I want my application has its own logging configuration. I want to separate my logs from the server.log file. i am using jboss 7 and log4j. And please tell me how i configure my jboss 7 with my log4j and using struts2 framwork.
Read up about Log4J appenders. The general idea is you'd have an appender that would capture all logging under a specific package, preventing it from being outputted into server.log
Here is a reasonable answer that would help - log4j: Log output of a specific class to a specific appender
Related
I'm used to using log4j and whenever there were setup/config problems I'd enable "-Dlog4j.debug" and all the config info would be dumped out at startup.
This was very useful on a number of occasions.
Now I'm working on a Spring boot application, which I've found uses:
Commons logging Logger statements in the client code
A bridge jar (jcl-over-slf4j-xxx.jar) which translates the commons logging calls into slf4j more info here
Finally slf4j uses "logback" as the underlying logging framework
I found it rather painful to figure all this out.
Is there an equivalent of -Dlog4j.debug which can show me how this is all hanging together at startup time?
This is the best/only option I've found so far, and it's logback specific.
Use this -D on the command line:
-Dlogback.statusListenerClass=ch.qos.logback.core.status.OnConsoleStatusListener
Taken from here
This essentially is the logback equivalent of log4j's -Dlog4j.debug.
It dumps the logback startup sequence to the console at startup time, as the logging system is initialised.
This is not a true answer as I'd like some messages to show before this to show why logback is being used, but I haven't found anything like that yet.
Aside: This may also be useful for Spring Boot:
-Ddebug
Taken from here and here
If you are using logback, I assume you are using the logback.xml file? Then if you start that file with <configuration debug="true"> then it should dump the status information. More information in the documentation under status data section.
I have 4 appllications (ear) on my WAS. I need them to write in SystemOut.log some sign. I.e each application must write to log file its own sign. For example:
[16.01.17 3:50:05:592 GMT+05:00] ADMIN 000005e0 SubsystemMess I com.docflow.core.integration.jms.SubsystemMessageListener onMessage_aroundBody0 Subsystem integration message ID:f5392a5ec3b3f41502095b00110a134f0000000000000001 of type DP_EKS_BANK_GUARANTEE_RECEIVED process finished
Here ADMIN is sign of the application.
How i can do that?
It's not possible to adjust the default logging format in this way. Your options would be to use java.util.logging.Logger with a particular name (to replace the "SubsystemMess" part) or to use a separate logging package and configure it to log to a separate file.
Look at log4j and configuring each app's log4j to go to a different file.
Log4j's file appender can be configured to also include timestamp and more.
The only catch is you can't configure it from WAS's admin console then.
Note that java.util.Logger writes to the trace.log. If you use a different logger name, it will list as such in the same trace.log file. Upside is you can now configure it from the admin console.
One potential solution could be to switch to HPEL logging. Then you could query log entries for your given application using logviewer, like:
logViewer.sh -includeExtensions appName=PlantsByWebSphere
I know that it is not exactly what you are looking for, but maybe it will be sufficient for your needs.
I've a problem with OpenJPA logging and Websphere (8).
For a few days I try to redirect the OpenJPA logging information into a separate file (instead of the SystemOut log file). This is what I tried:
Changing the persistence.xml with logging information (e.g. ). Though I learned that websphere is ignoring this entry. Can I assume that this is correct?
http://pic.dhe.ibm.com/infocenter/wasinfo/v8r0/topic/com.ibm.websphere.express.doc/info/exp/ae/tejb_loggingwjpa.html tells me the same
Also the wsjpa.log property did not help.
Specifying a handler for openjpa (or openjpa.Runtime, ...) in JSR-47 configuration file does not work either (other configurations worked). What I realized here is that there is actually no openjpa logger in the java logging (java.util.logging.LogManager.getLogManager().getLoggerNames()). Does that mean that OpenJPA is not logging to a dedicated logger but just writes to SystemOut which is then processed by websphere?
I searched through all the different loggers and traces in the websphere console and tried a few, but none of them contained any openjpa logs. Can I assume that there is no other location where openjpa logs to in websphere?
To conclude: It's not working and I cannot use a handler for the openjpa logs because there are no logs generated. OpenJPA in websphere is just printing to the SystemOut which is internally used for the tracing. Does anyone have an idea what to do?
Alternatives would be:
- Use HPEL
- Script to filter the trace.log
But actually I would rather have a file handler for OpenJPA in Websphere.
Thanks for your help and I can supply you with some more information if you need that.
You can use application logging system for this purpose based on 3d party logging library for example logback.
logback is very powerful library.
Actually I am monitoring more than one Tomcat log files using Taillistener API in java. Now I want to find that log messages are coming from which tomcat.
Is it possible to add log file name in the log messages.
Thanks in advance.
You can make use of log4j instead of the standard java.util.logging Tomcat uses.
That will allow you to set a log file per Tomcat instance and much more.
See Tomcat Log4J Logging.
How do I configure internal event monitoring in hsqldb? When I run my Java application, I get the following warnings:
log4j:WARN No appenders could be found for logger (HSQLDB2C7984E18B.org.hsqldb.persist.Logger).
log4j:WARN Please initialize the log4j system properly.
The documentation tells me log4j is not the only option, but it doesn't tell me how to configure my application. Can anyone point me to this documentation? Remember, I don't want to use log4j for hsqldb.
It bears mentioning that a 3rd-party jar I'm referencing requires log4j. Does hsqldb automatically detect that log4j is present and then attempt to use it? Or am I missing something fundamental about how logging works?
Check out this link. It says
The logging facility hands off to Log4j if Log4j is found in the classpath, and otherwise will hand off to java.util.logging.
The consequence of what the message indicates is that no logging for HSQLDB will take place because no appenders were found.
If you wish to suppress the message, add a line like the one below to the log4j.properties file:
log4j.logger.HSQLDB2C7984E18B.org.hsqldb.persist.Logger=FATAL
This will log only FATAL events, which wouldn't happen in normal operation.
You also state that you don't want to use log4j for HSQLDB. Software components that can use log4j leave the logging configuration (including level and where to log, etc.) to the log4j properties settings, which you can edit and configure.
In this case, the logger name is based on the "unique" database name which is initially autogenerated, but which you can change in HSQLDB.
Because as YWE noted hsqldb uses log4j by default if it is found in the classpath, I needed to figure out how to override the log4j.properties found in the 3rd-party library. This I managed to do as follows:
Copy the existing log4j.properties to my project, and add the following line at the beginning:
log4j.rootLogger=WARN, CONSOLE
Add the following VM Arguments:
-Dlog4j.log4j.defaultInitOverride=true
-Dlog4j.configuration=C:/full/path/to/my/log4j.properties
Make sure this line of code runs before anyone (e.g. hsqldb) attempts to use log4j:
org.apache.log4j.PropertyConfigurator.configure("log4j.properties");