import org.apache.log4j.EnhancedPatternLayout; //导入依赖的package包/类
private static void initLog4J() {
  ConsoleAppender console = new ConsoleAppender();
  console.setLayout(new EnhancedPatternLayout("%d %-5p [%t] %c.%M - %m%n %throwable{short}"));
  console.setThreshold(Level.DEBUG);
  console.activateOptions();
  Logger.getRootLogger().addAppender(console);
}
 

import org.apache.log4j.EnhancedPatternLayout; //导入依赖的package包/类
public Set<? extends Appender> createNewAppender(final String appenderName,
                                                 final String logFolderFullPath,
                                                 final String shortFileName) {

  final String fullFileName = FilenameUtils.concat(logFolderFullPath, shortFileName);
  final String fileNamePattern = String.format("%s.%s", fullFileName, suffixPattern);

  final RollingFileAppender rollingFileAppender = new RollingFileAppender();
  rollingFileAppender.setName(appenderName);
  rollingFileAppender.setImmediateFlush(immediateFlush);

  Runtime.getRuntime().addShutdownHook(new Thread(LogManager::shutdown));

  rollingFileAppender.setLayout(new EnhancedPatternLayout(layout));

  final TimeBasedRollingPolicy timeBasedRollingPolicy = getTimeBasedRollingPolicy(fileNamePattern);
  rollingFileAppender.setRollingPolicy(timeBasedRollingPolicy);

  rollingFileAppender.activateOptions();

  return Collections.singleton(rollingFileAppender);
}