I use logback.groovy to configure my logback but you can do it with xml config as well:
import static ch.qos.logback.classic.Level.*
import static ch.qos.logback.core.spi.FilterReply.DENY
import static ch.qos.logback.core.spi.FilterReply.NEUTRAL
import ch.qos.logback.classic.boolex.GEventEvaluator
import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import ch.qos.logback.core.ConsoleAppender
import ch.qos.logback.core.filter.EvaluatorFilter
def patternExpression = "%date{ISO8601} [%5level] %msg%n"
appender("STDERR", ConsoleAppender) {
filter(EvaluatorFilter) {
evaluator(GEventEvaluator) {
expression = 'e.level.toInt() >= WARN.toInt()'
}
onMatch = NEUTRAL
onMismatch = DENY
}
encoder(PatternLayoutEncoder) {
pattern = patternExpression
}
target = "System.err"
}
appender("STDOUT", ConsoleAppender) {
filter(EvaluatorFilter) {
evaluator(GEventEvaluator) {
expression = 'e.level.toInt() < WARN.toInt()'
}
onMismatch = DENY
onMatch = NEUTRAL
}
encoder(PatternLayoutEncoder) {
pattern = patternExpression
}
target = "System.out"
}
logger("org.hibernate.type", WARN)
logger("org.hibernate", WARN)
logger("org.springframework", WARN)
root(INFO,["STDERR","STDOUT"])
I think to use GEventEvaluator is simplier because there is no need to create filter classes.
I apologize for my English!