import java.io.CharArrayWriter;
import org.apache.catalina.valves.AccessLogValve;

public class Log4JAccessLogValve extends AccessLogValve {
    @Override
    public void log(CharArrayWriter message) {
        log.info(message.toString());
    }
}

@Component
public class LogConfig {

    @Autowired
    private ServletContext servletContext;

    @PostConstruct
    public void setAccessLogValve() {
        ((ApplicationContextFacade)servletContext).addValve(new Log4JAccessLogValve());
    }

}