代码配置log4net

主要简单的项目不想写配置文件，所以研究了一下不需要配置文件下配置long4net写日志。
主要是配置文件写配置直接上代码，也以防我自己忘记记录一下.

    private  Hierarchy _hierarchy = null;
        private  ILoggerRepository _repostitory =null;
        private PatternLayout _patternLayout = null;
        private Logger _logger = null;

    var repostitorys = LogManager.GetAllRepositories();
            foreach (var loggrepostitory in repostitorys)
            {
                if (!loggrepostitory.Name.Equals(RepositoriesName)) continue;
                _repostitory = loggrepostitory;
                break;
            }
            if (_repostitory == null)
            {
                //1.创建Repositorie2.获取默认
                _repostitory = LogManager.CreateRepository(RepositoriesName);
                //_repostitory = LogManager.GetRepository(Assembly.GetEntryAssembly());
            }
            _hierarchy = (Hierarchy)_repostitory;

      SetPatternLayout();
      RollingFileAppender fileAppender = new RollingFileAppender
            {
                Name = LoggerName,
                Layout = _patternLayout,
                File = base.FileAppenderFile,
                AppendToFile = true,
                MaxSizeRollBackups = 10,
                MaxFileSize = 100,
                RollingStyle = RollingFileAppender.RollingMode.Date,
                DatePattern = "yyyyMMdd"
            };
            fileAppender.AddFilter(SetLevelRangeFilter());
            fileAppender.ActivateOptions();
      _hierarchy.Root.Level = _hierarchy.LevelMap["ALL"];
            _hierarchy.Root.AddAppender(appender);
      BasicConfigurator.Configure(_repostitory);

输出格式方法

    /// <summary>
        /// 设置layout输出格式
        /// </summary>
        private void SetPatternLayout()
        {

            _patternLayout = new PatternLayout {ConversionPattern = base.ConversionPattern};
            _patternLayout.ActivateOptions();
        }

过滤日志级别

    /// <summary>
        /// 设置日志过滤输出级别
        /// </summary>
        /// <returns></returns>
        private LevelRangeFilter SetLevelRangeFilter()
        {
            var levelrangefilter = new LevelRangeFilter();
            var map = (_hierarchy ==null)? LogManager.GetRepository().LevelMap:_hierarchy.LevelMap;
            levelrangefilter.LevelMax = map[base.LevelMax];
            levelrangefilter.LevelMin = map[base.LevelMin];
            return levelrangefilter;
        }

基本上就这些，如果你还有配置数据库或者其他的参照官网日志配置
官网配置示范链接
这里放一下我的日志帮助类