using Microsoft.Practices.EnterpriseLibrary.Common.Configuration;

using Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder;

using Microsoft.Practices.EnterpriseLibrary.Logging;

using Microsoft.Practices.EnterpriseLibrary.Logging.Filters;

using Microsoft.Practices.EnterpriseLibrary.Logging.Instrumentation;

using System.Collections.Generic;

using System.Configuration;

using System.Diagnostics;

namespace Core

{

    public class MicroLogger

    {

        // Fields

        private const int DefaultEventId = ;

        private const int DefaultPriority = -;

        private const TraceEventType DefaultSeverity = TraceEventType.Information;

        private const string DefaultTitle = "";

        private static readonly ICollection<string> emptyCategoriesList = new List<string>();

        private static LogWriterFactory factory = new LogWriterFactory(ConfigurationSourceFactory.Create());

        private static object sync = new object();

        private static volatile LogWriter writer;

        //第三步

        public static void Write(LogEntry log)

        {

            Writer.Write(log);

        }

        //第一步

        public static void Write(object message)

        {

            Write(message, emptyCategoriesList, -, , TraceEventType.Information, "", null);

        }

        #region

        public static void Write(object message, ICollection<string> categories)

        {

            Write(message, categories, -, , TraceEventType.Information, "", null);

        }  

        //第二步

        public static void Write(object message, ICollection<string> categories, int priority, int eventId, TraceEventType severity, string title, IDictionary<string, object> properties)

        {

            LogEntry log = new LogEntry

            {

                Message = message.ToString(),

                Categories = categories,

                Priority = priority,

                EventId = eventId,

                Severity = severity,

                Title = title,

                ExtendedProperties = properties

            };

            Write(log);

        }

        //第四步

        // Properties

        public static LogWriter Writer

        {

            get

            {

                if (writer == null)

                {

                    lock (sync)

                    {

                        if (writer == null)

                        {

                            try

                            {

                                writer = factory.Create();

                            }

                            catch (ConfigurationErrorsException exception)

                            {

                                TryLogConfigurationFailure(exception);

                                throw;

                            }

                        }

                    }

                }

                return writer;

            }

        }

    }

}

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

<configuration>

  <configSections>

    <section name="loggingConfiguration"

             type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

  </configSections>

  <loggingConfiguration name="Logging Application Block"

                        tracingEnabled="true"

                        defaultCategory="General"

                        logWarningsWhenNoCategoriesMatch="true">

    <listeners>

      <add fileName="log\JobExecute.log"

           footer="----------------------------------------"

           formatter="Text Formatter"

           header="----------------------------------------"

           rollFileExistsBehavior="Increment"

           rollInterval="Day"

           rollSizeKB="0"

           timeStampPattern="yyyy-MM-dd"

           listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           traceOutputOptions="None"

           filter="All"

           type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           name="Rolling Flat File Trace Listener JobExecute" />

      <add fileName="log\error.log"

           footer="----------------------------------------"

           formatter="Text Formatter"

           header="----------------------------------------"

           rollFileExistsBehavior="Increment"

           rollInterval="Day"

           rollSizeKB="0"

           timeStampPattern="yyyy-MM-dd"

           listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           traceOutputOptions="None"

           filter="All"

           type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           name="Rolling Flat File Trace Listener Error" />

      <add fileName="log\returnError.log"

           footer="----------------------------------------"

           formatter="Text Formatter"

           header="----------------------------------------"

           rollFileExistsBehavior="Increment"

           rollInterval="Day"

           rollSizeKB="0"

           timeStampPattern="yyyy-MM-dd"

           listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           traceOutputOptions="None"

           filter="All"

           type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           name="Rolling Flat File Trace Listener ReturnError" />

      <add fileName="log\other.log"

           footer="----------------------------------------"

           formatter="Text Formatter"

           header="----------------------------------------"

           rollFileExistsBehavior="Increment"

           rollInterval="Day"

           rollSizeKB="0"

           timeStampPattern="yyyy-MM-dd"

           listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           traceOutputOptions="None"

           filter="All"

           type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           name="Rolling Flat File Trace Listener Other" />

      <add listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.CustomTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           traceOutputOptions="None"

           filter="All"

           type="YTO.Framework.Logging.Database.DatabaseTraceListener, YTO.Framework.Logging.Database"

           initializeData=""

           formatter="Text Formatter"

           name="SqlServer Trace Listener"/>

    </listeners>

    <formatters>

      <add template="Timestamp: {timestamp(local)}
Message: {message}
Category: {category}
Priority: {priority}
EventId: {eventid}
Severity: {severity}
Title:{title}
Machine: {machine}
Application Domain: {appDomain}
Process Id: {processId}
Process Name: {processName}
Win32 Thread Id: {win32ThreadId}
Thread Name: {threadName}
Extended Properties: {dictionary({key} - {value}
)}"

           type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

           name="Text Formatter" />

    </formatters>

    <categorySources>

      <add switchValue="All"

           name="Exception">

        <listeners>

          <add name="Rolling Flat File Trace Listener Error" />

        </listeners>

      </add>

      <add switchValue="All"

           name="JobExecute">

        <listeners>

          <add name="Rolling Flat File Trace Listener JobExecute" />

        </listeners>

      </add>

      <add switchValue="All"

           name="ReturnError">

        <listeners>

          <add name="Rolling Flat File Trace Listener ReturnError" />

        </listeners>

      </add>

    </categorySources>

    <specialSources>

      <allEvents switchValue="All"

                 name="All Events" />

      <notProcessed switchValue="All"

                    name="Unprocessed Category">

        <listeners>

          <add name="Rolling Flat File Trace Listener Other" />

        </listeners>

      </notProcessed>

      <errors switchValue="All"

              name="Logging Errors &amp; Warnings">

        <listeners>

          <add name="Rolling Flat File Trace Listener Error" />

        </listeners>

      </errors>

    </specialSources>

  </loggingConfiguration>

</configuration>