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.net 日志系統(tǒng)解析

 更新時(shí)間：2017年01月19日 11:00:03   作者：坦蕩  
本篇分享的目的是能幫助需要的人快速搭建自己的LogSystem，具有一定的參考價(jià)值，下面跟著小編一起來(lái)看下吧

一.   寫在前面

日志系統(tǒng)對(duì)于任何項(xiàng)目都是必不可少的，無(wú)論對(duì)于測(cè)試階段的debug,性能測(cè)試，執(zhí)行時(shí)間，操作記錄還是線上的問(wèn)題排查，訪問(wèn)記錄等，日志系統(tǒng)都扮演著重要的角色。本篇分享的目的是能幫助需要的人快速搭建自己的LogSystem.，僅供參考。 先上個(gè)圖唄，自認(rèn)為頁(yè)面還算清爽吧：

我的LogSystem使用Log4net入庫(kù)的方式，網(wǎng)上特別多的分享，但是能完整運(yùn)行下來(lái)的真是很少，所以現(xiàn)在需要和以后用得上的小伙伴抓緊收藏咯。

二.  Log4Net自定義內(nèi)容入庫(kù)

Log4Net存日志的方式，給人的感覺(jué)實(shí)在是不實(shí)用，IT行業(yè)不都求一個(gè)自動(dòng)化嗎？廢話不說(shuō)了，先上Log4net入庫(kù)系統(tǒng)的代碼。

LogSystem數(shù)據(jù)庫(kù)結(jié)構(gòu)，我的建議是一個(gè)項(xiàng)目一個(gè)表。

在Log組件中，你需要這樣幾個(gè)類。下面分別給出代碼：

LogContent.cs，這里定義了Log實(shí)體，在實(shí)體化實(shí)體的時(shí)候，通過(guò)給構(gòu)造函數(shù)傳參創(chuàng)建好這個(gè)對(duì)象。注釋很詳細(xì)了

using System;
namespace LogComponent
{
 public class LogContent
 {
 public LogContent(string logLevel, string logMsg, string logModule, string description, string userName)
 {
  LogLevel = logLevel;
  UserName = userName;
  Description = description;
  LogMsg = logMsg;
  LogModule = logModule;
 }
 /// <summary>
 /// 日志級(jí)別
 /// </summary>
 public string LogLevel { get; set; }
 /// <summary>
 /// 日志消息
 /// </summary>
 public string LogMsg { get; set; }
 /// <summary>
 /// 系統(tǒng)登陸用戶
 /// </summary>
 public string UserName { get; set; }
 /// <summary>
 /// 日志描述信息
 /// </summary>
 public string Description { get; set; }
 /// <summary>
 /// 記錄時(shí)間
 /// </summary>
 public DateTime LogDate { get; set; }
 /// <summary>
 /// 模塊名稱
 /// </summary>
 public string LogModule { get; set; }
 }
}

LogHelper.cs,定義了日志級(jí)別，和寫入方法

[assembly: log4net.Config.XmlConfigurator(Watch = true,ConfigFile = "log4net.config")]
namespace LogComponent
{
 public class LogHelper
 {
 static log4net.ILog log = log4net.LogManager.GetLogger("myLogger");
 /// <summary>
 /// 異常日志
 /// </summary>
 /// <param name="logMsg">日志信息</param>
 /// <param name="logModule">代碼模塊</param>
 /// <param name="description">其他描述</param>
 /// <param name="userName">用戶名</param>
 public static void LogError(string logMsg, string logModule, string description = "", string userName = "")
 {
  log.Error(new LogContent("Error", SubLogString(logMsg), logModule, SubLogString(description), userName));
 }
 public static void LogInfo(string logMsg, string logModule, string description = "", string userName = "")
 {
  log.Info(new LogContent("Info", SubLogString(logMsg), logModule, SubLogString(description), userName));
 }
 public static void LogWarn(string logMsg, string logModule, string description = "", string userName = "")
 {
  log.Warn(new LogContent("Warn", SubLogString(logMsg), logModule, SubLogString(description), userName));
 }
 public static void LogDebug(string logMsg, string logModule, string description = "", string userName = "")
 {
  log.Debug(new LogContent("Debug", SubLogString(logMsg), logModule, SubLogString(description), userName));
 }
 private static string SubLogString(string str)
 {
  if (str.Length > 1500)
  {
  return str.Substring(0, 1500);
  }
  return str;
 }
 }
}

MessagePartternConverter.cs

using log4net.Core;
using log4net.Layout.Pattern;
using System.IO;
using System.Reflection;
namespace LogComponent
{
 class MessagePatternConverter : PatternLayoutConverter
 {
 protected override void Convert(TextWriter writer, LoggingEvent loggingEvent)
 {
  if (Option != null)
  {
  // Write the value for the specified key
  WriteObject(writer, loggingEvent.Repository, LookupProperty(Option, loggingEvent));
  }
  else
  {
  // Write all the key value pairs
  WriteDictionary(writer, loggingEvent.Repository, loggingEvent.GetProperties());
  }
 }
 /// <summary>
 /// 通過(guò)反射獲取傳入的日志對(duì)象的某個(gè)屬性的值
 /// </summary>
 /// <param name="property"></param>
 /// <returns></returns>
 private object LookupProperty(string property, log4net.Core.LoggingEvent loggingEvent)
 {
  object propertyValue = string.Empty;
  PropertyInfo propertyInfo = loggingEvent.MessageObject.GetType().GetProperty(property);
  if (propertyInfo != null)
  propertyValue = propertyInfo.GetValue(loggingEvent.MessageObject, null);
  return propertyValue;
 }
 }
}

MyLayout.cs

using log4net.Layout;
namespace LogComponent
{
 class MyLayout : PatternLayout
 {
 public MyLayout()
 {
  this.AddConverter("property", typeof(MessagePatternConverter));
 }
 }
}

其實(shí)看到這里，最重要的并不是代碼了，核心部分Log4net都幫我們寫好了，關(guān)鍵在于你的配置，下面是log4net.config的內(nèi)容。拿到你的web項(xiàng)目里是一樣用的。但是不要忘了在你的項(xiàng)目中引用nuget：log4net喲。

log4net.config如下：在其中主要配置了log入庫(kù)的參數(shù)和sql語(yǔ)句，當(dāng)然還有sql連接。注釋已經(jīng)很詳細(xì)了

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
 <configSections>
 <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
 </configSections>
 <log4net>
 <root >
 <level value="Debug"/>
 <appender-ref ref="ADONetAppender"/>
 </root>
 <logger name="myLogger">
 <level value="Debug"/>
 <appender-ref ref="ADONetAppender"/>
 </logger>
 <appender name="ADONetAppender" type="log4net.Appender.ADONetAppender,log4net">
 <!--BufferSize為緩沖區(qū)大小，只有日志記錄超value條才會(huì)一塊寫入到數(shù)據(jù)庫(kù)-->
 <bufferSize value="1"/>
 <!--或?qū)憺?lt;param name="BufferSize" value="1" />-->
 <!--引用-->
 <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
 <!--連接數(shù)據(jù)庫(kù)字符串-->
 <connectionString value="Data Source=115.29.54.31;Initial Catalog=LogSystem;uid=sa;pwd=sa.;MultipleActiveResultSets=True"/>
 <!--插入到表Log-->
 <commandText value="INSERT INTO HdPubLog ([LogDate],[LogMsg],[UserName],[Description],[LogLevel],[LogModule]) VALUES (@log_date,@LogMsg,@UserName,@Description,@LogLevel,@LogModule)"/>
 <parameter>
 <parameterName value="@log_date"/>
 <dbType value="DateTime"/>
 <layout type="log4net.Layout.RawTimeStampLayout"/>
 <!--獲取log4net中提供的日志時(shí)間RawTimeStampLayout為默認(rèn)的時(shí)間輸出格式-->
 </parameter>
 <parameter>
 <parameterName value="@LogMsg"/>
 <dbType value="String"/>
 <size value="1510"/>
 <layout type="LogComponent.MyLayout, LogComponent">
  <param name="ConversionPattern" value="%property{LogMsg}"/>
 </layout>
 </parameter>
 <parameter>
 <parameterName value="@UserName"/>
 <dbType value="String"/>
 <size value="50"/>
 <layout type="LogComponent.MyLayout, LogComponent">
  <param name="ConversionPattern" value="%property{UserName}"/>
 </layout>
 </parameter>
 <parameter>
 <parameterName value="@Description"/>
 <dbType value="String"/>
 <size value="1510"/>
 <layout type="LogComponent.MyLayout, LogComponent">
  <param name="ConversionPattern" value="%property{Description}"/>
 </layout>
 </parameter>
 <parameter>
 <parameterName value="@LogLevel"/>
 <dbType value="String"/>
 <size value="50"/>
 <layout type="LogComponent.MyLayout, LogComponent">
  <param name="ConversionPattern" value="%property{LogLevel}"/>
 </layout>
 </parameter>
 <parameter>
 <parameterName value="@LogModule"/>
 <dbType value="String"/>
 <size value="50"/>
 <layout type="LogComponent.MyLayout, LogComponent">
  <param name="ConversionPattern" value="%property{LogModule}"/>
 </layout>
 </parameter>
 </appender>
 </log4net>
</configuration>

這樣一來(lái)，你的配置就完成了，你可以直接測(cè)試插入的情況：

三.   把Log信息可視化

 我的UI使用的是Datatables.js，彈出框是layer,日期組件好像是layDate，下拉框是修改樣式后的select2。UI代碼是我自己的一個(gè)框架里的，內(nèi)容太多就不貼出來(lái)了，你只需要和以前一樣，把數(shù)據(jù)從庫(kù)里查出來(lái)，綁定給任意你喜歡的數(shù)據(jù)表格上。由于單頁(yè)面的日志系統(tǒng)沒(méi)有什么復(fù)雜操作，就用個(gè)sqlHelper查一下就算了，代碼和條件拼接如下

 public class xxxDal
 {
 private SqlHelper _sqlHelper = new SqlHelper();
 /// <summary>
 /// 獲取xxx的日志
 /// </summary>
 /// <param name="model"></param>
 /// <returns></returns>
 public List<LogModel> GetxxxLog(SM_LogModel model)
 {
  StringBuilder sql = new StringBuilder();
  List<SqlParameter> sqlParameters = new List<SqlParameter>();
  StringBuilder sqlWhere = new StringBuilder();
  if (!string.IsNullOrWhiteSpace(model.LogStartTime))
  {
  sqlParameters.Add(new SqlParameter("@LogStartTime", model.LogStartTime));
  sqlWhere.Append(@" AND h.LogDate > @LogStartTime");
  }
  if (!string.IsNullOrWhiteSpace(model.LogEndTime))
  {
  sqlParameters.Add(new SqlParameter("@LogEndTime", model.LogEndTime));
  sqlWhere.Append(@" AND h.LogDate < @LogEndTime");
  }
  if (!string.IsNullOrWhiteSpace(model.LogLevel))
  {
  sqlParameters.Add(new SqlParameter("@LogLevel", model.LogLevel));
  sqlWhere.Append(@" AND h.LogLevel = @LogLevel");
  }
  if (!string.IsNullOrWhiteSpace(model.LogModule))
  {
  sqlParameters.Add(new SqlParameter("@LogModule", model.LogModule));
  sqlWhere.Append(@" AND h.LogModule = @LogModule");
  }
  sql.AppendFormat(@"
   WITH t AS ( SELECT ROW_NUMBER() OVER ( ORDER BY id DESC ) AS IndexNum ,
   [Id] ,
   CONVERT(VARCHAR, [LogDate], 21) AS [LogDate] ,
   [UserName] ,
   SUBSTRING([Description], 0, 150) AS [Description] ,
   SUBSTRING([LogMsg], 0, 200) AS [LogMsg] ,
   [LogLevel] ,
   [LogModule]
  FROM [LogSystem].[dbo].[xxxLog] h
  WHERE 1 = 1
   {0}
  )
 SELECT *
 FROM t
 WHERE IndexNum > @startIndex
  AND indexnum < @endIndex", sqlWhere);
  sqlParameters.Add(new SqlParameter("@startIndex", model.Start));
  sqlParameters.Add(new SqlParameter("@endIndex", model.Start + model.Length));
  DataTable dt = _sqlHelper.ExecuteDataTable(sql.ToString(), sqlParameters.ToArray());
  return DataTableTools<LogModel>.DataTableToList(dt);
 }
 public int GetxxxLogTotalCount(SM_LogModel model)
 {
  StringBuilder sql = new StringBuilder(); List<SqlParameter> sqlParameters = new List<SqlParameter>();
  sql.Append(@"
   SELECT COUNT(*)
   FROM [HdPubLog] h where 1=1 ");
  if (!string.IsNullOrWhiteSpace(model.LogStartTime))
  {
  sqlParameters.Add(new SqlParameter("@LogStartTime", model.LogStartTime));
  sql.Append(@" AND h.LogDate > @LogStartTime");
  }
  if (!string.IsNullOrWhiteSpace(model.LogEndTime))
  {
  sqlParameters.Add(new SqlParameter("@LogEndTime", model.LogEndTime));
  sql.Append(@" AND h.LogDate < @LogEndTime");
  }
  if (!string.IsNullOrWhiteSpace(model.LogLevel))
  {
  sqlParameters.Add(new SqlParameter("@LogLevel", model.LogLevel));
  sql.Append(@" AND h.LogLevel = @LogLevel");
  }
  if (!string.IsNullOrWhiteSpace(model.LogModule))
  {
  sqlParameters.Add(new SqlParameter("@LogModule", model.LogModule));
  sql.Append(@" AND h.LogModule = @LogModule");
  }
  return _sqlHelper.ExecuteScalar<int>(sql.ToString(), sqlParameters.ToArray());
 }
 [HttpPost]
 public LogModel GetxxxxSignelLog(int id)
 {
  string sql = @"
   SELECT [Id] ,
    CONVERT(VARCHAR(30), [LogDate], 21) AS [LogDate] ,
    [UserName] ,
    [Description] ,
    [LogMsg] ,
    [LogLevel] ,
    [LogModule] ,
    [Id] IndexNum 
   FROM [LogSystem].[dbo].[xxxxLog] h
   WHERE h.id = @Id";
  var row = _sqlHelper.ExecuteDataRow(sql, new SqlParameter("@Id", id));
  return DataTableTools<LogModel>.DataRowToModel(row);
 }
 }

以上就是本文的全部?jī)?nèi)容，希望本文的內(nèi)容對(duì)大家的學(xué)習(xí)或者工作能帶來(lái)一定的幫助，同時(shí)也希望多多支持腳本之家！

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