I'm trying to set up logback in a project that uses gradle as the build tool. This is the build file
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'groovy'
apply plugin: 'maven'
sourceCompatibility = 1.8
repositories {
mavenCentral()
mavenLocal()
}
dependencies {
compile gradleApi()
compile localGroovy()
compile 'org.liquibase:liquibase-core:3.0.1'
compile 'org.jdbi:jdbi:2.71'
compile 'org.postgresql:postgresql:9.4.1208.jre7'
compile 'ch.qos.logback:logback-classic:1.1.7'
testCompile group: 'junit', name: 'junit', version: '4.11'
testCompile 'org.powermock:powermock-module-junit4:1.6.1'
testCompile 'org.powermock:powermock-api-mockito:1.6.1'
}
And this is the logback.groovy file which contains the configuration for logback
import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import org.apache.log4j.FileAppender
root(DEBUG, ["CONSOLE", "FILE"])
appender("FILE", FileAppender) {
file = "testFile.log"
append = true
encoder(PatternLayoutEncoder) {
pattern = "%level %logger - %msg %n"
}
}
When I try to log something I was getting this SLF4J warning
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/usr/local/Cellar/gradle/2.12/libexec/lib/gradle-core-2.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/shishir/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.1.7/9865cf6994f9ff13fce0bf93f2054ef6c65bb462/logback-classic-1.1.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.gradle.logging.internal.slf4j.OutputEventListenerBackedLoggerContext]
To solve that I followed the answer to this stack overflow question and added this extra code to my build file
configurations.all {
resolutionStrategy.eachDependency { DependencyResolveDetails details ->
if (details.requested.name == 'logback-classic') {
details.useTarget 'org.slf4j:slf4j-api:1.7.5'
}
}
Although this solved the problem of the SLF4J warning, the logging is not working. The logging statements I added are not printed to STDOUT in the pattern specified in logback.groovy. The logs are not being added to the file either. Can someone point me in the right direction?
