log4net 純代碼配置

當須要輸出的日誌不少的時候，每次修改config都很麻煩，因而想可不能夠動態生成。

網上找的案例都是獲取單個appender/logger的，此處例子是任意logger，appender相同

log4net的pattern裏面關於線程的顯示規則是，有線程名用名字，無線程名用線程號。Nlog 能夠分別指定

例子以下

 1         public static ILog GetLoggerByName(string name)  2  {  3             if (LogManager.Exists(name) == null)  4  {  5 
 6                 // Pattern Layout defined
 7                 PatternLayout patternLayout = new PatternLayout();  8                 patternLayout.ConversionPattern = "%date %thread %level %logger - %message%newline";  9  patternLayout.ActivateOptions(); 10 
11                 // configurating the RollingFileAppender object
12                 RollingFileAppender appender = new RollingFileAppender(); 13                 appender.Name = name; 14                 appender.AppendToFile = true; 15                 appender.File = $"Log\\{name}.log"; 16                 appender.StaticLogFileName = true; 17                 appender.PreserveLogFileNameExtension = true; 18                 appender.LockingModel = new FileAppender.MinimalLock(); 19                 appender.Layout = patternLayout; 20                 appender.MaxSizeRollBackups = 512; 21                 appender.MaximumFileSize = "150MB"; 22                 appender.RollingStyle = RollingFileAppender.RollingMode.Composite; 23  appender.ActivateOptions(); 24 
25                 Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); 26 
27                 var loger = hierarchy.GetLogger(name, hierarchy.LoggerFactory); //!!! 此處寫法是重點，不容更改
28                 loger.Hierarchy = hierarchy; 29  loger.AddAppender(appender); 30                 loger.Level = Level.All; 31                 
32                 BasicConfigurator.Configure();//!!! 此處寫法是重點，不容更改
33 
34                 var appname = Assembly.GetEntryAssembly().GetName().Name; 35                 var version= Assembly.GetEntryAssembly().GetName().Version; 36                 loger.Log(Level.Info, $"Log name {name} created for Application: {appname} Version: {version}", null); 37  } 38             var log = LogManager.GetLogger(name); 39             return log; 40         }

 1        public static void SetMinLogLevel(Level level,string name="")  2  {  3             if(string.IsNullOrEmpty(name))  4  {  5                 Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository();  6                 hierarchy.Threshold = level;  7  }  8             else
 9  { 10                 Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); 11                 if(hierarchy.Exists(name) is Logger loger) 12  { 13                     loger.Level = level; 14  } 15  } 16         }