How to configure logging in Spring.NET using log4net? - log4net

Question

I would like use from Spring.NET Aspect library Logging aspect together with log4Net.
I found this article how to use log4Net with Common Logging API.
My test application is console and based on .NET 4.0 Client profile.
1st Attempt
So I refer in my project these libraries:
Spring.Core version 1.3.2.40943, runtime v4.0.30319
Spring.AOP version 1.3.2.40943, runtime v4.0.30319
Common.Logging version: 1.2.0.0, runtime v1.0.3705
Assemblies above I have from Program Files\Spring.NET 1.3.2\bin\net\4.0
log4net version: 1.2.10.0, runtime v2.0.50727
I couldn’t find assembly Common.Logging.Log4Net.dll in Program Files\Spring.NET 1.3.2\bin
\net\4.0 so I download this assembly from SourceForge:
Common.Logging.Log4Net version 2.0.0.0 runtime v2.0.50727
I configured logger in app.config:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<sectionGroup name="spring">
<section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
<section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core"/>
</sectionGroup>
<sectionGroup name="common">
<section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />
</sectionGroup>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<common>
<logging>
<factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4Net">
<arg key="configType" value="INLINE" />
</factoryAdapter>
</logging>
</common>
<log4net>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger %ndc - %message%newline" />
</layout>
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="ConsoleAppender" />
</root>
<logger name="myLogger">
<level value="DEBUG" />
</logger>
</log4net>
<spring>
<context>
<resource uri="config://spring/objects"/>
</context>
<objects xmlns="http://www.springframework.net">
</objects>
</spring>
</configuration>
and tried this:
ILog log = LogManager.GetLogger("myLogger");
log.Error("hello world");
I got this runtime error:
{"Could not configure Common.Logging from configuration section
'common/logging'."}
Inner exception:
{"An error occurred creating the configuration section handler for
common/logging: Unable to create type
'Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter,
Common.Logging.Log4Net' (E:\C#
PROJECTS\STUDY\SPRING.NET\SpringNet.Aspects\LoggingWithLog4Net\bin\Debug\LoggingWithLog4Net.vshost.exe.Config
line 18)"}
StackTrace:
at System.Configuration.BaseConfigurationRecord.EvaluateOne(String[]
keys, SectionInput input, Boolean isTrusted, FactoryRecord
factoryRecord, SectionRecord sectionRecord, Object parentResult) at
System.Configuration.BaseConfigurationRecord.Evaluate(FactoryRecord
factoryRecord, SectionRecord sectionRecord, Object parentResult,
Boolean getLkg, Boolean getRuntimeObject, Object& result, Object&
resultRuntimeObject) at
System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
configKey, Boolean getLkg, Boolean checkPermission, Boolean
getRuntimeObject, Boolean requestIsHere, Object& result, Object&
resultRuntimeObject) at
System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
configKey, Boolean getLkg, Boolean checkPermission, Boolean
getRuntimeObject, Boolean requestIsHere, Object& result, Object&
resultRuntimeObject) at
System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String
configKey, Boolean getLkg, Boolean checkPermission, Boolean
getRuntimeObject, Boolean requestIsHere, Object& result, Object&
resultRuntimeObject) at
System.Configuration.BaseConfigurationRecord.GetSection(String
configKey) at
System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String
sectionName) at
System.Configuration.ConfigurationManager.GetSection(String
sectionName) at
System.Configuration.ConfigurationSettings.GetConfig(String
sectionName) at
Common.Logging.ConfigurationReader.GetSection(String sectionName)
at Common.Logging.LogManager.BuildLoggerFactoryAdapter()
2nd Attempt
I think problem must be in version of assembly Common.Logging.Log4Net version 2.0.0.0 runtime v2.0.50727. Because I used Common.Logging version: 1.2.0.0, runtime v1.0.3705.
So I changed Common.Logging version from 1.2.0.0 to 2.0.0.0. I used Common.Logging from SourceForge.
And tested again. I got this error:
Unable to create type
'Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter,
Common.Logging.Log4Net'
Inner exception:
{"Could not load file or assembly 'Common.Logging.Log4Net' or one of
its dependencies. The system cannot find the file
specified.":"Common.Logging.Log4Net"}
StackTrace:
at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean
throwOnError, Boolean ignoreCase, Boolean reflectionOnly,
StackCrawlMarkHandle stackMark, Boolean loadTypeFromPartialName,
ObjectHandleOnStack type) at
System.RuntimeTypeHandle.GetTypeByName(String name, Boolean
throwOnError, Boolean ignoreCase, Boolean reflectionOnly,
StackCrawlMark& stackMark, Boolean loadTypeFromPartialName) at
System.RuntimeType.GetType(String typeName, Boolean throwOnError,
Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
at System.Type.GetType(String typeName, Boolean throwOnError, Boolean
ignoreCase) at
Common.Logging.ConfigurationSectionHandler.ReadConfiguration(XmlNode
section) in
c:\CCNet\netcommon\trunk\modules\Common.Logging\src\Common\Common.Logging\Logging\ConfigurationSectionHandler.cs:line
130
3rd and last attempt
Finally I found assembly Common.Logging.Log4Net version 1.2.0.2 in spring examples so I used it.
Common.Logging.Log4Net version 1.2.0.2
Common.Logging version 1.2.0.0
log4Net 1.2.10.0
Tested and got again error:
{"Could not configure Common.Logging from configuration section
'common/logging'."}
Inner exception:
{"An error occurred creating the configuration section handler for
common/logging: Unable to create type
'Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter,
Common.Logging.Log4Net' (E:\C#
PROJECTS\STUDY\SPRING.NET\SpringNet.Aspects\LoggingWithLog4Net\bin\Debug\LoggingWithLog4Net.vshost.exe.Config
line 18)"}
StackTrace:
{"Unable to create type
'Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter,
Common.Logging.Log4Net'"}
I am really confuse what I do bad? Some problem with assemblies version?

Answer 1

For Spring.NET 1.3.2 you should use:
Common.Logging 2.0.0
Common.Logging.Log4Net 2.0.0
log4net 1.2.10
Make sure the last two log4net dll's are copied to the output directory. Since your code doesn't reference it directly, they might not be copied by Visual Studio.

Answer 2

Also, instead of
<resource uri="config://springs/objects"/>
Try
<resource uri="config://spring/objects"/>
In your config file the sectionGroup name is "spring", NOT "springs". I copied from yours to make mine work and got in the same problem. Finally figured out why.
Hope that helps!

Answer 3

Another possibility is:
Common.Logging 2.1.1
Common.Logging.Log4Net 2.1.1
log4net 1.2.10
I recommend skipping Common.Logging 2.1.0 as it did throw this exception when reading perfectly valid app.config section:
"Unable to cast object of type 'System.Configuration.DefaultSection' to type 'System.Configuration.AppSettingsSection'."
Installing 2.1.1 fixed the problem.