Log4net 重复记录整体

Question

我最近将 log4net 日志记录从使用配置文件切换为以编程方式设置。这导致 nhiberate 条目重复 2 次，有时甚至 3 次。这是代码。它使用一个类似于“logger1|debug,logger2|info”的字符串，

    private void SetupLog4netLoggers()
    {
        IAppender appender = GetAppender();

        SetupRootLogger(appender);

        foreach (string logger in Loggers)
        {
            CommaStringList parts = new CommaStringList(logger, '|');
            if (parts.Count != 2)
                continue;

            AddLogger(parts[0], parts[1], appender);
        }

        log.Debug("Log4net has been setup");
    }

    private IAppender GetAppender()
    {
        RollingFileAppender appender = new RollingFileAppender();
        appender.File = LogFile;
        appender.AppendToFile = true;
        appender.MaximumFileSize = MaximumFileSize;
        appender.MaxSizeRollBackups = MaximumBackups;

        PatternLayout layout = new PatternLayout(PATTERN);
        layout.ActivateOptions();

        appender.Layout = layout;
        appender.ActivateOptions();

        return appender;
    }

    private void SetupRootLogger(IAppender appender)
    {
        Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository();

        hierarchy.Root.RemoveAllAppenders();
        hierarchy.Root.AddAppender(appender);
        hierarchy.Root.Level = GetLevel(RootLevel);

        hierarchy.Configured = true;

        log.Debug("Root logger setup, level[" + RootLevel + "]");
    }

    private void AddLogger(string name, string level, IAppender appender)
    {
        Logger logger = LogManager.GetRepository().GetLogger(name)as Logger;
        if (logger == null)
            return;

        logger.Level = GetLevel(level);
        logger.Additivity = false;
        logger.RemoveAllAppenders();
        logger.AddAppender(appender);

        log.Debug("logger[" + name + "] added, level[" + level + "]");
    }

这是我们在日志中看到的示例...

2010-05-06 15:50:39,781 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose()
2010-05-06 15:50:39,781 [1] DEBUG NHibernate.Impl.SessionImpl - closing session
2010-05-06 15:50:39,781 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true)
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose()
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - closing session
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true)
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - running ISession.Dispose()
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.Impl.SessionImpl - closing session
2010-05-06 15:50:39,796 [1] DEBUG NHibernate.AdoNet.AbstractBatcher - running BatcherImpl.Dispose(true)

欢迎任何提示。

Answer 1

我不太确定发生了什么，但我会尝试删除以下行：

logger.Additivity = false;
logger.RemoveAllAppenders();
logger.AddAppender(appender);

记录器无论如何都应该从根附加器继承附加器。当您以这种方式添加附加程序时，也许 log4net 会混淆一些东西，尽管情况不应该如此......

Answer 2

我认为答案是——它实际上并不是在写重复的内容。如果不调试 NHibernate 代码，我无法确定，但我猜测它可能只是将其写出来或重复执行相同的操作。

无论如何，我们都会回到使用配置文件，所以必须看看我是否仍然得到可能的重复项。