log4net


参照博客http://blog.youkuaiyun.com/zhoufoxcn/article/details/2220533

配置文件名App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
  </configSections>
  <log4net>
    <!--
    <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="RollingFileAppender_log.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="100KB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] (%file:%line) %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    -->
    <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
      <!--每条日志末尾的文字说明-->
      <footer value="by 周公" />
      <!--定义文件存放位置-->
      <file value="LogFileAppender_log.txt" />
      <appendToFile value="true" />
      <datePattern value="yyyyMMdd-HH:mm:ss" />
      <layout type="log4net.Layout.PatternLayout">
        <!--每条日志末尾的文字说明-->
        <header value="[Header]&#13;&#10;" />
        <footer value="[Footer]&#13;&#10;" />
        <!--输出格式-->
        <!--样例:2010-11-17 15:50:23,443 [9] (D:/CSProjects/Log4NetDemo/Log4NetDemo/Program.cs:27) FATAL Log4NetDemo.Program [(null)] - fatal  
System.Exception: 在发生了一个致命错误,Exception Id:548828745-->
        <conversionPattern value="记录时间:%date 线程ID:[%thread] 日志级别:文件:所在行%-5level 出错类:%logger property:[%property{NDC}] - 错误描述:%message%newline" />
      </layout>
    </appender>

    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] (%file:%line) %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>

    <!--使用Rolling方式记录日志  
    每个日志文件最大100KB,生成的日志文件名会是log.txt.1,log.txt.2 ...log.txt.10  
    如果记录的日志超过10个,会从log.txt.1开始覆盖  
    -->
    <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="RollingFileAppender_log.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="100KB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] (%file:%line) %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <!--使用Rolling方式记录日志  
    按照日来记录日志  
    -->
    <appender name="RollingLogFileAppender_DateFormat" type="log4net.Appender.RollingFileAppender">
      <file value="RollingLogFileAppender_DateFormat_log.txt" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <!--<datePattern value="yyyyMMdd-HHmm" />-->
      <datePattern value="yyyyMMdd&quot;.log&quot;" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread](%file:%line) %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <!--记录到SQLite这样的单机数据库中去  
    创SQLite表的SQL语句:  
    CREATE TABLE Log (  
    LogId        INTEGER PRIMARY KEY,  
    Date        DATETIME NOT NULL,  
    Level        VARCHAR(50) NOT NULL,  
    Logger        VARCHAR(255) NOT NULL,  
    Source        VARCHAR(255) NOT NULL,  
    Message        TEXT DEFAULT NULL  
    );  
    -->
    <appender name="AdoNetAppender_SQLite" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="System.Data.SQLite.SQLiteConnection, System.Data.SQLite, Version=1.0.66.0, Culture=neutral" />
      <!--SQLite连接字符串-->
      <connectionString value="Data Source=c://log4net.db;Version=3;" />
      <commandText value="INSERT INTO Log (Date, Level, Logger,Source, Message) VALUES (@Date, @Level, @Logger, @Source, @Message)" />
      <parameter>
        <parameterName value="@Date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@Level" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Logger" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Source" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%file:%line" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@Message" />
        <dbType value="String" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    <!--定义输出到SQL Server数据库中-->
    <!--  
    在SQL Server中创建表的SQL语句  
    CREATE TABLE [dbo].[Log] (  
    [Id] [int] IDENTITY (1, 1) NOT NULL,  
    [Date] [datetime] NOT NULL,  
    [Thread] [varchar] (255) NOT NULL,  
    [Level] [varchar] (50) NOT NULL,  
    [Logger] [varchar] (255) NOT NULL,  
    [Message] [varchar] (4000) NOT NULL,  
    [Exception] [varchar] (2000) NULL  
);  
    -->
    <appender name="AdoNetAppender_SQLServer" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="System.Data.SqlClient.SqlConnection, System.Data" />
      <connectionString value="data source=[database server];initial catalog=[database name];integrated security=false;persist security info=True;User ID=[user];Password=[password]" />
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
      <parameter>
        <parameterName value="@log_date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@log_level" />
        <dbType value="String" />
        <size value="50" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="4000" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@exception" />
        <dbType value="String" />
        <size value="2000" />
        <layout type="log4net.Layout.ExceptionLayout" />
      </parameter>
    </appender>
    <!--定义输出到Oracle9i中-->
    <!--  
    在Oracle9i中创建表的SQL语句  
    create table log (  
   Datetime timestamp(3),  
   Thread varchar2(255),  
   Log_Level varchar2(255),  
   Logger varchar2(255),  
   Message varchar2(4000)  
   );  
    -->
    <appender name="AdoNetAppender_Oracle" type="log4net.Appender.AdoNetAppender">
      <connectionType value="System.Data.OracleClient.OracleConnection, System.Data.OracleClient" />
      <connectionString value="data source=[mydatabase];User ID=[user];Password=[password]" />
      <commandText value="INSERT INTO Log (Datetime,Thread,Log_Level,Logger,Message) VALUES (:log_date, :thread, :log_level, :logger, :message)" />
      <bufferSize value="128" />
      <parameter>
        <parameterName value=":log_date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value=":thread" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value=":log_level" />
        <dbType value="String" />
        <size value="50" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value=":logger" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value=":message" />
        <dbType value="String" />
        <size value="4000" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>
    <!--定义输出到IBM DB2中-->
    <!--  
    在DB2中创建表的SQL语句  
    CREATE TABLE "myschema.LOG" (  
    "ID" INTEGER NOT NULL GENERATED ALWAYS AS IDENTITY (  
        START WITH +1  
        INCREMENT BY +1  
        MINVALUE +1  
        MAXVALUE +2147483647  
        NO CYCLE  
        NO CACHE  
        NO ORDER  
    ),  
    "DATE" TIMESTAMP NOT NULL,  
    "THREAD" VARCHAR(255) NOT NULL,  
    "LEVEL" VARCHAR(500) NOT NULL,  
    "LOGGER" VARCHAR(255) NOT NULL,  
    "MESSAGE" VARCHAR(4000) NOT NULL,  
    "EXCEPTION" VARCHAR(2000)  
)  
IN "LRGTABLES";  
    -->
    <appender name="AdoNetAppender_DB2" type="log4net.Appender.AdoNetAppender">
      <bufferSize value="100" />
      <connectionType value="IBM.Data.DB2.DB2Connection,IBM.Data.DB2" />
      <connectionString value="server=192.168.0.0;database=dbuser;user Id=username;password=password;persist security info=true" />
      <commandText value="INSERT INTO myschema.Log (Date,Thread,Level,Logger,Message,Exception) VALUES (@log_date,@thread,@log_level,@logger,@message,@exception)" />
      <parameter>
        <parameterName value="@log_date" />
        <dbType value="DateTime" />
        <layout type="log4net.Layout.RawTimeStampLayout" />
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@log_level" />
        <dbType value="String" />
        <size value="500" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="255" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="4000" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@exception" />
        <dbType value="String" />
        <size value="2000" />
        <layout type="log4net.Layout.ExceptionLayout" />
      </parameter>
    </appender>
    <!--定义输出到windows事件中-->
    <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
    <!--定义输出到数据库中,这里举例输出到Access数据库中,数据库为C盘的log4net.mdb  
    创建Access表的SQL语句:  
    -->
    <appender name="AdoNetAppender_Access" type="log4net.Appender.AdoNetAppender">
      <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:/log4net.mdb" />
      <commandText value="INSERT INTO LogDetails ([LogDate],[Thread],[Level],[Logger],[Message]) VALUES (@logDate, @thread, @logLevel, @logger,@message)" />
      <!--定义各个参数-->
      <parameter>
        <parameterName value="@logDate" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@thread" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%thread" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logLevel" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%level" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@logger" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%logger" />
        </layout>
      </parameter>
      <parameter>
        <parameterName value="@message" />
        <dbType value="String" />
        <size value="240" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%message" />
        </layout>
      </parameter>
    </appender>

    <root>
      <!--文件形式记录日志-->
      <appender-ref ref="LogFileAppender" />
      <!--控制台控制显示日志-->
      <appender-ref ref="ConsoleAppender" />
      <!--Windows事件日志-->
      <!--<appender-ref ref="EventLogAppender" />-->
      <!--SQLite日志-->
      <!--<appender-ref ref="AdoNetAppender_SQLite" />-->
      <!--RollingFileAppender事件日志-->
      <appender-ref ref="RollingFileAppender" />
      <!--RollingFileAppender事件日志,每天一个日志-->
      <appender-ref ref="RollingLogFileAppender_DateFormat" />
      <!-- 如果不启用相应的日志记录,可以通过这种方式注释掉  
  <appender-ref ref="AdoNetAppender_Access" />  
  -->
    </root>
  </log4net>
</configuration>


Form代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using log4net;

[assembly: log4net.Config.XmlConfigurator(Watch = true)]
namespace Chareree.WinfrmLog4net
{
 
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        //如果是web项目,需要在global.asax的Application_Start方法中配置web.config的引用,log4net.Config.XmlConfigurator.Configure();  
        private void Button_Open_Click(object sender, EventArgs e)
        {
            ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

            //记录错误日志  
            log.Error("error", new Exception("在这里发生了一个异常,Error Number:"));
            //记录严重错误  
            log.Fatal("fatal", new Exception("在发生了一个致命错误,Exception Id"));
            //记录一般信息  
            log.Info("提示:系统正在运行");
            //记录调试信息  
            log.Debug("调试信息:debug");
            //记录警告信息  
            log.Warn("警告:warn");  
          
        }
    }
}

---

/// <summary>
        /// 下载并保存指定Url的文件,返回文件长度
        /// </summary>
        /// <param name="FileURL"></param>
        /// <param name="FileSavePath"></param>
        /// <returns></returns>
        public long DownloadFile(string FileURL, string FileSavePath)
        {
            long contentLength = 0L;
            HttpWebRequest request = WebRequest.Create(FileURL) as HttpWebRequest;
            request.CookieContainer = this.cookie;
            request.AllowAutoRedirect = true;
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            Stream responseStream = response.GetResponseStream();
            try
            {
                contentLength = response.ContentLength;
                byte[] buffer = new byte[0x200];
                int count = 0;
                count = responseStream.Read(buffer, 0, 0x200);
                FileStream stream2 = System.IO.File.Create(FileSavePath);
                try
                {
                    while (count > 0)
                    {
                        stream2.Write(buffer, 0, count);
                        count = responseStream.Read(buffer, 0, 0x200);
                    }
                    return contentLength;
                }
                finally
                {
                    stream2.Close();
                }
            }
            catch (Exception ex)
            {
                RwLog.Log("下载文件失败-"+ex.Message);
            }
            finally
            {
                response.Close();
                responseStream.Close();
            }
            return contentLength;
        }



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