Looked at quite a few examples on this and have seen some confusing stuff. Here is the log4j.xml file
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-5p %c{1} - %m%n"/>
</layout>
</appender>
<appender name="file" class="org.apache.log4j.RollingFileAppender">
<param name="append" value="false" />
<param name="maxFileSize" value="1000KB" />
<param name="maxBackupIndex" value="5" />
<!-- For Tomcat -->
<param name="file" value="${catalina.home}/logs/demandManage.log" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
</layout>
</appender>
<logger name="com.xxx.demand.domain.data" additivity="true">
<level value="debug" />
<appender-ref ref="file"/>
</logger>
<logger name="com.xxx.rita.serviceserver.controller.AbstractRestController" additivity="true">
<level value="debug" />
<appender-ref ref="file"/>
<appender-ref ref="console" />
</logger>
<logger name="com.xxx.dao.AbstractDAOImpl" additivity="true">
<level value="debug" />
<appender-ref ref="file"/>
<appender-ref ref="console" />
</logger>
<logger name="org.hibernate" >
<level value="warn" />
<appender-ref ref="file"/>
</logger>
<root>
<priority value ="warn" />
<appender-ref ref="console" />
<appender-ref ref="file"/>
</root>
</log4j:configuration>
In my java class:
package com.xxx.dao;
public abstract class AbstractDAOImpl<T, ID extends Serializable> implements AbstractDAO<T,ID>{
private Logger logger = LoggerFactory.getLogger(com.xxx.dao.AbstractDAOImpl.class);
#SuppressWarnings("unchecked")
public T read(ID id){
T response = (T) getCurrentSession().get(clazz, id);
if(response==null){
logger.error(RiskTaker.name.get()+ " tried to load " + clazz + " of " +id);
throw new RuntimeException("hibernate object did not exist");
}
return response;
}
}
So when I am hitting the logger.error message with this configuration, nothing is going to the demandManage.log file or the console. I don't see what's wrong. When I had root set to debug, hibernate of course practically fills up that log file so it does work.
Is there a difference between using level vs priority? Like a slfj4 vs appache logger? The root sets priority but the child loggers are using level.
I am starting tomcat in debug mode and know I am hitting those logger.error statements but the file remains empty. May be I need to flush to it right away?
I previously had the logger in the xml file as fully qualified and in the java class as just class name only but fixing that did nothing. I am wondering what I am missing. Thank you in advance.
Related
This is my Log4j config file:
<!-- 3rdparty Loggers -->
<logger name="org.springframework.core">
<level value="error" />
</logger>
<logger name="org.springframework.beans">
<level value="error" />
</logger>
<logger name="org.springframework.context">
<level value="error" />
</logger>
<logger name="org.springframework.web">
<level value="error" />
</logger>
<logger name="org.hibernate">
<level value="error" />
</logger>
<logger name="org.springframework.security">
<level value="error" />
</logger>
<!-- Root Logger -->
<root>
<priority value="warn" />
<appender-ref ref="console" />
</root>
.
And I use a logge into a service for example, like this:
private static final Logger LOG = LoggerFactory.getLogger(CommessaServiceImpl.class);
and then:
LOG.info("Start method");
But I can see nothing about it into my console...
Why??
Because you are logging info(LOG.info) and logging level is set to error and warn.
Change it to
<root>
<priority value="info" />
<appender-ref ref="console" />
</root>
There are a couple of reasons you will not see logs.
You have not defined any appenders. You need something like:
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<!-- Pattern to output the caller's file name and line number -->
<param name="ConversionPattern" value="%d{dd-MM-yy HH:mm:ss,SS} %5p [%t] (%F:%L) - %m%n" />
</layout>
</appender>
Your log levels are all set to "error" and you are trying to log at the "info" level.
I have two appenders, one for file and another for console.
I want Eclipse console to show both file and console logs, but in the same time file to show only its own logs.
How do I do that?
Here is conf.
<appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
<param name="Append" value="true"/>
<param name="Threshold" value="INFO"/>
<param name="File" value="${jboss.server.log.dir}/file.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p %m%n"/>
</layout>
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
<param name="Target" value="System.out"/>
<param name="Threshold" value="INFO"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d %-5p [%c{1}] %m%n"/>
</layout>
Also, file log is showing only logs from specific package.
<category name="com.project.example" additivity="false">
<appender-ref ref="FILE"/>
<priority value="INFO"/>
</category>
And root:
<root>
<priority value="${jboss.server.log.threshold}"/>
<appender-ref ref="CONSOLE"/>
<appender-ref ref="FILE"/>
</root>
you have to configure your appender in logger tag as below.
<logger name="com.project.example">
<appender-ref ref="FILE" />
<appender-ref ref="CONSOLE" />
</logger>
<root>
<level value="debug" />
<appender-ref ref="CONSOLE" />
</root>
I'm using log4j for logs.
I have a class that i want to print to the console only log.info level,
And print to some file log.info + log.debug levels (The same class).
I tried to setup the log4j.xml as follows :
<!--appender to parser file-->
<appender name="parserFile" class="org.apache.log4j.FileAppender">
<param name="File" value="/var/log/java/parser/parser.log" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{E MMM dd HH:mm:ss} %c : %m%n" />
</layout>
</appender>
<!--appender to the stdout-->
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.out"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%-5p %c{1} - %m%n"/>
</layout>
</appender>
<logger name="parser.ParserMainJava">
<level value="debug" />
<appender-ref ref="parserFile" />
</logger>
<logger name="parser.ParserMainJava">
<level value="info" />
<appender-ref ref="console" />
</logger>
This is my configuration but I can't use 2 loggers with the same package name.
Any suggestions ?
Thanks,
Or.
Just define one logger for "parser.ParserMainJava" with debug level, and add the following parameter to your console appender definition:
<param name="Threshold" value="INFO"/>
In my case I needed to adjust my AppenderRef. Adding the param element to the ConsoleAppender did not work. This element inside Loggers is good.
<Root level="debug">
<AppenderRef ref="FileAppender" />
<AppenderRef ref="ConsoleAppender" level="info"/>
</Root>
I have a problem with the configuration of my logging with log4j. All the log messages are shown as expected in the root.log file, but the stdout, however, does only show a subset of the root.log although I configured it to be the same.
EDIT: Precisely I am missing all messages from a.b.
EDIT 2: I am not absolutely sure, but I think that some messages from a.b. (INFO and DEBUG) get loggedd on stdout, others don't. Might that be a problem related to threads? E.g. some threads doing logging, some not?
The following is my log4j.xml, is there eventually a mistake?
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd" >
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{HH:mm:ss,SSS} [%t] (%C:%L) %-5p - %m%n" />
</layout>
</appender>
<appender name="FILE_ALL" class="org.apache.log4j.RollingFileAppender">
<param name="File" value="${catalina.home}/logs/root.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-4r (%F:%L) %-5p %x - %m%n" />
</layout>
</appender>
<logger name="a.b.master">
<level value="DEBUG" />
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE_ALL" />
</logger>
<logger name="a.b.master.orm.support.HibernateSessionFilter">
<level value="INFO" />
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE_ALL" />
</logger>
<logger name="a.b.master.aop.hibernate.OpenSessionInRequestInterceptor">
<level value="info" />
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE_ALL" />
</logger>
<root>
<level value="INFO"/>
<appender-ref ref="CONSOLE"/>
<appender-ref ref="FILE_ALL"/>
</root>
</log4j:configuration>
I am using Commons Logging as implementation.
Thanks for the help!
Your configuration is very similar to mine where my logs are dumped into the console and to some remote host. Try this to see if it works for you:-
<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>
<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
...
</appender>
<appender name="FILE_ALL" class="org.apache.log4j.RollingFileAppender">
...
</appender>
<logger name="a.b.master">
<level value="debug" />
</logger>
<logger name="a.b.master.orm.support.HibernateSessionFilter">
<level value="info" />
</logger>
<logger name="a.b.master.aop.hibernate.OpenSessionInRequestInterceptor">
<level value="info" />
</logger>
<root>
<priority value="info"/>
<appender-ref ref="CONSOLE"/>
<appender-ref ref="FILE_ALL"/>
</root>
</log4j:configuration>
I don't think you need to define appender-ref in every a.b logger since it should pick up the appender from root. Also, I use priority instead of logger for root. Otherwise, your configuration looks identical to mine and I'm able to get mine working properly. If this doesn't work for you for some reason, I would suggest you to remove your custom a.b loggers from the configuration to see if you are able to get the a.b messages in your console.
Also, just FYI, I'm sure you already know this, but if your root is set to use "info", then there's really no need to set your custom a.b logger to "info" too. I usually leave my root to "warn" and have my custom loggers to override that with either "debug" or "info".
I found the solution even if not the problem directly. I added a parameter to my ConsoleAppender that everything is printed to the stderr. This now works. I guess its a problem of eclipse or log4j because if i am starting the app from the terminal (console) I can see all log messages properly.
<appender name="console" class="org.apache.log4j.ConsoleAppender">
<param name="Target" value="System.err" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-4r (%F:%L) %-5p %x - %m%n" />
</layout>
</appender>
I have been on log4j for sometime and read quite a few articles and all look pretty straight forward but when I implement it, it doesnt seem to work.
I have the below requirement :
1-> Need to have 2 files created for 2 different packages :
So I created as per log4j specs and it creates 2 files based on 2 different packages but only the logs logged from our application gets logged into those files.
The logs generated from Spring or Hibernate and Ibatis do not get logged to the file at all, but they get and all other logs do get logged to the console.
I am placing the log4j.xml that I am using, any help would be appreciated :
Also I have tried lots of combinations like from root appender removed the references already mentioned in the logger, adding them back to the root, add addivity to loggers but nothing worked:
<appender name="ConsoleAppender" class="org.apache.log4j.ConsoleAppender">
<param name="Threshold" value="DEBUG"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{ISO8601} DSL Service(CONSOLE) %-5p %c [%t]: %m%n%n"/>
</layout>
</appender>
<appender name="FEPOCServiceLog"
class="org.apache.log4j.RollingFileAppender">
<param name="Append" value="true"/>
<param name="maxFileSize" value="100KB" />
<param name="maxBackupIndex" value="5" />
<param name="File" value="C:\\tmp\\DSLService_1.0.log" />
<param name="threshold" value="DEBUG"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{ISO8601} DService(CONSOLE) %-5p %c [%t]: %m%n%n" />
</layout>
</appender>
<appender name="iServiceLog"
class="org.apache.log4j.RollingFileAppender">
<param name="maxFileSize" value="10MB" />
<param name="maxBackupIndex" value="5" />
<param name="File" value="C:\\tmp\\iService_1.0.log" />
<param name="threshold" value="DEBUG"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{ISO8601} iService(CONSOLE) %-5p %c [%t]: %m%n%n" />
</layout>
</appender>
Hope this helps :
<logger name="com.fepoc.services.dataservice">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
<logger name="com.fepoc.mpbit">
<level value="DEBUG"/>
<appender-ref ref="iServiceLog"/>
</logger>
<logger name="net.sf.hibernate">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
<logger name="org.hibernate">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
<logger name="com.mchange.v2">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
<logger name="com.ibatis.sqlmap">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
<logger name="org.springframework">
<level value="DEBUG"/>
<appender-ref ref="FEPOCServiceLog"/>
</logger>
...
<root>
<priority value ="debug" />
<appender-ref ref="ConsoleAppender"/>
<appender-ref ref="FEPOCServiceLog"/>
<appender-ref ref="iServiceLog"/>
Thanks,
NK
The problem is that Spring and Hibernate don't use log4j.
Hibernate internally uses slf4j, so you need to add slf4j-log4j binding to your classpath in order to redirect its output to log4j, see SLF4J user manual.
Spring uses Commons Logging, you can redirect its output to log4j via slf4j by adding jcl-slf4j bridge and slf4j-log4j binding, see Logging Dependencies in Spring.