gwt-log-3.3.2 does not support log4j-2.1

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What version of GWT are you using? 1.4.60? 2.0.4? Other?
GWT - 2.6.0
What version of the gwt-log jar file or library file are you using?
3.3.2
What operating system(s) are you using? Windows? Linux? Mac?
Windows
Does the issue occur in web mode, development mode (formerly "hosted
mode"), both or don't know?
both

Do you have a workaround?

The class "com.allen_sauer.gwt.log.server.ServerLogImplLog4J" uses log4j 
classes (like Logger, Level and MDC) from package "org.apache.log4j". In 
log4j-2.1 the package naming changed to "org.apache.logging.log4j", the 
"org.apache.log4j.MDC"-class has been replaced (or better merged with the 
"NDC"-class same package) by "org.apache.logging.log4j.ThreadContext"-class, 
the Method "toInt()" of class "org.apache.log4j.Level" renamed to "intLevel()" 
and the Method "setLevel" of "org.apache.log4j.Logger" does no longer exist. 
Replacing usage by

LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
Configuration conf = ctx.getConfiguration();
conf.getLoggerConfig(logger.getName()).setLevel(getLevel(level));
ctx.updateLoggers(conf);

with

private Level getLevel(int level) {
      for (Level currLevel : Level.values()) {
          if (currLevel.intLevel() == level) {
              return currLevel;
          }
      }

      return Level.OFF;
  }

should do the same. Can you please fix that issue?

Greetings
Macke

Original issue reported on code.google.com by mackemar...@googlemail.com on 12 Jan 2015 at 10:00