Read the n log4net tutorial, although a lot of it is introduced in the Web project using Log4net, but none of the experiment was successful.
Dizzy death. Studied for half an hour, finally finished.
1. Modify AssemblyInfo.cs
[Assembly:log4net. Config.xmlconfigurator (configfile= "Log4net.config", Watch=true)]
2. Modify Web.config
<configuration>
<configSections>
<section name= "log4net" type= "log4net". Config.log4netconfigurationsectionhandler, log4net "/>
</configSections>
<system.web>
... System Auto-generated configuration
</system.web>
</configuration>
3. Create a new class Logger.cs
public class Logger
{
private static log4net. ILog Log=null;
private static Object Lockhelper = new Object ();
public static log4net. ILog Log
{
Get
{
if (log = = null)
{
Lock (Lockhelper)
{
if (log==null)
Log = Log4net. Logmanager.getlogger ("logger");
}
}
return log;
}
}
}
4. New Log4net.config
<?xml version= "1.0" encoding= "Utf-8"?>
<configuration>
<log4net debug= "false" >
<appender name= "Logfileappender" type= "log4net". Appender.fileappender ">
<file value= "Log.txt"/>
<appendtofile value= "true"/>
<layout type= "log4net. Layout.patternlayout ">
<conversionpattern value= "%date [%thread]%-5level%logger [%NDC]-%message%newline"/>
</layout>
</appender>
<root>
<level value= "All"/>
<appender-ref ref= "Logfileappender"/>
</root>
</log4net>
</configuration>
5. Calling methods
Logger.Log.Debug ("Hello");
6. Make sure that the Web folder has write permissions.
7.OK
When you have problems using log4net, set up in Log4net.config
<log4net debug= "true" >
This will enable you to see the error message.
At first I did not set the Write permission for the file, so the use did not succeed. Then I turned on debug and I saw the error message, and it was done. So when you have problems using log4net, be sure to turn on debug and look at the error message, which is very useful.
