By setting the system property 'logback.configurationFile', we can customize the location of logback configuraiton file.
Example
java -Dlogback.configurationFile=/path/to/config.xml {ApplicaitonClass}
(OR)
System.setProperty("logback.configurationFile", "/Users/Shared/logback/logback.xml");
Find the below working application.
Step 1: Create new maven project ‘logback-customize-logback-file-location’.
Step 2: Update pom.xml with maven dependencies.
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sample.app</groupId>
<artifactId>logback-customize-logback-file-location</artifactId>
<version>1</version>
<dependencies>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.10</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.10</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.36</version>
</dependency>
</dependencies>
</project>
Step 3: Create logback.xml file under /Users/Shared/logback/ folder.
logback.xml
<configuration>
<statusListener
class="ch.qos.logback.core.status.OnConsoleStatusListener" />
<appender name="STDOUT"
class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<root level="warn">
<appender-ref ref="STDOUT" />
</root>
</configuration>
Step 4: Define HelloWorld application.
HelloWorld.java
package com.sample.app;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class HelloWorld {
public static void main(String[] args) {
System.setProperty("logback.configurationFile", "/Users/Shared/logback/logback.xml");
Logger logger = LoggerFactory.getLogger(HelloWorld.class);
logger.trace("Trace message");
logger.debug("Debug message");
logger.info("Info message");
logger.warn("Warning message");
logger.error("Error message");
}
}
Total project structure looks like below.
Run HelloWorld.java, you will see below messages in console.
14:00:37,878 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [/Users/Shared/logback/logback.xml] at [file:/Users/Shared/logback/logback.xml] 14:00:37,963 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set 14:00:37,964 |-INFO in ch.qos.logback.core.joran.action.StatusListenerAction - Added status listener of type [ch.qos.logback.core.status.OnConsoleStatusListener] 14:00:38,010 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender] 14:00:38,016 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT] 14:00:38,024 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property 14:00:38,041 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to WARN 14:00:38,042 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT] 14:00:38,042 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration. 14:00:38,044 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@1df82230 - Registering current configuration as safe fallback point 14:00:38.045 [main] WARN com.sample.app.HelloWorld - Warning message 14:00:38.046 [main] ERROR com.sample.app.HelloWorld - Error message
You can download complete working application from below link.
No comments:
Post a Comment