Java log4j

            <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-simple</artifactId>
                <version>1.7.25</version>
                <scope>test</scope>
            </dependency>

log4j.rootLogger=INFO, stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.tracer.infoLogger = INFO, stdout, A1
log4j.additivity.infoLogger = false
log4j.appender.A1 = org.apache.log4j.DailyRollingFileAppender
log4j.appender.A1.File = ${catalina.home}/logs/A-Info.log
log4j.appender.A1.DatePattern = '.'yyyy-MM-dd
log4j.appender.A1.Threshold = INFO
log4j.appender.A1.Append = true
log4j.appender.A1.layout = org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern = %d %p [%t] %c %m%n

log4j.tracer.errorLogger = ERROR, stdout, A2
log4j.additivity.errorLogger = false
log4j.appender.A2 = org.apache.log4j.DailyRollingFileAppender
log4j.appender.A2.File = ${catalina.home}/logs/A-Error.log
log4j.appender.A2.DatePattern = '.'yyyy-MM-dd
log4j.appender.A2.Threshold = ERROR
log4j.appender.A2.Append = true
log4j.appender.A2.layout = org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern = %d %p [%t] %c %m%n

log4j.tracer.Job = INFO, ERROR, stdout, A3
log4j.additivity.Job = false
log4j.appender.A3 = org.apache.log4j.DailyRollingFileAppender
log4j.appender.A3.File = ${catalina.home}/logs/A-Job.log
log4j.appender.A3.DatePattern = '.'yyyy-MM-dd
log4j.appender.A3.Threshold = INFO, ERROR
log4j.appender.A3.Append = true
log4j.appender.A3.layout = org.apache.log4j.PatternLayout
log4j.appender.A3.layout.ConversionPattern = %d %p [%t] %c %m%n

package org.rx;

import org.slf4j.LoggerFactory;

public final class Logger {
    private static final org.slf4j.Logger log1 = LoggerFactory.getLogger("infoLogger"),
            log2 = LoggerFactory.getLogger("errorLogger");
    //private static final Log log1 = LogFactory.getLog("infoLogger"), log2 = LogFactory.getLog("errorLogger");

    public static void debug(String format, Object... args) {
        String msg = args.length == 0 ? format : String.format(format, args);
        System.out.println(msg);
        log1.debug(msg);
    }

    public static void info(String format, Object... args) {
        String msg = args.length == 0 ? format : String.format(format, args);
        log1.info(msg + System.lineSeparator());
    }

    public static void error(Throwable ex, String format, Object... args) {
        String msg = args.length == 0 ? format : String.format(format, args);
        log2.error(String.format("%s%s %s", System.lineSeparator(), ex.getMessage(), msg), ex);
    }
}