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Spring Boot Logback

Logback is a logging framework wheter console or file, is nowadays the best option for logging your Spring Boot application. Here you can find more information about it. This time I will show you how to configure Logback.

First you need to add logback dependencies into your build.gradle file.

compile "ch.qos.logback:logback-classic:1.2.1"
compile "ch.qos.logback:logback-core:1.2.1"

Then under ${PROJECT_HOME}/src/main/resources create this logback.groovy file:

import ch.qos.logback.core.ConsoleAppender
import ch.qos.logback.core.rolling.RollingFileAppender
import ch.qos.logback.classic.encoder.PatternLayoutEncoder

import static ch.qos.logback.classic.Level.DEBUG
import static ch.qos.logback.classic.Level.INFO

appender("STDOUT", ConsoleAppender) {
  encoder(PatternLayoutEncoder) {
    pattern = "%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{5} Groovy - %msg%n"
  }
}

logger("com.jos.dem.vetlog", INFO)
logger('org.springframework', WARN)
root(WARN, ["STDOUT"])

Logback will give preference to groovy configuration over xml configuration.

If you want to send your loggin to a file, use this Groovy structure:

import ch.qos.logback.core.ConsoleAppender
import ch.qos.logback.core.rolling.RollingFileAppender
import ch.qos.logback.classic.encoder.PatternLayoutEncoder

import static ch.qos.logback.classic.Level.DEBUG
import static ch.qos.logback.classic.Level.INFO

appender("ROLLING", RollingFileAppender) {
  encoder(PatternLayoutEncoder) {
    pattern = "%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{5} Groovy - %msg%n"
  }
  rollingPolicy(TimeBasedRollingPolicy){
    FileNamePattern = "vetlog-spring-boot-%d{yyyy-MM}.log"
  }
}

logger("com.jos.dem.vetlog", INFO)
logger('org.springframework', WARN)
root(WARN, ["ROLLING"])

That’s it, when you run your project logback will send logging to console or file.

To download the project:

git clone https://github.com/josdem/vetlog-spring-boot.git
git fetch
git checkout feature/27

To run the project, please read the wiki and execute this command:

gradle bootRun -Dspring.config.location=$HOME/.vetlog-spring-boot/application-development.yml

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