配置文件可以参考上篇博文【.NET】log4net配置文件解析.
先在Global.aspx中添加这样一句代码,来读取配置文件,初始化log4net的环境.
public class Global : System.Web.HttpApplication
{
protected void Application_Start(object sender, EventArgs e)
{
log4net.Config.XmlConfigurator.Configure();
}
这个类包括了自定义属性,就是所有要写入数据库的字段,对应了配置文件insert语句的内容.
using System.Web;
using System.Web.SessionState;
namespace LogDB
{
/// <summary>
///LogMessage 的摘要说明
/// </summary>
public class LogMessage : IRequiresSessionState
{
public LogMessage() { }
public LogMessage(string userID, string userName,string ip,string clazz,string method,string result)
{
this.userid = userID;
this.username = userName;
this.ip = ip;
this.clazz = clazz;
this.method = method;
this.result = result;
}
private string userid;
public string Userid
{
get { return userid; }
set { userid = value; }
}
private string username;
public string Username
{
get { return username; }
set { username = value; }
}
private string ip;
public string Ip
{
get{return ip;}
set{ip=value;}
}
private string clazz;
public string Clazz
{
get{return clazz;}
set{clazz=value;}
}
private string method;
public string Method
{
get{return method;}
set{method=value;}
}
private string result;
public string Result
{
get { return result; }
set { result = value; }
}
}
}
这个类自定义了日志输出类型,实现思路是把自定义的字段放进Hashtable,有多少个自定义字段就写Add多少个,字段名称和配置文件保持一致,这里的命名空间和配置文件如下部分对应.
using System;
using System.Collections;
using System.IO;
using log4net.Core;
using log4net.Layout.Pattern;
using log4net.Util;
using log4net.Layout;
namespace LogDB
{
public class CustomLayout : log4net.Layout.LayoutSkeleton
{
public const string DefaultConversionPattern = "%message%newline";
public const string DetailConversionPattern = "%timestamp [%thread] %level %logger %ndc - %message%newline";
private static Hashtable s_globalRulesRegistry;
private string m_pattern;
private PatternConverter m_head;
private Hashtable m_instanceRulesRegistry = new Hashtable();
static CustomLayout()
{
s_globalRulesRegistry = new Hashtable(6);
s_globalRulesRegistry.Add("username", typeof(UserNamePatternConverter));
s_globalRulesRegistry.Add("userid", typeof(UserIdPatternConverter));
s_globalRulesRegistry.Add("ip", typeof(IpPatternConverter));
s_globalRulesRegistry.Add("clazz", typeof(ClazzPatternConverter));
s_globalRulesRegistry.Add("method", typeof(MethodPatternConverter));
s_globalRulesRegistry.Add("result", typeof(ResultPatternConverter));
}
//--------------------------------------------------------------------
public CustomLayout()
: this(DefaultConversionPattern)
{ }
public CustomLayout(string pattern)
{
IgnoresException = true;
m_pattern = pattern;
if (m_pattern == null)
{
m_pattern = DefaultConversionPattern;
}
ActivateOptions();
}
public string ConversionPattern
{
get { return m_pattern; }
set { m_pattern = value; }
}
/// <summary>
/// 对Hashtable中的值进行转换
/// </summary>
/// <param name="pattern"></param>
/// <returns></returns>
virtual protected PatternParser CreatePatternParser(string pattern)
{
PatternParser patternParser = new PatternParser(pattern);
foreach (DictionaryEntry entry in s_globalRulesRegistry)
{
patternParser.PatternConverters[entry.Key] = entry.Value;
}
foreach (DictionaryEntry entry in m_instanceRulesRegistry)
{
patternParser.PatternConverters[entry.Key] = entry.Value;
}
return patternParser;
}
override public void ActivateOptions()
{
m_head = CreatePatternParser(m_pattern).Parse();
PatternConverter curConverter = m_head;
while (curConverter != null)
{
PatternLayoutConverter layoutConverter = curConverter as PatternLayoutConverter;
if (layoutConverter != null)
{
if (!layoutConverter.IgnoresException)
{
this.IgnoresException = false;
break;
}
}
curConverter = curConverter.Next;
}
}
override public void Format(TextWriter writer, LoggingEvent loggingEvent)
{
if (writer == null)
{
throw new ArgumentNullException("writer");
}
if (loggingEvent == null)
{
throw new ArgumentNullException("loggingEvent");
}
PatternConverter c = m_head;
while (c != null)
{
c.Format(writer, loggingEvent);
c = c.Next;
}
}
public void AddConverter(ConverterInfo converterInfo)
{
AddConverter(converterInfo.Name, converterInfo.Type);
}
public void AddConverter(string name, Type type)
{
if (name == null) throw new ArgumentNullException("name");
if (type == null) throw new ArgumentNullException("type");
if (!typeof(PatternConverter).IsAssignableFrom(type))
{
throw new ArgumentException("The converter type specified [" + type + "] must be a subclass of log4net.Util.PatternConverter", "type");
}
m_instanceRulesRegistry[name] = type;
}
public sealed class ConverterInfo
{
private string m_name;
private Type m_type;
public ConverterInfo()
{ }
public string Name
{
get { return m_name; }
set { m_name = value; }
}
public Type Type
{
get { return m_type; }
set { m_type = value; }
}
}
}
}
logUtil类封装了记录日志的方法,共外部调用,参数为各自定义字段,方法体内调用log4net的方法.
using log4net;
/// <summary>
///LogUtil 的摘要说明
/// </summary>
public class LogUtil
{
public LogUtil()
{
}
private LogDB.LogMessage message = null;
public void WriteLog(string strLoggerName, string userID, string userName,string ip,string clazz,string method,string result)
{
log4net.ILog log = log4net.LogManager.GetLogger(strLoggerName);
message = new LogDB.LogMessage(userID, userName,ip,clazz,method,result);//用到字段辅助类
log.Info(message);
}
}
添加default.aspx,在后台代码中编写测试:
namespace LogDB
{
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
LogUtil logUtil = new LogUtil();
logUtil.WriteLog("AuthoritySystem", "1", "1", "1", "1", "1", "1");
logUtil.WriteLog("BaseSystem", "1", "1", "1", "1", "1", "1");
logUtil.WriteLog("ExamSystem", "1", "1", "1", "1", "1", "1");
logUtil.WriteLog("EvaluationSystem", "1", "1", "1", "1", "1", "1");
logUtil.WriteLog("FreshSystem", "1", "1", "1", "1", "1", "1");
}
}
}
生成后运行,所有的操作都被记录在了数据库里,5个子系统的日志分别记录在5张表中.
原文：http://blog.csdn.net/zhuanzhe117/article/details/42388889