import java.io.PrintStream;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;

public class SystemStreamsLogger {

    public static final String SYS_STD_OUT = "GOUT";
    public static final String SYS_STD_ERR = "GERR";
    /**
     * Stdout and stderr streams have been stored
     */
    public static final PrintStream sysOut = System.out;
    public static final PrintStream sysErr = System.err;
    /**
     * Using different logger for out and err threads
     */
    private static Logger sysOutLogger = Logger.getLogger(SYS_STD_OUT);
    private static Logger sysErrLogger = Logger.getLogger(SYS_STD_ERR);

    public static void initStreamsOutAndErrLogging() {
        bindSystemOutLogging();
        bindSystemErrLogging();
    }

    public static void bindSystemOutLogging() {
        System.setOut(new PrintStream(new LoggingOutputStream(sysOutLogger, Level.INFO), true));
    }

    public static void bindSystemErrLogging() {
        System.setErr(new PrintStream(new LoggingOutputStream(sysErrLogger, Level.ERROR), true));
    }

    public static void unbindStreamsOutAndErr() {
        System.setOut(sysOut);
        System.setErr(sysErr);
    }
}

# All outputs currently set to be a ConsoleAppender.
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d{ISO8601} %-5p [%40.40c]  %m%n
log4j.appender.Console.Threshold=INFO

###### File appender definition #######
log4j.appender.File=org.apache.log4j.net.SyslogAppender
log4j.appender.File.syslogHost=localhost
log4j.appender.File.Facility=USER
log4j.appender.File.Threshold=INFO
log4j.appender.File.layout=org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern=%d{ISO8601} %-5p [%40.40c]  %m%n

      GERR]  log4j:ERROR Failed to write [<11>2013-08-24 14:23:28,579 ERROR [services.ApplicationClassLoader]  Error while compilation of custom script
].
2013-08-24 14:23:28,580 ERROR [                                  GERR]  log4j:ERROR Failed to write [<11>2013-08-24 14:23:28,580 ERROR [                                   GERR]  log4j:ERROR Failed to write [<11>2013-08-24
...........