I am creating a jar file that i need to provide to client, but my client is asking for separate logger for the jar file as this is doing some integration work.
anyone can suggest how can i create logger for only one jar file, can i put log4j.properties in same jar file.
I am using web-logic server. we will not deploy this jar file instead we will just keep it in domain lib folder.
Thanks
If the properties file is in the jar, then you could do something like this:
Properties props = new Properties();
props.load(getClass().getResourceAsStream("/log4j.properties"));
PropertyConfigurator.configure(props);
The above assumes that the log4j.properties is in the root folder of the jar file.
If this does not work for your needs in this case then you can always use:
-Dlog4j.configuration=log4j_for_some_jar.properties
If the other application is using Log4j as well. The easier method would be to just config your log4j file to send anything from your classes in your jar to a new log file like so:
log4j.rootLogger=ERROR, logfile
log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.logfile.datePattern='-'dd'.log'
log4j.appender.logfile.File=log/radius-prod.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%-6r %d{ISO8601} %-5p %40.40c %x - %m\n
log4j.logger.foo.bar.Baz=DEBUG, myappender
log4j.additivity.foo.bar.Baz=false
log4j.appender.myappender=org.apache.log4j.DailyRollingFileAppender
log4j.appender.myappender.datePattern='-'dd'.log'
log4j.appender.myappender.File=log/access-ext-dmz-prod.log
log4j.appender.myappender.layout=org.apache.log4j.PatternLayout
log4j.appender.myappender.layout.ConversionPattern=%-6r %d{ISO8601} %-5p %40.40c %x - %m\n
Related
I am using Junit as my testing technology. Along with this I am also using log4j to log from my main application.
I am encountering an issue where, when Jenkins runs my test cases it is logging the output to my applications log file which is less than ideal.
Is it possible to suppress these log messages some how? My log4j properties is as follows;
log=/var/opt/jboss/standalone/log/myapp.log
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger
log4j.rootLogger=DEBUG, FILE
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.append=true
log4j.appender.FILE.file=${log}
log4j.appender.FILE.threshold=DEBUG
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=%d %-5p %c - %m%n
You can do this by having a custom log4j.properties file that you use only for testing, have that configuration tell log4j not to produce any logging, and place the custom properties file in a location that will cause it to be used during runs of your unit tests (and only those runs), by having it in a preferred directory in your classpath used for testing. If you are using Maven and/or eclipse, you would put your custom properties file in the directory src/test/resources.
I create a Tomcat webapp project. If I put the log4j.xx.jar & log4j.properties in the Tomcat lib, I get the log file. If I put the log4j.properties in the WEB-INF/classes, I doesn't get the log file. I try again and again. When I put the log4j.xx.jar in the WEB-INF/lib and put the log4j.properties in the WEB-INF/classes, I get it again. Why? What's the logic?
log4j.rootLogger=INFO,A1, A2
#org.apache.log4j.ConsoleAppender
log4j.appender.A1=org.apache.log4j.FileAppender
log4j.appender.A1.File=D:\\Tomcat2\\logs\\monitor.log
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
log4j.appender.A2=org.apache.log4j.ConsoleAppender
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
Both log4j.xx.jar and log4j.properties files have to be loaded by the same classloader. Tomcat lib files are loaded by a different classloader than WEB-INF/lib files. So you have to put both files under Tomcat lib or both files under WEB-INF/lib to make it work.
Put the log4j jar file in WEB-INF/lib
Put log4j.properties anywhere you like eg tomcat/conf . Make sure it is in classpath.
And then read the log4j.properties using the classloader.
YourClass.class.getClassLoader().getResourceAsStream("relative path");
I don't like the idea of putting things to tomcat/lib folders.
Firstly because different apps on tomcat may use different version of log4j.jar. And putting in tomcat/lib will cause a version conflit for some of the applications.
Secondly its not right to put a configuration file in the lib directory. Its right place is the conf folder.
I have issue in executing the logs. I have two projects: one is a servlet and the other one is a simple java file. private static Logger logger=Logger.getLogger(myServiceServlet.class); This was working fine. Its writing log wen i start running the Tomcat server. But the same thing is not achieve in my simple java file, it converted into WS and try to deploy in axis/Tomcat server
Servlet is directly running in Tomcat server.
But java file is converted into Webservice.aar inside the Axis2--->Tomcat server.
Log Properites
# Log levels
log4j.rootLogger=INFO,CONSOLE,R
# Appender Configuration
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
# Pattern to output the caller's file name and line number
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
# Rolling File Appender
log4j.appender.R=org.apache.log4j.RollingFileAppender
# Path and file name to store the log file
log4j.appender.R.File=C:/res backup/apache-tomcat-6.0.35/webapps/mylog/logs/servicelog.log
log4j.appender.R.MaxFileSize=2048KB
# Number of backup files
log4j.appender.R.MaxBackupIndex=50
# Layout for Rolling File Appender
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%d - %c - %p - %m%n`
The .aar files are not running in the same context as the JARs in WEB-INF/lib.
They share some kind of context as you can load references to the WEB-INF/lib classes, however its not 100% consistent at this point.
I would recommend you build some kind of wrapper in your .aar files that do nothing else then forwarding the calls into methods of JAR files that are situated in WEB-INF/lib.
You just need to make sure you load the reference from the .aar to the methods in WEB-INF/lib context correctly.
To throw errors in the .aar classes I would recommend you catch them and then throw an "AxisFault".
throw new AxisFault(err.getMessage());
http://axis.apache.org/axis2/java/core/api/org/apache/axis2/AxisFault.html
That way we have have been able to solve almost all our issue with the context of .aar files.
Sebastian
I have a log4j.properties file like this on my src package:
log4j.rootLogger=DEBUG, CA, EVA
#Console Appender
log4j.appender.CA=org.apache.log4j.ConsoleAppender
log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
#Event Viewer Appender
log4j.appender.EVA=org.apache.log4j.nt.NTEventLogAppender
log4j.appender.EVA.layout=org.apache.log4j.PatternLayout
log4j.appender.EVA.source=MySource
log4j.appender.EVA.layout.ConversionPattern=[%c][%l][%p][%thread]: %m%n
I create the logger on a interface (LogInterface.java) like this:
package components;
import org.apache.log4j.Logger;
public interface LogInterface {
static final Logger logger = Logger.getLogger("MyLogger");
}
I place the NTEventLogAppender.dll under:
C:\Program Files (x86)\IBM\WID7_WTE\runtimes\bi_v7\java\jre\bin
Sometimes I am getting the following error when there is an exception to log:
NTEventLogAppender (Library is already loaded in another ClassLoader)
How can I solve this issue?
Thanks
The solution for this problem was to place the log4j JAR file under:
Application_Server_Install_Path\lib
On the project I added the log4j JAR file to the project's build path as a variable (add variable option)
This solves the JAR reference on the IDE the only thing left to do is to add the previous log4j JAR file reference on the Websphere Application Server's runtime.
To do this I accessed the WAS administration console and added the previous log4j JAR file path under:
Environment -> Shared Libraries
Despite no one seems to have this same problem, here's the solution for future similar problems
Thanks
I have to deploy a web app and the the log4j.properties file is created by the client so I dont have control over it.
Their properties file is like this:
log4j.rootCategory= FILE
!-----------FILE--------------!
log4j.category.FILE=DEBUG
log4j.appender.FILE=org.apache.log4j.RollingFileAppender
log4j.appender.FILE.File=${catalina.base}/logs/rcweb.log
log4j.appender.FILE.MaxFileSize=1024KB
log4j.appender.FILE.MaxBackupIndex=10
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=%-2d{dd/MM/yyyy HH:mm:ss} [%t] %5p %c:%L - %m%n
And in my classes I do something like this:
private static final Logger LOG = Logger.getLogger(MaterialController.class);
LOG.info("my log");
But the log file has never been created.
I did the test and changed the log4j.properties file and deployed it in my computer adding the following line:
log4j.logger.br.com.golive.requisicaoCompras=DEBUG
This works, but I can't use the file like this.
Are there any ideas?
Problem solved. My client's log4j.properties file was wrong, the first line should be:
log4j.rootCategory=DEBUG, FILE