C# log4net纯代码设置参数

log4net.config参数设置

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <log4net>
    <root>
      <level value="ALL" />
      <appender-ref ref="console" />
      <appender-ref ref="file" />
    </root>
    <appender name="console" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %level %logger %line - %message%newline" />
      </layout>
    </appender>
    <appender name="file" type="log4net.Appender.RollingFileAppender">
      <file value="app.log" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="5" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %level %logger - %message%newline" />
      </layout>
    </appender>
  </log4net>
</configuration>

对应的代码配置

using log4net;
using log4net.Appender;
using log4net.Core;
using log4net.Layout;
using log4net.Repository.Hierarchy;

namespace Log4NetHelper
{
    public class LogHelper
    {
        public static void Setup()
        {
            // 写入文档时的日志格式
            var patternLayout = new PatternLayout
            {
                ConversionPattern = "%date [%thread] %level %logger - %message%newline"
            };
            patternLayout.ActivateOptions();

            // 文档日志
            var roller = new RollingFileAppender
            {
                File = "app.log",
                AppendToFile = true,
                RollingStyle = RollingFileAppender.RollingMode.Size,
                MaxSizeRollBackups = 5,
                MaximumFileSize = "10MB",
                StaticLogFileName = true,
                Layout = patternLayout
            };
            roller.ActivateOptions();

            // 命令行日志格式
            patternLayout = new PatternLayout
            {
                ConversionPattern = "%date %level %logger %line - %message %newline"
            };
            patternLayout.ActivateOptions();

            // 命令行日志
            var consoleAppender = new ConsoleAppender
            {
                Name = "console",
                Layout = patternLayout
            };
            consoleAppender.ActivateOptions();

            Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository();
            hierarchy.Root.Level = Level.All;
            hierarchy.Root.AddAppender(roller);
            hierarchy.Root.AddAppender(consoleAppender);
            hierarchy.Configured = true;
        }
    }
}