Ravi Singh

Dear friends

Need help with logging logs into database using JDK 1.1.8. Please read through my .java and properties file attached below. Also please note this application works well with JDK 1.5.

I get runtime error while parsing the properties file (just before commencing parsing for database appender part), saying "Can't find class TestJDBCLogging"

I've also tried setting classpath to C:\log4j\HelloWorld inside System Environment Variables...but no luck. Moreover I've tried using various versions of log4j jars starting from ver. 1.2.1 to 1.2.7 but still same situation...however, using ver 1.2.7 onwards gives compile-time errors on JDK 1.1.8.


######### log4j.properties file ############ #### Use three appenders - log to console, log to a file and log to the database log4j.rootCategory=debug, stdout, Roll, CRSDBAPPENDER log4j.debug=true # Print only messages of priority WARN or higher for your category # log4j.category.your.category.name=WARN # Specifically inherit the priority level # log4j.category.your.category.name=INHERITED #### stdout - First appender writes to console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%x %d{HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n #### Roll - Second appender writes to a file log4j.appender.Roll=org.apache.log4j.RollingFileAppender ##log4j.appender.Roll.File=${InstanceName}.log log4j.appender.Roll.File=HelloWorld.log log4j.appender.Roll.MaxFileSize=20KB log4j.appender.Roll.MaxBackupIndex=10 log4j.appender.Roll.layout=org.apache.log4j.PatternLayout log4j.appender.Roll.layout.ConversionPattern=%x %d{yyyy.MM.dd HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n #### CRSDBAPPENDER - third appender writes to the database log4j.appender.CRSDBAPPENDER=org.apache.log4j.jdbc.JDBCAppender log4j.appender.CRSDBAPPENDER.Driver=com.microsoft.jdbc.sqlserver.SQLServerDriver log4j.appender.CRSDBAPPENDER.URL=jdbc:sqlserver://arncorp15:1433;DatabaseName=LOG log4j.appender.CRSDBAPPENDER.user=sa log4j.appender.CRSDBAPPENDER.Password=p8ss3doff log4j.appender.CRSDBAPPENDER.layout=org.apache.log4j.PatternLayout log4j.appender.CRSDBAPPENDER.sql=INSERT INTO LOG (computername, crsservername, logtime, loglevel, threadname, filename, linenumber, logtext) VALUES ('Testserver', 'ARNCORP15', '%d', '%p', '%t', '%F', '%L', '%m')

######### TestJDBCLogging.java for JDK 1.1.8 ############## import org.apache.log4j.*; public class TestJDBCLogging { // Initialize a logging category. Here, we get THE ROOT CATEGORY static Category cat = Category.getInstance(TestJDBCLogging.class.getName()); // static Logger log = Logger.getLogger(TestJDBCLogging.class.getName()); public static void main(String[] args) { try{ // Now, try a few logging methods MDC.put("myComputerName", "Testcomp"); MDC.put("crsServerName", "ARNDEV01"); cat.debug("Start of main()"); cat.info("Testing log message with special characters \" with priority set to INFO"); cat.warn("Testing log message with special characters \\with priority set to WARN"); cat.error("Testing log message with special characters ; with priority set to ERROR"); cat.fatal("Testing log message with special characters / with priority set to FATAL"); } catch(Exception e){ e.printStackTrace(); } } }

Directory structure ->

Location of .java, .class and properties file -
C:\log4j\HelloWorld

Location of library jar files (log4j-1.2.7 and jdbc driver etc) -
C:\log4j\HelloWorld\lib

Looking forward to your replies...

Ravi Singh

I've got my program working now. I was using the wrong version of log4j library in my build path. Thanks for your pointer, Ulf...

Cheers!
Ravi Singh

Yes the program works fine if I remove (or comment) the database appender settings in properties file.

Hi,

I need help with log4j logging tool (org.apache.log4j.*) to log into database using JDBCAppender. Have look at my logger code and corresponding log4j.properties file stated below. I'm running this program using Eclipse IDE and it's giving me the following error (in bold) at the end:

log4j: Parsing for [root] with value=[debug, stdout, Roll, CRSDBAPPENDER].
log4j: Level token is [debug].
log4j: Category root set to DEBUG
log4j: Parsing appender named "stdout".
log4j: Parsing layout options for "stdout".
log4j: Setting property [conversionPattern] to [%x %d{HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n].
log4j: End of parsing for "stdout".
log4j: Parsed "stdout" options.
log4j: Parsing appender named "Roll".
log4j: Parsing layout options for "Roll".
log4j: Setting property [conversionPattern] to [%x %d{yyyy.MM.dd HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n].
log4j: End of parsing for "Roll".
log4j: Setting property [file] to [HelloWorld.log].
log4j: Setting property [maxBackupIndex] to [10].
log4j: Setting property [maxFileSize] to [20KB].
log4j: setFile called: HelloWorld.log, true
log4j: setFile ended
log4j: Parsed "Roll" options.
log4j: Parsing appender named "CRSDBAPPENDER".

Can't find class HelloWorld

import org.apache.log4j.*; public class HelloWorld { static Logger log = Logger.getLogger(HelloWorld.class.getName()); public static void main(String[] args) { try{ // Now, try a few logging methods MDC.put("myComputerName", "Ravinder"); MDC.put("crsServerName", "ARNDEV01"); log.debug("Start of main()"); log.info("Just testing a log message with priority set to INFO"); log.warn("Just testing a log message with priority set to WARN"); log.error("Just testing a log message with priority set to ERROR"); log.fatal("Just testing a log message with priority set to FATAL"); } catch(Exception e){ e.printStackTrace(); } } }


log4j.properties file #### Use three appenders - log to console, file and database log4j.rootCategory=debug, stdout, Roll, CRSDBAPPENDER log4j.debug=true # Print only messages of priority WARN or higher for your category # log4j.category.your.category.name=WARN # Specifically inherit the priority level # log4j.category.your.category.name=INHERITED #### stdout - First appender writes to console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%x %d{HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n #### Roll - Second appender writes to a file log4j.appender.Roll=org.apache.log4j.RollingFileAppender ##log4j.appender.Roll.File=${InstanceName}.log log4j.appender.Roll.File=HelloWorld.log log4j.appender.Roll.MaxFileSize=20KB log4j.appender.Roll.MaxBackupIndex=10 log4j.appender.Roll.layout=org.apache.log4j.PatternLayout log4j.appender.Roll.layout.ConversionPattern=%x %d{yyyy.MM.dd HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n #### CRSDBAPPENDER - third appender writes to the database log4j.appender.CRSDBAPPENDER=org.apache.log4j.jdbc.JDBCAppender log4j.appender.CRSDBAPPENDER.Driver=net.sourceforge.jtds.jdbc.Driver log4j.appender.CRSDBAPPENDER.URL=jdbc:jtds:sqlserver:/arncorp15:1433;DatabaseName=LOG log4j.appender.CRSDBAPPENDER.USER=sa log4j.appender.CRSDBAPPENDER.PASSWORD=p8ss3doff log4j.appender.CRSDBAPPENDER.layout=org.apache.log4j.PatternLayout log4j.appender.CRSDBAPPENDER.sql=INSERT INTO LOG (computername, crsservername, logtime, loglevel, threadname, filename, linenumber, logtext) VALUES ('%X{myComputerName}', '%X{crsServerName}', '%d{dd MMM yyyy HH:mm:ss,SSS}', '%p', '%t', '%F', '%L', '%m') end of log4j.properties file


Here is the directory structure of my program. My log4j.properties file and HelloWorld.class file are residing in folder HelloWorld\bin.

HelloWorld\bin
HelloWorld\lib
HelloWorld\src

Please note - The same program works fine for console and file appender when I comment the database appender part in my properties file.
Thanks
Ravinder
[ September 17, 2007: Message edited by: Ulf Dittmer ]