I have configured glassfish 3 to use SLF4J in the past by using the SLF4J JUL bridge and it worked fine. The problem I'm having now is that if I use my same setup, SLF4J complains about there being duplicate SLF4J bindings on the classpath and after searching, glassfish itself contains those reference.
How do I get SLF4J working? I tried making my dependency upon the SLF4J-API as provided, and then removed LogBack Classic since glassfish already contains some logback code. Doing those things doesn't yield any successful results.
Walter
No, you do not need to recompile your application. You can switch to a different logging system by removing the previous SLF4J provider and replacing it with the provider of your choice. For example, if you were using the NOP implementation and would like to switch to reload4j, simply replace slf4j-nop.
This is the main purpose of SLF4J (Simple Logging Facade for Java) – a logging abstraction which helps to decouple your application from the underlying logger by allowing it to be plugged in – at runtime.
Bindings are basically implementations of a particular SLF4J class meant to be extended to plug in a specific logging framework. By design, SLF4J will only bind with one logging framework at a time. Consequently, if more than one binding is present on the classpath, it will emit a warning.
SLF4J stands for Simple Logging Facade for Java. It provides a simple abstraction of all the logging frameworks. It enables a user to work with any of the logging frameworks such as Log4j, Logback, JUL (java. util.
This may helps you
Download Glassfish 4, SLF4J and Logback
Stop gf4
$GF_INSTALL\bin>asadmin stop-domain
and then
Copy
- jul-to-slf4j-1.7.5
- slf4j-api-1.7.5
- logback-core-1.0.13
- logback-classic-1.0.13
to
$GF_INSTALL/glassfish/lib/endorsed
Create logback.xml in
$GF_INSTALL/glassfish/domains/domain1/config
containing
<configuration debug="true" scan="true">
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file>/tmp/gf_server.log</file>
<append>true</append>
<encoder>
<Pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{52} - %msg%n</Pattern>
</encoder>
</appender>
<root>
<level value="INFO"/>
<appender-ref ref="FILE"/>
</root>
</configuration>
Modify
$GF_INSTALL/glassfish/domains/domain1/config/logging.properties
and replace
handlers=java.util.logging.ConsoleHandler
handlerServices=com.sun.enterprise.server.logging.GFFileHandler
java.util.logging.ConsoleHandler.formatter=com.sun.enterprise.server.logging.UniformLogFormatter
com.sun.enterprise.server.logging.GFFileHandler.formatter=com.sun.enterprise.server.logging.ODLLogFormatter
com.sun.enterprise.server.logging.GFFileHandler.file=${com.sun.aas.instanceRoot}/logs/server.log
com.sun.enterprise.server.logging.GFFileHandler.rotationTimelimitInMinutes=0
com.sun.enterprise.server.logging.GFFileHandler.flushFrequency=1
java.util.logging.FileHandler.limit=50000
com.sun.enterprise.server.logging.GFFileHandler.logtoConsole=false
com.sun.enterprise.server.logging.GFFileHandler.rotationLimitInBytes=2000000
com.sun.enterprise.server.logging.GFFileHandler.excludeFields=
com.sun.enterprise.server.logging.GFFileHandler.multiLineMode=true
com.sun.enterprise.server.logging.SyslogHandler.useSystemLogging=false
java.util.logging.FileHandler.count=1
com.sun.enterprise.server.logging.GFFileHandler.retainErrorsStasticsForHours=0
log4j.logger.org.hibernate.validator.util.Version=warn
com.sun.enterprise.server.logging.GFFileHandler.maxHistoryFiles=0
com.sun.enterprise.server.logging.GFFileHandler.rotationOnDateChange=false
java.util.logging.FileHandler.pattern=%h/java%u.log
java.util.logging.FileHandler.formatter=java.util.logging.XMLFormatter
with
handlers=org.slf4j.bridge.SLF4JBridgeHandler
handlerServices=com.sun.enterprise.server.logging.GFFileHandler
java.util.logging.ConsoleHandler.formatter=com.sun.enterprise.server.logging.UniformLogFormatter
com.sun.enterprise.server.logging.GFFileHandler.formatter=com.sun.enterprise.server.logging.ODLLogFormatter
com.sun.enterprise.server.logging.GFFileHandler.file=/tmp/server.log
com.sun.enterprise.server.logging.GFFileHandler.rotationTimelimitInMinutes=0
com.sun.enterprise.server.logging.GFFileHandler.flushFrequency=1
java.util.logging.FileHandler.limit=50000
com.sun.enterprise.server.logging.GFFileHandler.logtoConsole=false
com.sun.enterprise.server.logging.GFFileHandler.rotationLimitInBytes=2000000
com.sun.enterprise.server.logging.GFFileHandler.excludeFields=
com.sun.enterprise.server.logging.GFFileHandler.multiLineMode=true
com.sun.enterprise.server.logging.SyslogHandler.useSystemLogging=false
java.util.logging.FileHandler.count=1
com.sun.enterprise.server.logging.GFFileHandler.retainErrorsStasticsForHours=0
log4j.logger.org.hibernate.validator.util.Version=warn
com.sun.enterprise.server.logging.GFFileHandler.maxHistoryFiles=0
com.sun.enterprise.server.logging.GFFileHandler.rotationOnDateChange=false
java.util.logging.FileHandler.pattern=%h/java%u.log
com.sun.enterprise.server.logging.GFFileHandler.formatter=com.sun.enterprise.server.logging.UniformLogFormatter
com.sun.enterprise.server.logging.GFFileHandler.alarms=false
Add this two new JVM options to
domain->configs->config->java-config
in
$GF_INSTALL/glassfish/domains/domain1/config/domain.xml
<jvm-options>-Djava.util.logging.config.file=${com.sun.aas.instanceRoot}/config/logging.properties</jvm-options>
<jvm-options>-Dlogback.configurationFile=file:///${com.sun.aas.instanceRoot}/config/logback.xml</jvm-options>
then start gf4 again
$GF_INSTALL\bin>asadmin start-domain
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