Log4net

By C#

Reference address:

“C# log4net configuration”

“C# use log4net to record logs”

Project reference nuget package log4net

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p>

Add a reference to the App.config file

Add the following content to the configuration node

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 "ALL" />

 ref ref="SysAppender" />

 

 

 "WebLogger">

 "DEBUG" />

 

 "SysAppender" type="log4net.Appender.RollingFileAppender,log4net">

 "File" value="log/" />

 "AppendToFile" value="true" />

 "RollingStyle" value="Date" />

 "DatePattern" value=""Logs_"yyyyMMdd".txt"< /span>" />

 "StaticLogFileName" value="false" />

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

 

 

 "consoleApp" type="log4net.Appender.ConsoleAppender,log4net">

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

View Code

Complex configuration file

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 "logerror">

 "ALL" />

 ref ref="ErrorAppender" />

 

 

 "loginfo">

 "ALL" />

 ref ref="InfoAppender" />

 

 

 "ErrorAppender" type="log4net.Appender.RollingFileAppender< span style="color: #800000;">">

 "AppendToFile" value="true" />

 "MaxSizeRollBackups" value="100" />

 "MaxFileSize" value="10240" />

 "StaticLogFileName" value="false" />

 "DatePattern" value="yyyyMMdd".htm"< span style="color: #800000;">" />

 "RollingStyle" value="Date" />

 

 "log4net.Layout.PatternLayout">

 "ConversionPattern" value="<HR COLOR=red>%nException Time: %d [%t] <BR>%nException level: %-5p <BR>%nException type: %c [%x] <BR>%n%m <BR>%n < ;HR Size=1>" />

 

 

 

 "InfoAppender" type="log4net.Appender.RollingFileAppender< span style="color: #800000;">">

 "File" value="Log\LogInfo\ " />

 "AppendToFile" value="true" />

 "MaxFileSize" value="10240" />

 "MaxSizeRollBackups" value="100" />

 "StaticLogFileName" value="false" />

 "DatePattern" value="yyyyMMdd".htm"< span style="color: #800000;">" />

 "RollingStyle" value="Date" />

 

 "log4net.Layout.PatternLayout">

 "ConversionPattern" value="<HR COLOR=blue>%nlog Time: %d [%t] <BR>%nLog level:%-5p <BR>%nLog type:%c [%x] <BR>%n%m <BR>%n < ;HR Size=1>" />

View Code

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Add content to the AssemblyInfo.cs file

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Add a help class

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public class LogHelper

 {

 public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo ");

 public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror ");

 public static void WriteLog(string info)

 {

 if (loginfo.IsInfoEnabled)

 {

 loginfo.Info(info);

}

}



 public static void WriteLog(string info, Exception ex)

 {

 if (logerror.IsErrorEnabled)

 {

 logerror.Error(info, ex);

}

}

 }

Call the helper class

protected void Page_Load(object sender, EventArgs e)

 {

 try

 {

 string a = "FF";

 int b = Convert.ToInt32(a);

}

 catch (Exception ex){

 LogHelper.WriteLog(ex.Message.ToString(), ex);

}

 }

share picture share picture 

 

 

 

 

 "ALL" />

 ref ref="SysAppender" />

 

 

 "WebLogger">

 "DEBUG" />

 

 "SysAppender" type="log4net.Appender.RollingFileAppender,log4net">

 "File" value="log/" />

 "AppendToFile" value="true" />

 "RollingStyle" value="Date" />

 "DatePattern" value=""Logs_"yyyyMMdd".txt"< /span>" />

 "StaticLogFileName" value="false" />

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

 

 

 "consoleApp" type="log4net.Appender.ConsoleAppender,log4net">

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

View Code

 

 

 

 

 "ALL" />

 ref ref="SysAppender" />

 

 

 "WebLogger">

 "DEBUG" />

 

 "SysAppender" type="log4net.Appender.RollingFileAppender,log4net">

 "File" value="log/" />

 "AppendToFile" value="true" />

 "RollingStyle" value="Date" />

 "DatePattern" value=""Logs_"yyyyMMdd".txt"< /span>" />

 "StaticLogFileName" value="false" />

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

 

 

 "consoleApp" type="log4net.Appender.ConsoleAppender,log4net">

 "log4net.Layout.PatternLayout,log4net">

 "ConversionPattern" value="%d [%t] %-5p% c-%m%n" />

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 "logerror">

 "ALL" />

 ref ref="ErrorAppender" />

 

 

 "loginfo">

 "ALL" />

 ref ref="InfoAppender" />

 

 

 "ErrorAppender" type="log4net.Appender.RollingFileAppender< span style="color: #800000;">">

 "AppendToFile" value="true" />

 "MaxSizeRollBackups" value="100" />

 "MaxFileSize" value="10240" />

 "StaticLogFileName" value="false" />

 "DatePattern" value="yyyyMMdd".htm"< span style="color: #800000;">" />

 "RollingStyle" value="Date" />

 

 "log4net.Layout.PatternLayout">

 "ConversionPattern" value="<HR COLOR=red>%nException Time: %d [%t] <BR>%nException level: %-5p <BR>%nException type: %c [%x] <BR>%n%m <BR>%n < ;HR Size=1>" />

 

 

 

 "InfoAppender" type="log4net.Appender.RollingFileAppender< span style="color: #800000;">">

 "File" value="Log\LogInfo\ " />

    "AppendToFile" value="true" />

    "MaxFileSize" value="10240" />

    "MaxSizeRollBackups" value="100" />

    "StaticLogFileName" value="false" />

    "DatePattern" value="yyyyMMdd".htm"" />

    "RollingStyle" value="Date" />

    

    "log4net.Layout.PatternLayout">

      "ConversionPattern" value="<HR COLOR=blue>%n日志时间：%d [%t] <BR>%n日志级别：%-5p <BR>%n日 志 类：%c [%x] <BR>%n%m <BR>%n <HR Size=1>"  />

View Code



  

  "logerror">

    "ALL" />

    ref ref="ErrorAppender" />

  

  

  "loginfo">

    "ALL" />

    ref ref="InfoAppender" />

  

  

  "ErrorAppender" type="log4net.Appender.RollingFileAppender">

    "File" value="Log\LogError\" />

    "AppendToFile" value="true" />

    "MaxSizeRollBackups" value="100" />

    "MaxFileSize" value="10240" />

    "StaticLogFileName" value="false" />

    "DatePattern" value="yyyyMMdd".htm"" />

    "RollingStyle" value="Date" />

    

    "log4net.Layout.PatternLayout">

      "ConversionPattern" value="<HR COLOR=red>%n异常时间：%d [%t] <BR>%n异常级别：%-5p <BR>%n异 常 类：%c [%x] <BR>%n%m <BR>%n <HR Size=1>"  />

    

  

  

  "InfoAppender" type="log4net.Appender.RollingFileAppender">

    "File" value="Log\LogInfo\" />

    "AppendToFile" value="true" />

    "MaxFileSize" value="10240" />

    "MaxSizeRollBackups" value="100" />

    "StaticLogFileName" value="false" />

    "DatePattern" value="yyyyMMdd".htm"" />

    "RollingStyle" value="Date" />

    

    "log4net.Layout.PatternLayout">

      "ConversionPattern" value="<HR COLOR=blue>%n日志时间：%d [%t] <BR>%n日志级别：%-5p <BR>%n日 志 类：%c [%x] <BR>%n%m <BR>%n <HR Size=1>"  />

    

  


public class LogHelper

 {

        public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");

        public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");

        public static void WriteLog(string info)

 {

            if (loginfo.IsInfoEnabled)

 {

                loginfo.Info(info);

}

}



        public static void WriteLog(string info, Exception ex)

 {

            if (logerror.IsErrorEnabled)

 {

                logerror.Error(info, ex);

}

}

    }

protected void Page_Load(object sender, EventArgs e)

 {

 try

 {

                string a = "FF";

                int b = Convert.ToInt32(a);

}

            catch (Exception ex){

                LogHelper.WriteLog(ex.Message.ToString(), ex);

}

 }

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