.net 日志系统官网: https://logging.apache.org/

有了log4j2的基础，log4net使用也类似，很容易让JAVA程序员上手。

1.通过NuGet下载依赖包 log4net 2.0.8

2.创建配置文件 log4net.config,放置到源代码src下，要运行起来要放到/bin/Debug/ /bin/Release 下,并在文件AssemblyInfo.cs上加上一句：

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

 log4net.config 正文内容如下:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
  <log4net debug="true">
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingLogFileAppender" />
      <appender-ref ref="ConsoleAppender" />
    </root>
    <appender name="ConsoleAppender"  type="log4net.Appender.ConsoleAppender" >
      <layout type="log4net.Layout.PatternLayout">
       <conversionPattern value="[%date] %level [%thread][%c{1}:%line] - %m%n" />
      </layout>
    </appender>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender" >
    <param name="File" value="game" />
      <param name="DatePattern" value="'.'yyyy-MM-dd-HH'.log'" />
      <param name="AppendToFile" value="true" />
      <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="[%date] %level [%thread][%c{1}:%line] - %m%n" />
      </layout>
    </appender>
  </log4net>
</configuration>

日志文件会在/bin/Debug下生成,当前的日志为game,历史的比如game.2017-08-11-19.log。

3.代码中如何使用

using log4net;
private static readonly ILog logger = LogManager.GetLogger(typeof(GameClient));  
 Thread.CurrentThread.Name = "main";//为了让主线程名显示
//初始化log4net
log4net.Config.XmlConfigurator.Configure();
logger.Debug("初始化连接开始");
logger.InfoFormat("测试日志 name={0}","client");

打印出来的结果如下:

[2017-08-11 20:18:19,350] DEBUG [main][GameClient:24] - 初始化连接开始
[2017-08-11 20:18:19,363] DEBUG [main][GameClient:28] - 初始化连接完毕
[2017-08-11 20:18:19,364] INFO [main][SuperSocketDemo:35] - 测试日志 name=client

对于JAVA程序员来说，是不是感觉很完美？