log4net 使用记录

    1、下载地址

http://logging.apache.org/log4net/download.html

 

2、log4net的配置文件。

  CS程序，在根目录的Program.cs中的Main方法中添加： 

log4net.Config.XmlConfigurator.Configure();

 

       BS程序，在根目录的Global.asax.cs（没有新建一个）中的Application_Start方法中添加：

 

protected void Application_Start(object sender, EventArgs e)
        {
            log4net.Config.XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo(Server.MapPath("~") + @"\log4net.xml"));
        }

 

 

 

  3、修改配置文件修 

    如果是CS程序，则在默认的App.config文件（没有新建一个）中添加内容；如果是BS程序，则添加到Web.config文件中，添加内容一样，这里不再列出。

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <configSections>

<section name="log4net"   type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />

  </configSections>
<log4net>
    <root>
        <level value="ALL"/>
    </root>
    <!-- 系统日志，或者基本日志 -->
    <appender name="SysLogFileAppender" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//System//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd".txt""/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
    </appender>
    
   
    <logger name="cmcTools.Web">
        <level value="ALL"/>
        <appender-ref ref="SysLogFileAppender"/>
    </logger>

</log4net>
</configuration>

 

    当然，也可以直接写到单个XML文件中，然后如第二步一样，加载该文件，XML文件格式如下：

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
    <root>
        <level value="ALL"/>
    </root>
    <!-- 系统日志，或者基本日志 -->
    <appender name="SysLogFileAppender" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//System//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
    </appender>
      
    
    <logger name="cmcTools.Web">
        <level value="ALL"/>
        <appender-ref ref="SysLogFileAppender"/>
    </logger>

</log4net>

 4、代码中使用

    var sysLog4net = LogManager.GetLogger("cmcTools.Web"); //创建日志

    sysLog4net.Info(message);

 

 

在实际项目中，日志可能是按模块来划分记录的，同时每个模块下可能又分信息日志和错误日志，配置文件如下：

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
    <root>
        <level value="ALL"/>
    </root>
    <!-- 系统日志，或者基本日志 -->
    <appender name="SysLogFileAppender" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//System//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
    </appender>
    
    <!-- C7操作日志 -->
    <appender name="C7LogFileAppenderInfo" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//C7//Info//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="DEBUG" />
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>
    <!-- C7错误日志 -->
    <appender name="C7LogFileAppenderError" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//C7//Error//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="WARN" />
            <param name="LevelMax" value="FATAL" />
        </filter>
    </appender>


    <!-- CheckCIIS操作日志 -->
    <appender name="CheckCIISLogFileAppenderInfo" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//CheckCIIS//Info//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="DEBUG" />
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>
    
    <!-- CheckCIIS错误日志 -->
    <appender name="CheckCIISLogFileAppenderError" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//CheckCIIS//Error//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="WARN" />
            <param name="LevelMax" value="FATAL" />
        </filter>
    </appender>


    <!-- SL操作日志 -->
    <appender name="SLLogFileAppenderInfo" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//SL//Info//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="DEBUG" />
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>

    <!-- SL错误日志 -->
    <appender name="SLLogFileAppenderError" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//SL//Error//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="WARN" />
            <param name="LevelMax" value="FATAL" />
        </filter>
    </appender>

    <!-- C6操作日志 -->
    <appender name="C6LogFileAppenderInfo" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//C6//Info//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="DEBUG" />
            <param name="LevelMax" value="INFO" />
        </filter>
    </appender>

    <!-- C6错误日志 -->
    <appender name="C6LogFileAppenderError" type="log4net.Appender.RollingFileAppender">
        <param name="File" value="LogEvent//C6//Error//Log_"/>
        <param name="AppendToFile" value="true"/>
        <datePattern value="yyyy-MM-dd&quot;.txt&quot;"/>
        <param name="RollingStyle" value="Date"/>
        <param name="StaticLogFileName" value="false"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{yyyy-MM-dd HH:mm:ss} - 日志级别：%-5level   %message %newline %newline"/>
        </layout>
        <filter type="log4net.Filter.LevelRangeFilter">
            <param name="LevelMin" value="WARN" />
            <param name="LevelMax" value="FATAL" />
        </filter>
    </appender>
    
    <logger name="cmcTools.Web">
        <level value="ALL"/>
        <appender-ref ref="SysLogFileAppender"/>
    </logger>

    <logger name="cmcTools.Web.C7">
        <level value="ALL"/>
        <appender-ref ref="C7LogFileAppenderInfo"/>
        <appender-ref ref="C7LogFileAppenderError"/>
    </logger>
    
    <logger name="cmcTools.Web.SL">
        <level value="ALL"/>
        <appender-ref ref="SLLogFileAppenderInfo"/>
        <appender-ref ref="SLLogFileAppenderError"/>
    </logger>


    <logger name="cmcTools.Web.CheckCIIS">
        <level value="ALL"/>
        <appender-ref ref="CheckCIISLogFileAppenderInfo"/>
        <appender-ref ref="CheckCIISLogFileAppenderError"/>
    </logger>


    <logger name="cmcTools.Web.C6">
        <level value="ALL"/>
        <appender-ref ref="C6LogFileAppenderInfo"/>
        <appender-ref ref="C6LogFileAppenderError"/>
    </logger>
</log4net>

注意第三行：  <root><level value="ALL"/> </root>，不能在加其它类型，否则会输出所有模块的日志

在代码中：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using log4net;
using cmcTools.CommonLibrary.Logn4et;

namespace cmcTools.CommonLibrary
{

    /// <summary>
    /// 用于记录员工的变更信息状态
    /// </summary>
    public class Log4netHelper
    {
        private static log4net.ILog sysLog4net;//用于记录相关操作的日志
        private static log4net.ILog c7Log4net;
        private static log4net.ILog slLog4net;
        private static log4net.ILog iisLog4net;
        private static log4net.ILog c6Log4net;

        static Log4netHelper()
        {
            sysLog4net = LogManager.GetLogger("cmcTools.Web"); //创建日志
            c7Log4net = LogManager.GetLogger("cmcTools.Web.C7");
            slLog4net = LogManager.GetLogger("cmcTools.Web.SL");
            iisLog4net = LogManager.GetLogger("cmcTools.Web.CheckCIIS");
            c6Log4net = LogManager.GetLogger("cmcTools.Web.C6");

        }

        public static void Info(string _info)
        {
            log4netInfo(LogerTypeEnum.Base, _info);
        }


        public static void Info(LogerTypeEnum logerType, string _info)
        {
            log4netInfo(logerType, _info);
        }

        /// <summary>
        /// 记录关联或解除员工的操作日志的信息
        /// </summary>
        public static void Error(Exception ex)
        {
            Error(LogerTypeEnum.Base, ex);
        }

        /// <summary>
        /// 记录关联或解除员工的操作日志的信息
        /// </summary>
        public static void Error(LogerTypeEnum logerType, Exception ex)
        {
            Error(logerType, ex, "发生异常");
        }

        /// <summary>
        /// 记录关联或解除员工的操作日志的信息
        /// </summary>
        public static void Error(LogerTypeEnum logerType, string message)
        {
            Error(logerType, message, "发生异常");
        }

        /// <summary>
        /// 记录关联或解除员工的操作日志的信息
        /// </summary>
        public static void Error(LogerTypeEnum logerType, Exception ex, string errorName)
        {
            string message = string.Format("出错类型：{0}\t {1}: {2}    {3}", logerType.ToString(), errorName, ex.StackTrace, ex.Message);
            log4netError(logerType, message);
        }

        /// <summary>
        /// 记录关联或解除员工的操作日志的信息
        /// </summary>
        public static void Error(LogerTypeEnum logerType, string messageInfo, string errorName)
        {
            string message = string.Format("出错类型：{0}\t {1}: {2}  ", logerType.ToString(), errorName, messageInfo);
            log4netInfo(logerType, message);
        }

    


        static void log4netInfo(LogerTypeEnum logerType, string message)
        {
            switch (logerType)
            {
                case LogerTypeEnum.Base:
                    sysLog4net.Info(message);
                    break;
                case LogerTypeEnum.C7:
                    c7Log4net.Info(message);
                    break;
                case LogerTypeEnum.C6_L:
                    c6Log4net.Info(message);
                    break;
                case LogerTypeEnum.ForCIIS:
                    iisLog4net.Info(message);
                    break;
                case LogerTypeEnum.SL:
                    slLog4net.Info(message);
                    break;

            }
        }
        static void log4netError(LogerTypeEnum logerType, string message)
        {
            switch (logerType)
            {
                case LogerTypeEnum.Base:
                    sysLog4net.Error(message);
                    break;
                case LogerTypeEnum.C7:
                    c7Log4net.Error(message);
                    break;
                case LogerTypeEnum.C6_L:
                    c6Log4net.Error(message);
                    break;
                case LogerTypeEnum.ForCIIS:
                    iisLog4net.Error(message);
                    break;
                case LogerTypeEnum.SL:
                    slLog4net.Error(message);
                    break;

            }
        }
    }
}

这样日志就实际调用时：

        /// <summary>
        /// 文本文件下载 
        /// </summary>
        /// <param name="filepath"></param>
        /// <param name="logerEnum"></param>
        /// <param name="callProcess"></param>
        public static void DownFile(string filepath, LogerTypeEnum logerEnum, Action<string> actProcessComplete, Func<bool> actProcessBefore)
        {
            if (actProcessBefore != null)
            {
              var result =   actProcessBefore();
              if (!result)
              {
                  //HttpContext.Current.Response.End();
                  return;
              }
            }
            string extName = IoHelper.GetExtension(filepath).Remove(0, 1);//去除.
            string errorInfo = string.Empty;
            try
            {
                if (File.Exists(filepath))
                {
                    string fileName = System.IO.Path.GetFileName(filepath);
                    System.IO.FileStream fs = new System.IO.FileStream(filepath, System.IO.FileMode.Open, System.IO.FileAccess.Read, FileShare.ReadWrite);
                    if (fs.Length > 0)
                    {
                        byte[] bytes = new byte[(int)fs.Length];
                        fs.Read(bytes, 0, bytes.Length);
                        fs.Close();
                        HttpContext.Current.Response.ContentType = "application/octet-stream";
                        HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
                        HttpContext.Current.Response.BinaryWrite(bytes);
                        HttpContext.Current.Response.Flush();
                        //HttpContext.Current.ApplicationInstance.CompleteRequest();
                    }
                    else
                    {
                        errorInfo = "文件没有数据，请重试";
                    }
                }
                else
                {
                    errorInfo = "数据文件（" + extName + "）不存在，不能下载";
                }


            }
            catch (Exception ex)
            {
                Log4netHelper.Error(logerEnum, ex, "导出" + extName + "文件异常 ");
            }
            finally
            {
                if (!string.IsNullOrEmpty(errorInfo) && actProcessComplete != null)
                {
                    actProcessComplete(errorInfo);
                }
                else
                {
                    HttpContext.Current.Response.End();
                }
            }
        }