WinForm下使用 log4net
在C# winForm程序中添加log4net
1. 引用 log4net.dll
2. 添加 app.config 内容如下：
<?xml version="1.0" encoding="utf-8" ?><configuration> <log4net> <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender"> <param name="File" value="Log\Log.txt" /> <param name="AppendToFile" value="true" /> <param name="MaxSizeRollBackups" value="100" /> <param name="MaximumFileSize" value="2MB" /> <param name="RollingStyle" value="Size" /> <param name="StaticLogFileName" value="true" /> <layout type="log4net.Layout.PatternLayout"> <param name="ConversionPattern" value="%-5p %d [%c] %m%n" /> </layout> </appender> <root> <level value="all" /> <appender-ref ref="RollingLogFileAppender" /> </root> </log4net></configuration> |
具体设置说明可在网上找。
3. 在 Properties/AssemblyInfo.cs 添加 [assembly: log4net.Config.DOMConfigurator(Watch=true)]
4. 在代码中添加日志
定义LOG private static log4net.ILog LOG = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
写入日志 LOG.Info("窗体打开");
5. 如果要记录所有未处理异常，修改 Program.cs 如下
using System;using System.Collections.Generic;using System.Windows.Forms;using System.Reflection;namespace ExceptionTest{ static class Program { static log4net.ILog LOG = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); /// <summary> /// 应用程序的主入口点。 /// </summary> [STAThread] static void Main() { //捕获未处理异常 Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException); Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException); AppDomain.CurrentDomain.UnhandledException +=new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e) { LOG.Error(e.Exception); //throw new Exception("线程未知异常", e.Exception); MessageBox.Show(e.Exception.Message, "线程异常", MessageBoxButtons.OK, MessageBoxIcon.Error); Application.Exit(); } static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) { Exception ex = e.ExceptionObject as Exception; LOG.Error(ex); MessageBox.Show(ex.Message, "应用程序异常", MessageBoxButtons.OK, MessageBoxIcon.Error); Application.Exit(); } }} |
在Asp.net 网站中添加log4net
1. 引用 log4net.dll
2. 配置Web.config 如下
<?xml version="1.0"?><configuration> <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/> </configSections> <appSettings/> <connectionStrings/> <system.web> <compilation debug="true"/> <authentication mode="Windows"/> </system.web> <!--日志--> <log4net> <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender"> <param name="File" value="D:\test\Log.txt" /> <param name="AppendToFile" value="true" /> <param name="MaxSizeRollBackups" value="100" /> <param name="MaximumFileSize" value="2MB" /> <param name="RollingStyle" value="Size" /> <param name="StaticLogFileName" value="true" /> <layout type="log4net.Layout.PatternLayout"> <param name="ConversionPattern" value="%-5p %d [%c] %m%n" /> </layout> </appender> <root> <level value="all" /> <appender-ref ref="RollingLogFileAppender" /> </root> </log4net></configuration> |
3. 添加 Global.asax 内容如下：
private static log4net.ILog LOG = log4net.LogManager.GetLogger("Log4net 测试网站");void Application_Start(object sender, EventArgs e) { // 在应用程序启动时运行的代码 log4net.Config.DOMConfigurator.Configure(); LOG.Info("网站启动");}void Application_Error(object sender, EventArgs e) { // 在出现未处理的错误时运行的代码 Exception ex = HttpContext.Current.Server.GetLastError(); LOG.Error("未处理异常", ex);} |
将站点的所有未处理异常记录到log4net中。
4. 如何使用
定义LOG private static log4net.ILog LOG = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
写入日志 LOG.Info("网站启动");
