Log4NET简介

log4net库是Apache log4j框架在Microsoft .NET平台的实现，是一个帮助程序员将日志信息输出到各种目标（控制台、文件、数据库等）的工具。

前提

最近做项目需要记录系统日志和用户操作日志，就想起来了log4net,但是业务需要需要加入自定义属性，并把自定义属性日志数据插入到数据库中，看好趁这个机会学习总结下。

详细步骤

一、首先下载：log4net.dll  下载地址：http://logging.apache.org/log4net/download_log4net.cgi

二、在项目中进行引用。这个不多说了，相信大家都很熟悉这个过程。

三、在web.config，加入以下代码:

1  <configSections>
2     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
3   </configSections>

四、然后在与web.config同目录下面新建个配置文件，我这建了个log4net.config，如下图

五、在log4net.config加入以下代码，里面注释和详细 ，大家可以看如下代码：

  1 <?xml version="1.0" encoding="utf-8"?>
  2 <configuration>
  3   <configSections>
  4     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
  5   </configSections>
  6
  7   <log4net>
  8     <logger name="myLogger">
  9       <level value="INFO"/>
 10       <appender-ref ref="AdoNetAppender_SqlServer"/>
 11       <!--sql server数据库1-->
 12       <appender-ref ref="AdoNetAppender_SqlServer1"/>
 13       <!--sql server数据库2-->
 14       <appender-ref ref="AdoNetAppender_Sqllite"/>
 15       <!--sqlite数据库-->
 16       <appender-ref ref="InfoAppender"/>
 17       <!--记录到文件-->
 18     </logger>
 19
 20     <!--sql server数据库1-->
 21     <appender name="AdoNetAppender_SqlServer" type="log4net.Appender.AdoNetAppender">
 22       <!-- BufferSize 为缓冲区大小，只有日志记录超5 条才会一块写入到数据库 -->
 23       <!-- 或写为<param name="BufferSize" value="10" /> -->
 24       <bufferSize value="0"/>
 25       <!-- 引用 -->
 26       <!--2.0这是对应sql2008 如是2000或2005另外配置-->
 27       <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral,PublicKeyToken=b77a5c561934e089"/>
 28
 29       <!-- 连接数据库字符串 -->
 30       <connectionString value="Data Source=.;Initial Catalog=Log;User ID=sa;Password=sa123;" />
 31       <!-- 插入到表Log -->
 32       <commandText value = "INSERT INTO Mylogger ([EVENTTYPE],[TIMESTAMP],[EVENTCATEGORY],[EVENT_ID],[COMPUTERNAME],[MAC_ADDRESS],[USERNAME],[SOURCETYPE],[SOURCE],[DESCRIPTION],[COLLECTDATE]) VALUES (@Event_Type,@log_date, @EventCategory, @Event_ID, @ComputerName,@Mac_Address,@UserName,@SourceType,@Source,@Description,@CollectDate) "/>
 33
 34       <!-- 日志类型，这里均为3 -->
 35       <parameter>
 36         <parameterName value = "@Event_Type"/>
 37         <dbType value = "Int32"/>
 38         <!--<dbType value = "String"/>
 39         <size value = "50"/>-->
 40         <!-- LogComponent 是类所在的命名空间，MyLayout 是自定义属性所在的类，这是我们自己要写的部分，将在下面介绍。 -->
 41         <layout type = "Log4netExpand.MyLayout,log4nettest">
 42           <!-- 当用到property 时，就表明这是用户自定义的字段属性啦，是log4net 中所没有提供的字段。 -->
 43           <conversionPattern value = "%property{Event_Type} "/>
 44         </layout>
 45       </parameter>
 46
 47       <!-- 日志记录时间，RawTimeStampLayout 为默认的时间输出格式 -->
 48       <parameter>
 49         <parameterName value = "@log_date"/>
 50         <dbType value = "DateTime"/>
 51         <layout type = "log4net.Layout.RawTimeStampLayout"/>
 52         <!-- /这里呢是获取log4net 中提供的日志时间 -->
 53       </parameter>
 54
 55       <!-- 日志分类描述 -->
 56       <parameter>
 57         <parameterName value = "@EventCategory"/>
 58         <dbType value = "String"/>
 59         <size value = "50"/>
 60         <layout type = "Log4netExpand.MyLayout,log4nettest">
 61           <conversionPattern value = "%property{EventCategory}"/>
 62         </layout>
 63       </parameter>
 64
 65       <!-- 日志分类号 -->
 66       <parameter>
 67         <parameterName value = "@Event_ID"/>
 68         <dbType value = "Int32"/>
 69         <layout type = "Log4netExpand.MyLayout,log4nettest">
 70           <conversionPattern value = "%property{Event_ID}"/>
 71         </layout>
 72       </parameter>
 73
 74       <!-- 计算机IP -->
 75       <parameter>
 76         <parameterName value = "@ComputerName"/>
 77         <dbType value = "String"/>
 78         <size value = "50"/>
 79         <layout type = "Log4netExpand.MyLayout,log4nettest">
 80           <conversionPattern value = "%property{ComputerName}"/>
 81         </layout>
 82       </parameter>
 83
 84       <!-- 计算机Mac 信息 -->
 85       <parameter>
 86         <parameterName value = "@Mac_Address"/>
 87         <dbType value = "String"/>
 88         <size value = "50 "/>
 89         <layout type = "Log4netExpand.MyLayout, log4nettest">
 90           <conversionPattern value = "%property{Mac_Address}"/>
 91         </layout>
 92       </parameter>
 93
 94       <!-- 登陆系统用户名 -->
 95       <parameter>
 96         <parameterName value = "@UserName"/>
 97         <dbType value = "String"/>
 98         <size value = "50"/>
 99         <layout type = "Log4netExpand.MyLayout,log4nettest">
100           <conversionPattern value = "%property{UserName}"/>
101         </layout>
102       </parameter>
103
104       <!-- 事件来源类型，这里默认为Rier -->
105       <parameter>
106         <parameterName value = "@SourceType"/>
107         <dbType value = "String"/>
108         <size value = "20"/>
109         <layout type = "Log4netExpand.MyLayout,log4nettest">
110           <conversionPattern value = "%property{SourceType}"/>
111         </layout>
112       </parameter>
113
114       <!-- 事件来源 -->
115       <parameter>
116         <parameterName value = "@Source "/>
117         <dbType value = "String"/>
118         <size value = "50"/>
119         <layout type = "Log4netExpand.MyLayout,log4nettest">
120           <conversionPattern value = "%property{Source}"/>
121         </layout>
122       </parameter>
123
124       <!-- 事件描述 -->
125       <parameter>
126         <parameterName value = "@Description "/>
127         <dbType value = "String"/>
128         <size value = "4000"/>
129         <layout type = "Log4netExpand.MyLayout, log4nettest">
130           <conversionPattern value = "%property{Description}"/>
131         </layout>
132       </parameter>
133
134       <!-- 日志收集时间 -->
135       <parameter>
136         <parameterName value = "@CollectDate"/>
137         <dbType value = "DateTime"/>
138         <layout type="log4net.Layout.RawTimeStampLayout" />
139       </parameter>
140     </appender>
141
142     <!--记录到文件-->
143     <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
144       <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
145
146       <param name="File" value="Log\\INFO\\"/>
147       <param name="AppendToFile" value="true"/>
148       <param name="MaxFileSize" value="10240" />
149       <param name="MaxSizeRollBackups" value="100"/>
150       <param name="StaticLogFileName" value="false"/>
151       <param name="DatePattern" value="yyyyMMdd&quot;.txt&quot;"/>
152       <param name="RollingStyle" value="Date"/>
153       <layout type="log4net.Layout.PatternLayout">
154         <param name="ConversionPattern" value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 记录类：%logger 操作者ID：%property{Operator} 操作类型：%property{Action}%n 当前机器名:%property%n当前机器名及登录用户：%username %n               记录位置：%location%n 消息描述：%property{Message}%n 异常：%exception%n 消息：%message%newline%n%n" />
155       </layout>
156     </appender>
157
158     <!--sql server数据库2-->
159     <appender name="AdoNetAppender_SqlServer1" type="log4net.Appender.AdoNetAppender">
160       <bufferSize value="0"/>
161       <!--2.0这是对应sql2008 如是2000或2005另外配置-->
162       <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral,PublicKeyToken=b77a5c561934e089"/>
163
164       <!-- 连接数据库字符串 -->
165       <connectionString value="Data Source=.;Initial Catalog=Log;User ID=sa;Password=sa123;" />
166
167       <!-- 插入到表Log -->
168       <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message,@exception)"/>
169
170       <parameter>
171         <parameterName value="@log_date"/>
172         <dbType value="DateTime"/>
173
174         <layout type="log4net.Layout.PatternLayout">
175           <conversionPattern value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}" />
176         </layout>
177         <!-- <layout type="log4net.Layout.RawTimeStampLayout"/>-->
178       </parameter>
179       <parameter>
180         <parameterName value="@thread"/>
181         <dbType value="String"/>
182         <size value="255"/>
183         <!-- LogComponent 是类所在的命名空间，MyLayout 是自定义属性所在的类，这是我们自己要写的部分，将在下面介绍。 -->
184         <layout type="log4net.Layout.PatternLayout">
185           <conversionPattern value="%thread"/>
186         </layout>
187       </parameter>
188       <parameter>
189         <parameterName value="@log_level"/>
190         <dbType value="String"/>
191         <size value="50"/>
192         <layout type="log4net.Layout.PatternLayout">
193           <conversionPattern value="%level"/>
194         </layout>
195       </parameter>
196       <parameter>
197         <parameterName value="@logger"/>
198         <dbType value="String"/>
199         <size value="255"/>
200         <layout type="log4net.Layout.PatternLayout">
201           <conversionPattern value="%logger"/>
202         </layout>
203       </parameter>
204       <parameter>
205         <parameterName value="@message"/>
206         <dbType value="String"/>
207         <size value="4000"/>
208         <layout type="log4net.Layout.PatternLayout">
209           <conversionPattern value="%message"/>
210         </layout>
211       </parameter>
212       <parameter>
213         <parameterName value="@exception" />
214         <dbType value="String" />
215         <size value="2000" />
216         <layout type="log4net.Layout.ExceptionLayout" />
217       </parameter>
218     </appender>
219
220     <!--sqlite数据库-->
221     <appender name="AdoNetAppender_Sqllite" type="log4net.Appender.AdoNetAppender">
222       <bufferSize value="0"/>
223       <!--2.0这是对应sql2008 如是2000或2005另外配置-->
224       <!--<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral,PublicKeyToken=b77a5c561934e089"/>-->
225       <connectionType value="System.Data.SQLite.SQLiteConnection, System.Data.SQLite, Version=1.0.66.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139" />
226       <!-- 连接数据库字符串 -->
227       <!--<connectionString value="Data Source=.;Initial Catalog=Log;User ID=sa;Password=123;" />-->
228       <connectionString value="C:\\Users\\Administrator\\Desktop\\log4net\\Log4netExpand\\Test.db3;" />
229       <!-- 插入到表Log -->
230       <commandText value="INSERT INTO MAIN.[Log] ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message,@exception)"/>
231
232       <parameter>
233         <parameterName value="@log_date"/>
234         <dbType value="DateTime"/>
235
236         <layout type="log4net.Layout.PatternLayout">
237           <conversionPattern value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}" />
238         </layout>
239         <!-- <layout type="log4net.Layout.RawTimeStampLayout"/>-->
240       </parameter>
241       <parameter>
242         <parameterName value="@thread"/>
243         <dbType value="String"/>
244         <!--<size value="255"/>-->
245         <!-- LogComponent 是类所在的命名空间，MyLayout 是自定义属性所在的类，这是我们自己要写的部分，将在下面介绍。 -->
246         <layout type="log4net.Layout.PatternLayout">
247           <conversionPattern value="%thread"/>
248         </layout>
249       </parameter>
250       <parameter>
251         <parameterName value="@log_level"/>
252         <dbType value="String"/>
253         <!--<size value="50"/>-->
254         <layout type="log4net.Layout.PatternLayout">
255           <conversionPattern value="%level"/>
256         </layout>
257       </parameter>
258       <parameter>
259         <parameterName value="@logger"/>
260         <dbType value="String"/>
261         <!--<size value="255"/>-->
262         <layout type="log4net.Layout.PatternLayout">
263           <conversionPattern value="%logger"/>
264         </layout>
265       </parameter>
266       <parameter>
267         <parameterName value="@message"/>
268         <dbType value="String"/>
269         <!--<size value="4000"/>-->
270         <layout type="log4net.Layout.PatternLayout">
271           <conversionPattern value="%message"/>
272         </layout>
273       </parameter>
274       <parameter>
275         <parameterName value="@exception" />
276         <dbType value="String" />
277         <!--<size value="2000" />-->
278         <layout type="log4net.Layout.ExceptionLayout" />
279       </parameter>
280     </appender>
281   </log4net>
282
283   <system.web>
284     <compilation debug="true" targetFramework="4.0" />
285   </system.web>
286
287 </configuration>

我主要说下里面自定义属性的代码的分别代表意义：

1 2 3 4 5 6 7 8

<parameter>  96         <parameterName value = "@UserName"/>  97         <dbType value = "String"/>  98         <size value = "50"/>  99         <layout type = "Log4netExpand.MyLayout,log4nettest"> 100           <conversionPattern value = "%property{UserName}"/> 101         </layout> 102       </parameter>

其中MyLayout，是我们自己定义的类，下面有介绍；Log4netExpand是这个类的命名空间；log4nettest这个代表是aspx页面的命名空间。注意在此区分。

六、自定义类，这些类呢包含将要插入数据库中的自定义字段

命名空间为 Log4netExpand包含3个类：LogContent.cs、 MyLayout.cs 、MyMessagePatternConverter .cs

1)第一个LogContent类如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Log4netExpand
{
    /// <summary>
    /// 包含了所有的自定字段属性
    /// </summary>
    public class LogContent
    {
        /// <summary>
        /// 时间类型 均为3
        /// </summary>
        public int Event_Type { get; set; }

        /// <summary>
        /// 日志分类描述，自定义
        /// </summary>
        public string EventCategory { get; set; }

        /// <summary>
        /// 日志分类号
        /// </summary>
        public int Event_ID { get; set; }

        /// <summary>
        /// 计算机IP
        /// </summary>
        public string ComputerName { get; set; }

        /// <summary>
        /// 计算机Mac 地址
        /// </summary>
        public string Mac_Address { get; set; }

        /// <summary>
        /// 系统登陆用户
        /// </summary>
        public string UserName { get; set; }

        /// <summary>
        /// Rier
        /// </summary>
        public string SourceType { get; set; }

        /// <summary>
        /// Rier Recorder audit
        /// </summary>
        public string Source { get; set; }

        /// <summary>
        /// 日志描述信息
        /// </summary>
        public string Description { get; set; }

    }
}

2）第二个类MyLayout代码如下：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using log4net.Layout;
 6
 7 namespace Log4netExpand
 8 {
 9     class MyLayout : PatternLayout
10     {
11         public MyLayout()
12         {
13             this.AddConverter("property", typeof(MyMessagePatternConverter));
14         }
15     }
16 }

3）第三个类MyMessagePatternConverter 代码如下：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Reflection;
 6 using log4net.Layout.Pattern;
 7
 8 namespace Log4netExpand
 9 {
10     public class MyMessagePatternConverter : PatternLayoutConverter
11     {
12
13         protected override void Convert(System.IO.TextWriter writer, log4net.Core.LoggingEvent loggingEvent)
14         {
15
16             if (Option != null)
17             {
18
19                 // Write the value for the specified key
20
21                 WriteObject(writer, loggingEvent.Repository, LookupProperty(Option, loggingEvent));
22
23             }
24
25             else
26             {
27
28                 // Write all the key value pairs
29
30                 WriteDictionary(writer, loggingEvent.Repository, loggingEvent.GetProperties());
31
32             }
33
34             //if (Option != null)
35
36             //{
37
38             //    // Write the value for the specified key
39
40             //    WriteObject(writer, loggingEvent.Repository, loggingEvent.LookupProperty(Option));
41
42             //}
43
44             //else
45
46             //{
47
48             //    // Write all the key value pairs
49
50             //    WriteDictionary(writer, loggingEvent.Repository, loggingEvent.GetProperties());
51
52             //}
53
54         }
55
56
57
58         /// <summary>
59
60         /// 通过反射获取传入的日志对象的某个属性的值
61
62         /// </summary>
63
64         /// <param name="property"></param>
65
66         /// <returns></returns>
67
68         private object LookupProperty(string property, log4net.Core.LoggingEvent loggingEvent)
69         {
70
71             object propertyValue = string.Empty;
72
73
74
75             PropertyInfo propertyInfo = loggingEvent.MessageObject.GetType().GetProperty(property);
76
77             if (propertyInfo != null)
78
79                 propertyValue = propertyInfo.GetValue(loggingEvent.MessageObject, null);
80
81
82
83             return propertyValue;
84
85         }
86
87     }
88 }

七、代码页，实现通过log4net把日志（含自定一生属性）添加到数据库

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.UI;
 6 using System.Web.UI.WebControls;
 7
 8 using System.Management;
 9 using Log4netExpand;
10
11 namespace Log4netExpand
12 {
13     public partial class test : System.Web.UI.Page
14     {
15         protected void Page_Load(object sender, EventArgs e)
16         {
17
18         }
19         protected void Button1_Click(object sender, EventArgs e)
20         {
21             log4net.ILog log = log4net.LogManager.GetLogger("myLogger");
22
23             LogContent logmodel = new LogContent();
24             logmodel.Event_Type = 3;
25             logmodel.EventCategory = "登陆系统";
26             logmodel.Event_ID = 1;
27             logmodel.ComputerName = Request.UserHostAddress;
28             logmodel.Mac_Address = GetMacAddress();
29             logmodel.Source = "SS";
30             logmodel.SourceType = "1";
31             logmodel.UserName = "ADMIN";
32             logmodel.Description = "TEST";//在记录数据库操作时，可以在petapoco底层将sql语句放入其中。
33             LogHelper.WriteLog(logmodel);
34
35             lbMsg.Text = "数据记录成功！";
36         }
37
38         public string GetMacAddress()
39         {
40             string mac = "";
41             try
42             {
43                 //获取网卡硬件地址
44                 ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
45                 ManagementObjectCollection moc = mc.GetInstances();
46
47                 List<string> list = new List<string>();
48
49                 foreach (ManagementObject mo in moc)
50                 {
51                     if ((bool)mo["IPEnabled"] == true)
52                     {
53                         mac = mo["MacAddress"].ToString();
54
55                         list.Add(mac);
56                     }
57                 }
58                 moc = null;
59                 mc = null;
60
61                 mac = list[list.Count - 1];
62
63                 return mac;
64             }
65             catch
66             {
67                 return "unknow";
68             }
69         }
70     }
71 }

代码例子源代码： Demo下载