log4net 纯代码配置

忘是亡心i 2021-12-12 20:47 303阅读 0赞

当需要输出的日志很多的时候，每次修改config都很麻烦，于是想可不可以动态生成。

网上找的案例都是获取单个appender/logger的，此处例子是任意logger，appender相同

log4net的pattern里面关于线程的显示规则是，有线程名用名字，无线程名用线程号。Nlog 可以分别指定

例子如下

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); //!!! 此处写法是重点，不容更改
    28                 loger.Hierarchy = hierarchy;
    29                 loger.AddAppender(appender);
    30                 loger.Level = Level.All;
    31                 
    32                 BasicConfigurator.Configure();//!!! 此处写法是重点，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         }

转载于:https://www.cnblogs.com/hahanonym/p/11124384.html