Log4net使用(一)-白红宇

Log4net使用(一)

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发布时间：2019-06-14

本文共 13073 字，大约阅读时间需要 43 分钟。

日志记录到根目录Log文件夹，文件夹中分LogError与LogInfo文件夹

web.config配置：

在mvc过滤器中记录异常信息

public void OnException(ExceptionContext filterContext)        {            lock (obj)            {                var httpContext = filterContext.RequestContext.HttpContext.Request;                // 在出现未处理的错误时运行的代码                if (!httpContext.Url.ToString().Contains("."))                {                    string logText = "\r\n-------------  异常信息   ---------------------------------------------------------------";                    logText += "\r\n发生时间：" + DateTime.Now.ToString();                    logText += "\r\n发生异常页：" + httpContext.Url.ToString();                    logText += "\r\n异常信息：" + filterContext.Exception.Message;                    logText += "\r\n错误源：" + filterContext.Exception.Source;                    logText += "\r\n堆栈信息：" + filterContext.Exception.StackTrace;                    logText += "\r\n-----------------------------------------------------------------------------------------\r\n";                    //日志物理路径                    string path = httpContext.MapPath("~/Log/");                    WebLog.WriteLog(logText, path);                    filterContext.RequestContext.HttpContext.Server.ClearError();                                        //filterContext.RequestContext.HttpContext.Response.Redirect("/Home/Error");                }            }        }

Global.asax.cs,设置

public class MvcApplication : System.Web.HttpApplication    {        public static void RegisterGlobalFilters(GlobalFilterCollection filters)        {            filters.Add(new HandleErrorAttribute());        }        public static void RegisterRoutes(RouteCollection routes)        {            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");            routes.MapRoute(                "Default", // Route name                "{controller}/{action}/{id}", // URL with parameters                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults            );        }        protected void Application_Start()        {            AreaRegistration.RegisterAllAreas();            RegisterGlobalFilters(GlobalFilters.Filters);            RegisterRoutes(RouteTable.Routes);            //配置日志,读取配置信息            LogHelper.SetConfig();        }        protected void Application_Error(Object sender, EventArgs e)        {            //记录错误日志            Exception objExp = HttpContext.Current.Server.GetLastError();            LogHelper.WriteLog("\r\n客户机IP:" + Request.UserHostAddress + "\r\n错误地址:" + Request.Url + "\r\n异常信息:" + Server.GetLastError().Message, objExp);        }    }

LogHelper.cs设置

public  class LogHelper    {        public  LogHelper()        {                    }        public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");   //选择
     
      的配置         public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");   //选择
      
       的配置         public static void SetConfig()        {            log4net.Config.XmlConfigurator.Configure();        }        /// 
               /// 设置文件路径        /// 
        /// 
               public static void SetConfig(FileInfo configFile)        {            log4net.Config.XmlConfigurator.Configure(configFile);        }        /// 
               /// 写系统信息日志        /// 
        /// 
               public static void WriteLog(string info)        {            if (loginfo.IsInfoEnabled)            {                loginfo.Info(info);            }        }        /// 
               /// 写错误日志        /// 
        /// 
               /// 
               public static void WriteLog(string Error, Exception se)        {            if (logerror.IsErrorEnabled)            {                logerror.Error(Error, se);            }        }    }

LogError 记录效果：

客户机IP:::1错误地址:http://localhost:8134/Admin/Scripts/js/ligerui.expand.js异常信息:未找到路径“/Admin/Scripts/js/ligerui.expand.js”的控制器或该控制器未实现 IController。  System.Web.HttpException (0x80004005): 未找到路径“/Admin/Scripts/js/ligerui.expand.js”的控制器或该控制器未实现 IController。   在 System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType)   在 System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName)   在 System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory)   在 System.Web.Mvc.MvcHandler.<>c__DisplayClass6.
     
      b__2()   在 System.Web.Mvc.SecurityUtil.<>c__DisplayClassb`1.
      
       b__a()   在 System.Web.Mvc.SecurityUtil.
       
        b__0(Action f)   在 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action)   在 System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust[TResult](Func`1 func)   在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state)   在 System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state)   在 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData)   在 System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()   在 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

LogInfo记录效果：

客户机IP:::1错误地址:http://localhost:8134/Admin/Department/GetDeptGridTree异常信息:可为空的对象必须具有一个值。 System.InvalidOperationException: 可为空的对象必须具有一个值。   在 System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)   在 System.Nullable`1.get_Value()省略异常描述···

也可独立出配置文件：

using System;using System.Collections.Generic;using System.ComponentModel;using System.IO;using System.Linq;using System.Text;using System.Threading.Tasks;namespace PrintService.Helper{    public enum LogCategory    {        [Description("调试")]        Debug,        [Description("信息")]        Info,        [Description("警告")]        Warn,        [Description("错误")]        Error,        [Description("过错")]        Fault    }    public class LogHelper    {        private static readonly log4net.ILog infoLogger = log4net.LogManager.GetLogger("loginfo");     //选择
     
      的配置         private static readonly log4net.ILog errorLogger = log4net.LogManager.GetLogger("logerror");   //选择
      
       的配置         private static readonly log4net.ILog warnLogger = log4net.LogManager.GetLogger("logwarn");     //选择
       
        的配置         private static readonly log4net.ILog debugLogger = log4net.LogManager.GetLogger("logdebug");   //选择
        
         的配置         static LogHelper()        {            string configPath = Path.Combine(PathHelper.ConfigDir, "LogServiceConfig.xml");            if (!File.Exists(configPath))            {                throw new FileNotFoundException("找不到日志服务配置文件！");            }            log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(configPath));        }        /// 
                 /// 记录log信息到文件中        /// 
        /// 
         需要记录的信息        /// 
         log类型        /// 
         异常信息        public static void Log(string message, LogCategory category, Exception exception = null)        {            try            {                switch (category)                {                    case LogCategory.Debug:                        {                            debugLogger.Debug(message);                            break;                        }                    case LogCategory.Info:                        {                            infoLogger.Info(message);                            break;                        }                    case LogCategory.Warn:                        {                            if (null == exception)                            {                                warnLogger.Warn(message);                            }                            else                            {                                warnLogger.Warn(message, exception);                            }                            break;                        }                    case LogCategory.Error:                        {                            if (null == exception)                            {                                errorLogger.Error(message);                            }                            else                            {                                errorLogger.Error(message, exception);                            }                            break;                        }                }            }            catch (Exception ex)            {                throw;            }        }        /// 
                 /// 写基本信息日志        /// 
        /// 
                 public static void Log(string mesage)        {            Log(mesage, LogCategory.Info, null);        }        /// 
                 /// 出错信息日志        /// 
        /// 
                 public static void Log(Exception exception)        {            Log("error message:", LogCategory.Error, exception);        }    }}using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace PrintService.Helper{    /// 
             /// 路径管理类    /// 
    public class PathHelper    {        private static string _appDir;        private static string _binDir;        private static string _configDir;        private static string _dataDir;        static PathHelper()        {            //网站与后台服务路径不同，网站需要上翻一级;后台服务则不需要;通过判断使用的配置文件是否是web.config来判断是网站，还是服务。            bool isWeb = false;            var appDomain = AppDomain.CurrentDomain;            if (appDomain != null)            {                var startInfo = appDomain.SetupInformation;                if (startInfo != null)                {                    if (startInfo.ConfigurationFile != null)                    {                        if (startInfo.ConfigurationFile.EndsWith("web.config", StringComparison.OrdinalIgnoreCase))                        {                            isWeb = true;   //配置文件是网站                        }                    }                }            }            _appDir = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().CodeBase.Substring(8))); //获取此处配置文件在程序目录            //_appDir = _appDir.Substring(0, _appDir.Length - 4);            if (isWeb)            {                _appDir = _appDir.Substring(0, _appDir.LastIndexOf("\\", StringComparison.Ordinal));  // LastIndexOf("\\") => LastIndexOf(@"\")，向上翻一级            }            _binDir = Path.Combine(_appDir, "bin\\");  //合并目录            _configDir = Path.Combine(_appDir, "Config\\");            _dataDir = Path.Combine(_appDir, "App_Data\\");        }        #region 公共目录        /// 
                 /// 应用程序所在的目录        /// 
        public static string AppDir        {            get { return _appDir; }        }        /// 
                 /// Bin文件所在的目录        /// 
        public static string BinDir        {            get { return _binDir; }        }        /// 
                 /// 根目录中的Cinfig文件夹        /// 
        public static string ConfigDir        {            get { return _configDir; }        }        /// 
                 /// 根目录中的App_Data文件夹        /// 
        public static string DataDir        {            get { return _dataDir; }        }        #endregion    }}配置文件：
         
             
              
           
            
            
            
            
            
            
            
            
            
            
            
            
            
             
            
              
              
           
            
            
            
            
            
            
            
            
            
            
            
            
            
            
             
            
              
              
           
            
            
            
            
            
            
            
            
            
            
            
            
            
             
            
              
              
           
            
            
            
            
            
            
            
            
            
            
            
            
            
             
            
              
              
           
            
            
              
           
            
            
              
           
            
            
              
           
            
            
              
           
            
            
            
            
            
            
          
         LogHelper.Log("测试Error！", LogCategory.Error);