.Collections.Generic;
using System.Text;
using log4net;

namespace test
{
    public class Log
    {
        public static ILog Logger
        {
            get
            {
                ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
                return log;
            }
        }

} 

 LOG4NET DOWNLOAD 

http://logging.apache.org/log4net/