Migrating from log4j to log4j2 - properties file configuration

log4j to log4j2 bridge
log4j2 configuration
log4j configuration file
log4j vs log4j2
log4j2 system property
domconfigurator log4j2
log4j properties
log4j2 configuration file location

I have a java application which is using log4j configured as below.

log4j.properties

log4j.rootLogger=INFO, R
log4j.appender.R = org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File = /trace.log
log4j.appender.R.Append = true
log4j.appender.R.DatePattern = '.'yyyy-MM-dd
log4j.appender.R.layout = org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern = %d{HH:mm:ss} %c{1} [%p] %m%n

I would like to migrate to log4j2 with the same configuration as above. Haven't found anything related to log4j2 properties configuration file as this support recently included.

Please can anyone help me out how would be my log4j2.properties file with the same configuration above ?

rootLogger.level = INFO
property.filename = trace.log
appenders = R, console

appender.console.type = Console
appender.console.name = STDOUT
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = %d %5p [%t] (%F:%L) - %m%n

appender.R.type = RollingFile
appender.R.name = File
appender.R.fileName = ${filename}
appender.R.filePattern = ${filename}.%d{yyyy-MM-dd}
appender.R.layout.type = PatternLayout
appender.R.layout.pattern = %d{yyyy-MM-dd HH:mm:ss} %c{1} [%p] %m%n
appender.R.policies.type = Policies
appender.R.policies.time.type = TimeBasedTriggeringPolicy
appender.R.policies.time.interval = 1

rootLogger.appenderRefs = R, console

rootLogger.appenderRef.console.ref = STDOUT
rootLogger.appenderRef.R.ref = File

Log4j – Migrating from Log4j 1.x, Although the Log4j 2 configuration syntax is different than that of Log4j 1.x, For example, using a lookup for the system property named Below are the example configurations for Log4j 1.x and their counterparts in Log4j 2. Perhaps the simplest way to convert to using Log4j 2 is to replace the log4j 1.x jar file with Log4j 2's log4j-1.2-api.jar. However, to use this successfully applications must meet the following requirements: They must not access methods and classes internal to the Log4j 1.x implementation such as Appenders, LoggerRepository or Category's

You can use this to convert from Log4J.properties (v1.2) to log4j2.xml as below:

1) Convert from v1.2 properties to v1.2XML using this converter: https://log4j-props2xml.appspot.com/

2) Convert from v1.2 XML to v2.0 XML (i.e. Log4j2.xml) using the procedure provided on this link: https://logging.apache.org/log4j/2.x/manual/migration.html

Migrating from Log4j 1.x - Apache Log4j 2, Below are the example configurations for Log4j 1.x and their counterparts in Log4j 2. Sample 1 - Simple configuration using a Console Appender. Log4j 1.x XML  Using the Log4j 1.x bridge. Perhaps the simplest way to convert to using Log4j 2 is to replace the log4j 1.x jar file with Log4j 2's log4j-1.2-api.jar.However, to use this successfully applications must meet the following requirements:

Log4j2 supports .properties files but they have changed property syntax. You can check their manual here it covers all you need to create new configuration.

Log4j – Migrating from Log4j 1.x, Note that system property interpolation via the ${foo} syntax has been Below are the example configurations for Log4j 1.x and their counterparts in Log4j 2. Migrating from log4j to log4j2 - properties file configuration (5 answers) Closed 2 years ago . I have a java application which is using log4j configured as below. log4j.properties

I know it's an old issue but for the sake of history:

Since Log4j2 2.13.0 there is an experimental feature for Log4j 1 configuration files: http://logging.apache.org/log4j/2.x/manual/compatibility.html

Related JIRA issue: https://issues.apache.org/jira/browse/LOG4J2-63

Log4j – Configuring Log4j 2, Configuration of Log4j 2 can be accomplished in 1 of 4 ways: Through a configuration file written in XML, JSON, YAML, or properties format. Programmatically  Using the Log4j 1.x bridge. Perhaps the simplest way to convert to using Log4j 2 is to replace the log4j 1.x jar file with Log4j 2's log4j-1.2-api.jar.However, to use this successfully applications must meet the following requirements:

You can use this wonderful frontend web to convert you properties to a XML http://log4j-props2xml.appspot.com/

Resulting:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="R" class="org.apache.log4j.DailyRollingFileAppender">
        <param name="Append" value="true"/>
        <param name="DatePattern" value="'.'yyyy-MM-dd"/>
        <param name="File" value="/trace.log"/>
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{HH:mm:ss} %c{1} [%p] %m%n"/>
        </layout>
    </appender>
    <root>
        <level value="INFO"/>
        <appender-ref ref="R"/>
    </root>
</log4j:configuration>

Log4J 2 Configuration: Using the Properties File, You can configure Log4J 2 either programmatically in your application or through configuration files, such as properties, XML, JSON, and YAML  Like any other Java properties file, a log4j2.properties file is a set of key-value pairs with options to configure the various components of Log4J 2, such as loggers, appenders, and layouts.

Log4j2 properties file example, Learn to configure log4j2 appenders, levels and patterns. Apache Log4j2 is an upgrade to Log4j 1.x that provides significant improvements over its predecessor​  I am new to log4j. I'm converting an application from log4j 1.2 to log4j2. In the log4j.properties file I found follwoing configurations

Log4j2 2.x Manual, Although the Log4j 2 configuration syntax is different than that of Log4j 1.x, most, For example, using a lookup for the system property named catalina.base , in  Migration from log4j to log4j2 - configuration of properties file I have a java application which is using log4j configured as below. log4j.properties log4j.rootLogger=INFO, R log4j.appender.R = org.apache.log4j.DailyRollingFileAppender log4j.appender.R.File = /trace.log log4j.appender.R.Append = true log4j.appende

Log4J 2 Configuration: Using Properties File, In this post, I will discuss how to configure Log4J 2 using a properties configuration file. This is just one of several ways you can configure  Like any other Java properties file, a log4j2.properties file are a set of key value pairs with options to configure the various components of Log4J 2, such as loggers, appenders, and layouts. A basic log4j2.properties file starts with a name, optional properties to be used in other parts of the file, and appender declarations.

Comments
  • again this is log4j not log4j2. I need log4j2 configuration in properties file.