C#log4net日志

水深无声 2023-07-10 11:30 14阅读 0赞

首先在项目中添加NuGet包

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1kxMTcyMjE1Nzg0_size_16_color_FFFFFF_t_70][]

在AssemblyInfo.cs文件中添加\[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Log4net.config", ConfigFileExtension = "config", Watch = true)\]

![20200302135721143.png][]

在bin\\Debug目录下会看到有log4net的两个文件，然后需要创建一个log4net的配置文件，可以创建个文本文档后另存为所有文件.config获得

![20200302140519935.png][]

用文本文档打开配置文件输入

<?xml version="1.0" encoding="utf-8" ?>
    <configuration>
      <configSections>
        <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
      </configSections>
      <log4net>
        <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
          <file value="Logging\logfile.log"/>
          <appendToFile value="true"/>
          <rollingStyle value="Composite"/>
          <datePattern value="yyyyMMdd"/>
          <maxSizeRollBackups value="10"/>
          <maximumFileSize value="50MB"/>
          <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date [%thread] %-5level - %message%newline"/>
          </layout>
        </appender>
        <root>
          <level value="All"/>
          <appender-ref ref="RollingLogFileAppender"/>
        </root>
      </log4net>
      <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2"/>
      </startup>
    </configuration>

最后再创建一个AppLog.cs的类

using log4net;
    using log4net.Config;
    using System;
    using System.IO;
    using System.Windows.Forms;
    
    namespace DLPrinter.Common {
        public class AppLog {
            private static readonly ILog log;
            static AppLog() {
                XmlConfigurator.ConfigureAndWatch(new FileInfo(AppDomain.CurrentDomain.SetupInformation.ConfigurationFile));
                log = LogManager.GetLogger(typeof(AppLog));
                
            }
            public static void Debug(object message) {
                log.Debug(message);
            }
            public static void DebugFormatted(string format, params object[] args) {
                log.DebugFormat(format, args);
            }
            public static void Info(object message) {
                log.Info(message);
            }
            public static void InfoFormatted(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);
            }
        }
    }

在其他代码中想在日志输出就可以直接调用AppLog.Debug("");

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1kxMTcyMjE1Nzg0_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200302135440807.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1kxMTcyMjE1Nzg0,size_16,color_FFFFFF,t_70
[20200302135721143.png]: https://img-blog.csdnimg.cn/20200302135721143.png
[20200302140519935.png]: https://img-blog.csdnimg.cn/20200302140519935.png