C# Winform使用log4net进行日志记录

目录

• 写在前面
• 获取类库
• 配置模板
• 工具类
• 调用示例

写在前面

Log4Net是从Java的log4j移植过来的，功能也与log4j类似，可以把日志信息输出到文件、数据库、控制台、Windows 事件日志、远程系统日志服务等不同的介质或目标。

Log4Net配置选项丰富灵活，并且可在运行时动态更新配置并应用，允许同时推送到多个目标；虽然项目已经休眠了，但是该类库已久经考验，经典的设计永不过时。

获取类库

可通过NuGet获取类库，引入到项目中。

配置模板

新建log4net.XML文件，命名成log4net.config也可以，初始化时保持一致即可，配置内容如下：

<?xml version="1.0" encoding="utf-8"?>
<log4net>
  <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger %ndc - %message%newline" />
    </layout>
  </appender>
  <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" LEVEL="INFO">
    <!--防止多线程时不能写Log,官方说线程非安全-->
    <param name="LockingModel" type="log4net.Appender.FileAppender+MinimalLock" />
    <param name="File" value="Logs/" />
    <param name="AppendToFile" value="true"/>
    <param name="Static编程客栈LogFileName" value="false" />
    <param name="DatePattern" value="yyyy-MM-dd.'info.log'" />
    <param name="RollingStyle" value="Date"/>
    <param name="MaxSizeRollBackups" value="10" />
    <param name="MaximumFileSize" value="5MB" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" value="## %d [%t] %-5p %x %m %n"/>
      <!--<param name="ConversionPattern" value="%date [%thread] %-5level [%logger] %ndc - %message%newline" />-->
    </layout>
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="INFO" />
      <param name="LevelMax" value="INFO" />
    </filter>
  </appender>
  <appender name="ErrorFileAppender" type="log4net.Appender.RollingFileAppender" LEVEL="ERROR">
    <param name="LockingModel" type="log4net.Appender.FileAppender+MinimalLock" />
    <param name="File" value="Logs/" />
    <param name="AppendToFile" value="true"/>
    <param name="StaticLogFileName" value="false" />
    <param name="DatePatterjsn" value="yyyy-MM-dd.'error.log'" />
    <param name="RollingStyle" value="Date"/>
    <param name="MaxSizeRollBackups" value="10" />
    <param name="MaximumFileSize" value="5MB" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" value="%date [%thread] %-5level [%logger] %ndc - %message%newline" />
    </layout>
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="WARN" />
      <param name="LevelMax" value="ERROR" />
    </filter>
  </appender>
  <appender name="DebugFileAppender" type="log4net.Appender.RollingFileAppender" LEVEL="ERROR">
    <param name="LockingModel" type="log4net.Appender.FiZeoXileAppender+MinimalLock" />
    <param name="File" value="Logs/" />
    <param name="AppendToFile" value="true"/>
    <param name="StaticLogFileName" value="false" />
    <param name="DatePattern" value="yyyy-MM-dd.'debug.log'" />
    <param name="RollingStyle" value="Date"/>
    <param name="MaxSizeRollBackups" value="10" />
    <param name="MaximumFileSize" value="5MB" />
    <layout type="log4net.Layout.PatternLayout">
      <param name="ConversionPattern" www.devze.comvalue="%date [%thread] %-5level [%logger] %ndc - %message%newline" />
    &l编程客栈t;/layout>
    <filter type="log4net.Filter.LevelRangeFilter">
      <param name="LevelMin" value="DEBUG" />
      <param name="LevelMax" value="DEBUG" />
    </filter>
  </appender>
  <root>
    <level value="All" />
    <appender-ref ref="LogFileAppender" />
    <appender-ref ref="ErrorFileAppender"/>
    <appender-ref ref="DebugFileAppender" />
    <appender-ref ref="ConsoleAppender" />
  </root>
</log4net>

将文件属性中的“复制到输出目录”配置为始终复制，这样配置文件会同步置执行或发布目录。

引用并初始化类库

static Program()
{
    //加载log4net配置
    log4net.Config.XmlConfigurator.ConfigureAndwatch(new FileInfo(AppDomain.CurrentDomain.BaseDirectory + @"\log4net.xml"));
}

也可以在AssemblyInfo.cs中进行初始化配置

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4Net.xml")] 

工具类

    public static class LogHelper
    {
        public static void Info(object msg, params object[] parameters)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Info(msg);
        }
 
        public static void Debug(string msg)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Debug(msg);
        }
 
        public static void Error(string msg)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Error(msg);
        }
 
        public static void FormatError(string format, params object[] args)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Error(string.Format(format, args));
        }
 
        public static void Error(Exception ex)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Error(ex.Message, ex);
        }
 
        public static void Error(object msg, Exception ex)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Error(msg, ex);
        }
 
        public static void Warn(object msg, Exception ex)
        {
            var log = LogManager.GetLogger("log4netlogger");
            log.Warn(msg, ex);
        }
 
        public static void Log(string msg)
        {
            Info(msg);
        }
 
        public static void Log(Exception ex)
        {
            Error(ex);
        }
 
    }

调用示例

LogHelper.Info("事件类型出错，类型：" + _rv.EventType + "，参数：" + _rv.EventArgs);
 
LogHelper.Debug(string.Format("action_finish：{0}", TacticsName));
 
LogHelper.Error(string.Format("json序列化失败：{0}", json), ex);

到此这篇关于C# Winform使用log4net进行日志记录的文章就介绍到这了,更多相关C# log4net记录日志内容请搜索编程客栈(www.devze.com)以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程客栈(www.devze.com)！