In a standalone application I'm using log4j for logging and have configured it with the following properties file:
# Root logger option
log4j.rootLogger=WARN, file, stdout
log4j.logger.com.tr = INFO
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=log4j.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
In Windows this works as expected, producing a log4j.log file in the current working directory. When I run the application in Linux, it reports no error but does not generate the log file. The logger outputs to console just fine.
I tried programatically changing the File property from a relative path to an absolute path and that changed nothing.
I've also verified that if I supply an invalid file name the tool reports an error saying the file cannot be generated. So I'm baffled as to why no error is being reported and no file is being generated.
I've searched my hard disk for the file to verify it's not being generated elsewhere, and it's not.
Any help here would be much appreciated.
Related
I have a class Store which contains statements like "log.info(...)". I can see the log messages with the log file created when running the program. However, when I run JUnit tests, the log file won't be created, but I still want to see log messages. The logger is:
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
And my log4j properties:
log4j.rootLogger=DEBUG, STDOUT, file
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout
log4j.appender.STDOUT.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=mylogs.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{dd-MM-yyyy HH:mm:ss} %-5p %c{1}:%L - %m%n
The questions is, how to also create the log file and log messages when running my Junit tests?
Edit:
Part of the test log property:
log4j.rootLogger=ERROR, Console
log4j.logger.play=DEBUG
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d{ABSOLUTE} %-5p ~ %m%n
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=testlog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{dd-MM-yyyy HH:mm:ss} %-5p %c{1}:%L - %m%n
According to that configuration, you'd probably expect to have a testlog.log file in the root of your project.
Nonetheless, the file appender is not referenced so the messages will only be logged using the Console appender. However, your rootLogger is set to ERROR level so messages below this level, such as DEBUG, INFO or WARN will be discarded.
You can either change your rootLogger configuration, from which all non-explicitly configured loggers inherit, just like in your other log4j.properties, or define a logger for your package, setting it to DEBUG (or whatever level you want) and use both the appends: log4j.logger.my.package.here=DEBUG, Console, file.
Further reading resources:
- log4j v1.2 into
- log4j 1.2 configuration
P.S.: Please note that sometimes Eclipse has issues with the file-system changes and does not automatically update the project files. If that happens. after running your test, try right clicking your project in the Navigator view, and selecting refresh, then scroll to the end where your pom is. Alternatively open the file explorer of your choice, go to your project root on the disk and you should see the testlog.log file.
I would like to print log4j to both console and logfile, i have the following log4j.properties file:
# Root logger option
log4j.rootLogger=DEBUG,WARN,INFO,ERROR file, stdout
# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=C:\\jeff\\logfile.txt
log4j.appender.file.MaxFileSize=20MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
I use the Logger in the simple way:
final static Logger logger = Logger.getLogger(MyClass.class);
logger.warn("my message");
The logging works perfectly fine on console but not in the file, actually i believe that the cfg file isnt read at all, note that the log4j.poperties file is in the root directory of the project.
In various tutorials i have read that is necessary that log4j.properties is in the classpath, there is no need to manually register it from java code.
Any advice on how can i tell my logger to read the properties from the cfg file?
Don't try to beat me, I am running away... :-)
You missed a comma in between ERROR and file.
log4j.rootLogger=DEBUG,WARN,INFO,ERROR file, stdout
I am trying to implement log4j using netbeans ide.
My Java code is
public class MyClass {
final static Logger logger = Logger.getLogger(MyClass.class.getName());
static {
File file = new File("log4j.properties");
System.out.print(file.getAbsolutePath());
PropertyConfigurator.configure(file.getAbsolutePath()); --- line 5
}
}
Problem is that code execute successfully without any error but log file is not created. When I put netbeans in debug mode, I am getting following inside watch variable console "Unknown type "org.apache.log4j.PropertyConfigurator". at line 5 of above code. I am trying to include log4j.properties file inside my WEB-INF/classes folder but it is not get created. I am not sure what the issue is.
my log4j.properties file look like
#Root logger option
log4j.rootLogger=DEBUG, stdout
#Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Rirect log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=/home/resources/log4j.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
I am getting logs in console but no log4j.log file get created. Any idea?
i have the following log4j configuration:
# Root logger option
log4j.rootLogger=file, stdout
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.Threshold=WARN
log4j.appender.file.File=logs/log.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.Append=true
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Threshold=INFO
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
Logging into stdout works fine but nothing is logged into my file.
There are definately outputs for the file but nothing happens.
Why isnt he logging into my file?
you can change your configuration file like this.
# Root logger option
log4j.rootLogger= ALL,file, stdout
And log4j.appender.stdout.Threshold=INFO change level like ALL its print all level logs TRACE to FATAL
One reason could be that the Threshold for the stdout appender(INFO) is lower than the file appender(WARN). So, if there are only INFO messages being logged, you will only see them in the stdout and not in the file.
It depends on how you are running it. Is this just a normal java program? For example, if you are trying to run it within a container (such as Karaf) then sometimes they can have special log destinations set.
This is my log4j.properties.
# Root logger option
log4j.rootLogger=INFO, file, stdout
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=${catalina.home}\MyLog\PmcDemo.log
log4j.appender.file.MaxFileSize=1MB
log4j.appender.file.MaxBackupIndex=1
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
I am using tomcat 6.0, in my application I have used Logger from log4j yet I don't see any output on server console or in the log file. My application is using struts2 as front end, Spring framework as middle layer and hibernate as the end layer. I don't see my application logging how can I enable it in tomcat 6?
You need to switch the backslashes for forward slashes:
${catalina.home}/MyLog/PmcDemo.log
or to escape them
${catalina.home}\\MyLog\\PmcDemo.log
If that doesn't help, let us know the structure of your project and where the log4j.properties file is stored.
Try this steps,
If running Tomcat 6.x:
1. If you have not already done so, modify the <<TOMCAT_HOME>>/conf/catalina.properties file so that the shared classloader mechanism work the same as Tomcat 5.x.
2. To do this, verify that the entry beginning with shared.loader= reads shared.loader=${catalina.base}/shared/classes,${catalina.base}/shared/lib/*.jar If running Tomcat 5.x or higher:
If running Tomcat 5.x or higher:
3. If it does not already exist, create a "shared/classes" directory under <<TOMCAT_HOME>>.
4. If it does not already exist, create a "shared/lib" directory under <<TOMCAT_HOME>>.
5. Copy log4j-###.jar into <<TOMCAT_HOME>>/shared/lib.
**Note:** Any specific version of log4j-###.jar should work. You can download the stable log4j version 1.2 installation from http://logging.apache.org/log4j/1.2/download.html
6. Copy a log4j.properties file into <<TOMCAT>>/shared/classes.
Example
To get a log file named "initiate.log" to show up in the <<TOMCAT_HOME>>/logs directory, an initial version of log4j.properties file is:
log4j.rootLogger=ERROR, R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${catalina.home}/logs/initiate.log
log4j.appender.R.MaxFileSize=1000KB
log4j.appender.R.MaxBackupIndex=5
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d{ABSOLUTE} 5-5p %c{2} - %m %n
log4j.logger.org.springframework=ERROR
log4j.logger.org.springframework.web.servlet.mvc=ERROR
#set to DEBUG to see hibernate and connection-pool logging output
log4j.logger.org.hibernate=ERROR
log4j.logger.org.apache.commons.dbcp=ERROR
#set to DEBUG to see Initiate-specific logging output
log4j.logger.com.initiatesystems=DEBUG
#set to DEBUG to set Initiate-specific verbose logging output
log4j.logger.verbose=ERROR
Quoted from: http://pic.dhe.ibm.com/infocenter/initiate/v9r5/index.jsp?topic=%2Fcom.ibm.datatrust.doc%2Ftopics%2Ft_datatrust_configuring_log4j_logging_apachetomcat.html