asp.net 日志管理(log4net)
因为缺少测试，项目经常报错，尽管我们都是用了 try catch 捕获了异常。可是一旦项目完成 发布到IIS上时候，我们并不能准确获取错误的信息。而且项目一旦庞大起来，调试起来 非常让人喷血。下面介绍一个我正在使用的 日志组件 log4net
1.首先下载 log4net 包：
http://logging.apache.org/log4net/
2.将log4net.dll添加到项目的引用
3.配置好web.config
Code<?xml version="1.0"?>
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
</sectionGroup>
</sectionGroup>
</sectionGroup>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"></section> //这个必须要 否则配置文件会不允许有log4net 节点
</configSections>
<appSettings>
</appSettings>
<log4net>
<!--定义输出到文件中-->
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<!--定义文件存放位置-->
<file value="UpFile3/debug/测试系统日志文件.txt" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd-HH:mm:ss" />
<layout type="log4net.Layout.PatternLayout">
<!--每条日志末尾的文字说明-->
<footer value="by NVCSH" />
<!--输出格式-->
<!--样例：2008-03-26 13:42:32,111 [10] INFO Log4NetDemo.MainClass [(null)] - info-->
<conversionPattern value="记录时间：%date 线程ID:[%thread] 日志级别：%-5level 出错类：%logger property:[%property{NDC}] - 错误描述：%message%newline" />
</layout>
</appender>
<!--定义输出到控制台命令行中-->
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</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-->
<!--<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-->
<!--定义日志的输出媒介，下面定义日志以四种方式输出。也可以下面的按照一种类型或其他类型输出。-->
<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" />
<!-- 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>
Code1
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
using System.Data;8
using System.Configuration;9
using System.Text;10
using log4net;11
12
[assembly: log4net.Config.DOMConfigurator()]13
public partial class TestApplication_TestApplication : System.Web.UI.Page14
{15
protected void Page_Load(object sender, EventArgs e)16
{17
if (!IsPostBack)18
{19
BindBasicData();20
}21
private void BindBasicData()22
{23
try24
{25
throw new Exception();26
}27
catch(Exception ex)28
{29
ILog log= log4net.LogManager.GetLogger("aa"); 30
log.Error("异常：测试申请新增"+ex.Message, ex) ; //日志将写在 配置文件中你配置的位置中。。31
}32
finally33
{34
//完成了进行内存清理；35
ViewState.Clear();36
Dispose();37
}38
}