private static Appender buildAppender(String name, String fileName, String pattern) {
DailyRollingFileAppender appender = new DailyRollingFileAppender();
appender.setName(name);
appender.setAppend(true);
appender.setEncoding("GBK");
appender.setLayout(new PatternLayout(pattern));
appender.setFile(new File(getLogPath(), fileName).getAbsolutePath());
appender.activateOptions(); // 很重要，否则原有日志内容会被清空
return appender;
}
public static Logger getLogger(String file) {
Logger log = logCache.get(file);
if (null != log) {
return log;
} else {
log = Logger.getLogger(file);
DailyRollingFileAppender appender = new DailyRollingFileAppender();
Layout layout = new PatternLayout();
appender.setFile(file);
appender.setEncoding("UTF-8");
appender.activateOptions();
appender.setDatePattern("'.'yyyy-MM-dd");
appender.setLayout(layout);
log.addAppender(appender);
logCache.put(file, log);
}
return log;
}