配置log4net的RollingFileAppender进行代码滚动每个应用程序一旦启动

Question

我想创建创建一个新的文件中的每个程序启动时间log4net的RollingFileAppender进行。如果文件变大，它可以滚动，但每次应用程序启动时都必须滚动。如果在配置中配置了另一个appender，则不应该添加appender。本质上，创建一个可以通过更改配置文件来覆盖的默认日志配置。

Answer 1

拼凑了一些其他职位后，我终于得到了这个工作。该实现是在一个静态包装类中。您只需将此代码粘贴到您的应用程序中，设置位置以创建该文件，然后在应用程序启动时调用Log.Configure（）。

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Threading; 
using System.Windows.Forms; 
using System.Windows.Threading; 
using log4net; 
using log4net.Core; 
using log4net.Appender; 
using log4net.Repository.Hierarchy; 
using System.Reflection; 
using System.IO; 

namespace [Your Namespace] 
{ 
    public static class Log 
    { 
     private static bool isConfigured = false; 
     private static ILog iLog; 

     public static void Configure() 
     { 
      if (isConfigured) 
       return; 

      var loggerName = typeof(DiagnosticsManager).FullName; 

      var logger = (log4net.Repository.Hierarchy.Logger)log4net.LogManager.GetRepository().GetLogger(loggerName); 
      var ilogger = log4net.LogManager.GetRepository().GetLogger(loggerName); 

      //Add the default log appender if none exist 
      if(logger.Appenders.Count == 0) 
      { 
       var directoryName = "[Your directory name here. e.c. 'C:\ProgramData\AppName\Logs']"; 

       //If the directory doesn't exist then create it 
       if(!Directory.Exists(directoryName)) 
        Directory.CreateDirectory(directoryName); 

       var fileName = Path.Combine(directoryName, "[Your static file name here. e.c. 'AppName.log']"); 

       //Create the rolling file appender 
       var appender = new log4net.Appender.RollingFileAppender(); 
       appender.Name = "RollingFileAppender"; 
       appender.File = fileName; 
       appender.StaticLogFileName = true; 
       appender.AppendToFile = false; 
       appender.RollingStyle = log4net.Appender.RollingFileAppender.RollingMode.Size; 
       appender.MaxSizeRollBackups = 10; 
       appender.MaximumFileSize = "10MB"; 
       appender.PreserveLogFileNameExtension = true; 

       //Configure the layout of the trace message write 
       var layout = new log4net.Layout.PatternLayout() 
       { 
        ConversionPattern = "%date{hh:mm:ss.fff} [%thread] %-5level - %message%newline" 
       }; 
       appender.Layout = layout; 
       layout.ActivateOptions(); 

       //Let log4net configure itself based on the values provided 
       appender.ActivateOptions(); 
       log4net.Config.BasicConfigurator.Configure(appender); 
      } 

      iLog = LogManager.GetLogger(loggerName); 
      isConfigured = true; 

      Info("Logging Configured at " + DateTime.Now.ToString("g")); 
     } 

     public static event EventHandler<ExceptionLoggedEventArgs> ExceptionLogged; 

     public static void Debug(object message) { Configure(); iLog.Debug(message); } 
     public static void Debug(object message, Exception exception) { Configure(); iLog.Debug(message, exception); } 

     public static void Error(object message) { Configure(); iLog.Error(message); } 
     public static void Error(object message, Exception exception) { Configure(); iLog.Error(message, exception); } 

     public static void Fatal(object message) { Configure(); iLog.Fatal(message); } 
     public static void Fatal(object message, Exception exception) { Configure(); iLog.Fatal(message, exception); } 

     public static void Info(object message) { Configure(); iLog.Info(message); } 
     public static void Info(object message, Exception exception) { Configure(); iLog.Info(message, exception); } 

     public static void Warn(object message) { Configure(); iLog.Warn(message); } 
     public static void Warn(object message, Exception exception) { Configure(); iLog.Warn(message, exception); } 

    } 

}