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C#中异常的记录——log4net

news 来源：原创 2024/5/6 23:23:26

C#中异常的记录也有一个模板，就是log4net。多的就不说了直接看怎么用的吧。
1、引用log4net.dll。
2、实现log4net的方法。

public class LogImplement      {          private ILog logger;            public LogImplement(ILog log)          {              this.logger = log;          }            public void Debug(object message)          {              this.logger.Debug(message);          }            public void Debug(object message, Exception e)          {              this.logger.Debug(message, e);          }            public void Warming(object message)          {              this.logger.Warn(message);          }            public void Warming(object message,Exception e)          {              this.logger.Warn(message, e);          }            public void Error(object message)          {              this.logger.Error(message);          }            public void Error(object message, Exception e)          {              this.logger.Error(message, e);          }            public void Info(object message)          {              this.logger.Info(message);          }            public void Info(object message, Exception e)          {              this.logger.Info(message, e);          }      }        public class LogFactory      {          static LogFactory()          {              FileInfo configFile = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + @"Log.config");                log4net.Config.XmlConfigurator.Configure(configFile);          }            public static LogImplement GetLogger(Type type)          {              return new LogImplement(LogManager.GetLogger(type));          }            public static LogImplement GetLogger(string str)          {              return new LogImplement(LogManager.GetLogger(str));          }      }

3、配置文件

<configuration>    <configSections>      <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net-net-2.0"/>    </configSections>    <log4net>      <root>        <appender-ref ref="ErrorLogFileAppender"/>        <appender-ref ref="WarningFileAppender"/>        <appender-ref ref="DebugLogFileAppender"/>      </root>      <!--记录warning-->      <appender name="WarningFileAppender" type="log4net.Appender.RollingFileAppender">        <file value="log\Warn.log"/>        <appendToFile value="true"/>        <maxSizeRollBackups value="10"/>        <maximumFileSize value="1MB"/>        <rollingStyle value="Size"/>        <staticLogFileName value="true"/>        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="[%date] [%-5level] [%logger] - %message%newline"/>        </layout>        <filter type="log4net.Filter.LevelRangeFilter">          <param name="LevelMin" value="WARN"/>          <param name="LevelMax" value="WARN"/>        </filter>      </appender>      <!--记录错误-->      <appender name="ErrorLogFileAppender" type="log4net.Appender.RollingFileAppender">        <file value="log\Error.log"/>        <appendToFile value="true"/>        <maxSizeRollBackups value="10"/>        <maximumFileSize value="1MB"/>        <rollingStyle value="Size"/>        <staticLogFileName value="true"/>        <layout type="log4net.Layout.PatternLayout">          <conversionPattern value="[%date] [%-5level] [%logger] - %message%newline"/>        </layout>        <filter type="log4net.Filter.LevelRangeFilter">          <param name="LevelMin" value="ERROR"/>          <param name="LevelMax" value="ERROR"/>        </filter>      </appender>      <!--记录调试日志-->      <appender name="DebugLogFileAppender" type="log4net.Appender.RollingFileAppender">        <file value="log\debug.log"/>        <param name="AppendToFile" value="true"/>        <param name="MaxSizeRollBackups" value="10"/>        <param name="MaximumFileSize" value="1MB"/>        <param name="StaticLogFileName" value="true"/>        <param name="RollingStyle" value="Size"/>        <layout type="log4net.Layout.PatternLayout">          <param name="ConversionPattern" value="[%p] [%d{MM/dd/yyyy HH:mm:ss,fff}] [%t] [%c]- %m%n"/>        </layout>        <filter type="log4net.Filter.LevelRangeFilter">          <param name="LevelMin" value="DEBUG"/>          <param name="LevelMax" value="DEBUG"/>        </filter>      </appender>      <!--调试模式，输出日志到控制台-->      <appender name="ConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">        <mapping>          <level value="ERROR"/>          <foreColor value="Red, HighIntensity"/>          <!--<backColor value="Green" />-->        </mapping>        <mapping>          <level value="DEBUG"/>          <foreColor value="Yellow, HighIntensity"/>          <backColor value="Green"/>        </mapping>        <layout type="log4net.Layout.PatternLayout">          <footer value="--------------------------------------------------------------------"/>          <param name="ConversionPattern" value="[%p] [%d{MM/dd/yyyy HH:mm:ss,fff}] [%t] [%c]- %m%n"/>        </layout>        <filter type="log4net.Filter.LevelRangeFilter">          <param name="LevelMin" value="DEBUG"/>          <param name="LevelMax" value="ERROR"/>        </filter>      </appender>    </log4net>    <startup>      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>    </startup>  </configuration>

其中， <maximumFileSize value="1MB"/>表示异常文件超过1M大小就自动新增文件；<file value="log\Warn.log"/>表示异常文件的路径；<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>表示要支持的.net版本。至于其他属性在使用中自己可以慢慢体会。
4、记录异常

 public class RecordLog      {          public static void RecordException(Exception e)          {              LogImplement log = LogFactory.GetLogger(typeof(RecordLog));                log.Error(e.Message + e.StackTrace);          }      }

5、调用

       static void Main(string[] args)          {              try              {                  string test = "123tr";                    int i = int.Parse(test);//制造一个异常              }              catch(Exception e)              {                  RecordLog.RecordException(e);              }          }

运行后，异常文件的位置如图：