1, XmlConfigurator

创建添加一个Tracer project，引用nuget上最新的log4net

在Tracer里新增一个AppLog类：

public static class AppLog    {        private static ILog log;        static AppLog()        {            string path = System.IO.Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, "log4net.config");            XmlConfigurator.ConfigureAndWatch(new FileInfo(path));            log = LogManager.GetLogger(typeof(AppLog));            WriteHeaderInfo();        }        public static void Debug(object message)        {            log.Debug(message);        }        public static void Debug(string format, params object[] args)        {            log.DebugFormat(format, args);        }        public static void Info(object message)        {            log.Info(message);        }        public static void Info(string format, params object[] args)        {            log.InfoFormat(format, args);        }        public static void Warn(object message)        {            log.Warn(message);        }        public static void Warn(object message, Exception exception)        {            log.Warn(message, exception);        }        public static void WarnFormatted(string format, params object[] args)        {            log.WarnFormat(format, args);        }        public static void Error(object message)        {            log.Error(message);        }        public static void Error(object message, Exception exception)        {            log.Error(message, exception);        }        public static void ErrorFormatted(string format, params object[] args)        {            log.ErrorFormat(format, args);        }        public static void Fatal(object message)        {            log.Fatal(message);        }        public static void Fatal(object message, Exception exception)        {            log.Fatal(message, exception);        }        public static void FatalFormatted(string format, params object[] args)        {            log.FatalFormat(format, args);        }        /// 
        /// Write the logging header, e.g. some system informations        /// 
        /// 
             private static void WriteHeaderInfo()        {            System.Reflection.Assembly myAssembly = System.Reflection.Assembly.GetExecutingAssembly();            System.Version appVersion = myAssembly.GetName().Version;            string strDomainName = string.Empty;            string strUserName = string.Empty;            string OSType = Is64BitWindowsOS() ? "64-bit" : "32-bit";            FileInfo file = new FileInfo(myAssembly.Location);            string createDate = file.CreationTime.ToString("yyyy-MM-dd HH:mm:ss");            log.Info("==============================================================================================================");            log.Info(string.Empty);            log.Info(string.Format("\t[Version: {0}] Logging started at {1}", appVersion.ToString(), System.DateTime.Now.ToString()));            log.Info(string.Empty);            log.Info(string.Format("\tOS Version: {0}({1})\tCLR Version: {2}", System.Environment.OSVersion.ToString(), OSType, System.Environment.Version.ToString()));            log.Info(string.Format("\tLanguage: {0}\tUI Language: {1}", System.Threading.Thread.CurrentThread.CurrentCulture.DisplayName, System.Threading.Thread.CurrentThread.CurrentUICulture.DisplayName));            log.Info(string.Format("\tUser Domain: {0}\tUsername(Local Session):   {1}", System.Environment.UserDomainName, System.Environment.UserName));            log.Info(string.Format("\tUser Domain: {0}\tUsername(Network Session): {1}", strDomainName, strUserName));            log.Info(string.Format("\tBuild Created Time: {0}", createDate));            log.Info(string.Empty);            log.Info("==============================================================================================================");            log.Info(string.Empty);        }        private static bool Is64BitWindowsOS()        {            bool is64Bit = false;            try            {                string cpuType = System.Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE");                string originalCpuTypeOr = System.Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432");                if (string.Compare(cpuType, "amd64", true) == 0 || string.Compare(originalCpuTypeOr, "amd64", true) == 0)                {                    is64Bit = true;                }                else                {                    is64Bit = false;                }            }            catch (System.Security.SecurityException e)            {                System.Diagnostics.Debug.Fail("Cannot detect the process bitness\n" + e.ToString());            }            catch (Exception ex)            {                System.Diagnostics.Debug.Fail("Cannot detect the process bitness\n" + ex.ToString());            }            return is64Bit;        }    }

在Tracer里创建一个log4net.config文件，并且确定这个文件在编译的时候会复制到对应文件夹

这样，当其他app想写log，只需要调用AppLog的相关静态方法。

Tracer.AppLog.Debug("User calls method...Interval:{0}ms", Interval);Tracer.AppLog.Debug("Start！");

 

 

2， BasicConfigurator

log4net也支持不用config文件的方式

比如，在上面的例子，我们可以不创建log4net.config文件，并且将AppLog的静态创建方法改写如下：

static AppLog()        {            PatternLayout layout = new PatternLayout("%date{MMM/dd/yyyy HH:mm:ss,fff} [%thread] %-5level %logger %ndc – %message%newline");            LevelMatchFilter filter = new LevelMatchFilter();            filter.LevelToMatch = Level.All;            filter.ActivateOptions();            RollingFileAppender appender = new RollingFileAppender();            appender.File = Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, "common.log");            appender.ImmediateFlush = true;            appender.AppendToFile = true;            appender.RollingStyle = RollingFileAppender.RollingMode.Date;            appender.DatePattern = "-yyyy-MM-dd";            appender.LockingModel = new FileAppender.MinimalLock();            appender.Name = string.Format("{0}Appender", "AppLog");            appender.AddFilter(filter);            appender.Layout = layout;            appender.ActivateOptions();            string repositoryName = string.Format("{0}Repository", "AppLog");            ILoggerRepository repository = LoggerManager.CreateRepository(repositoryName);            string loggerName = string.Format("{0}Logger", "AppLog");            BasicConfigurator.Configure(repository, appender);            log = LogManager.GetLogger(repositoryName, loggerName);//这是重点            WriteHeaderInfo();        }

 

 

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