C# log4net纯代码设置参数

╰半夏微凉° 2022-11-25 05:23 210阅读 0赞

### `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;
            }
        }
    }