------------------------ Logger | ------------------------ * jdk¼¶±ðµÄlogger * ¹ØϵͼÆ×(¸úpython²î²»¶à) logger ÈÕÖ¾¼Ç¼Æ÷ |-handler ´¦ÀíÆ÷ |formatter ¸ñʽ»¯Æ÷ |filter ¹ýÂËÆ÷ * Éæ¼°×é¼þ Logger * ÈÕÖ¾¼Ç¼Æ÷ LogRecord * Ò»¸öÈÕÖ¾¶ÔÏó,°üº¬ÁËÏûÏ¢,ʱ¼ä´Á,Àà.µÈµÈÈÕÖ¾µÄÐÅÏ¢ Filter * ÈÕÖ¾¹ýÂËÆ÷,¿ØÖÆÄÄЩÈÕÖ¾ÒªÊä³ö Formatter * ÈÕÖ¾¸ñʽ»¯,Êä³ö×Ô¼ºÏëÒªµÄÈÕÖ¾ÐÅÏ¢ Handler * ÈÕÖ¾¿ØÖÆÆ÷,ÓÃÓÚ¿ØÖÆÈÕÖ¾µÄÊä³ö ------------------------ Logger-¾²Ì¬·½·¨/ÊôÐÔ | ------------------------ GLOBAL_LOGGER_NAME = "global" Logger getGlobal() * »ñÈ¡È«¾ÖµÄÒ»¸öÈÕÖ¾¼Ç¼Æ÷¶ÔÏó Logger getAnonymousLogger() Logger getAnonymousLogger(String resourceBundleName) Logger getLogger(String name) * »ñÈ¡Ö¸¶¨Ãû³ÆµÄÈÕÖ¾¼Ç¼Æ÷ Logger getLogger(String name, String resourceBundleName) * »ñÈ¡Ö¸¶¨Ãû³ÆµÄÈÕÖ¾¼Ç¼Æ÷,²¢ÇÒÖ¸¶¨×ÊÔ´°ü(¹ú¼Ê»¯)µÄÃû³Æ ------------------------ Logger-ʵÀý·½·¨/ÊôÐÔ | ------------------------ void setLevel(Level newLevel) * ÉèÖÃÈռǼ¶±ð,²ÎÊý¾ÍÊÇ Level ʵÀý * °üº¬Ò»ÏÂÈÕÖ¾¼¶±ð Level.SEVERE; Level.WARNING; Level.INFO; Level.CONFIG; Level.FINE; Level.FINER; Level.FINEST; Level.ALL; Level.OFF; * Ò²¿ÉÒÔʹÓà Level µÄ¾²Ì¬ parse(String name) apiÀ´»ñÈ¡Ö¸¶¨Ãû³ÆµÄÈÕÖ¾¼¶±ðʵÀý void fine(""); void finer(""); void finest(""); void config(""); void info(""); void severe(""); void warning(""); * ÒÔÉÏapi±íʾ²»Í¬¼¶±ðµÄÈÕÖ¾Êä³ö void log(Level level, String msg) * ÒÔÖ¸¶¨µÄÈÕÖ¾¼¶±ðÊä³öÈÕÖ¾ void log(LogRecord record) * ÒÔÈÕÖ¾¼Ç¼Æ÷¶ÔÏóµÄÐÎʽ¼Ç¼һ¸öÈÕÖ¾ * LogRecord ÊôÐÔ/·½·¨ record.getLevel(); //»ñÈ¡ÈÕÖ¾¼¶±ð record.getMessage(); //»ñÈ¡ÈÕÖ¾ÕýÎÄ record.getMillis(); //»ñȡʱ¼ä´Á record.getClass(); record.getSequenceNumber(); //»ñÈ¡ÈÕÖ¾µÄΨһÐòÁкŠrecord.getParameters(); record.getLoggerName(); record.getSourceClassName(); throwing(String sourceClass, String sourceMethod, Throwable thrown) * Ò»°ãÓÃÓÚÔÚ catch ÄÚ²¿,·¢ÉúÒì³£µÄʱºò½øÐÐÈÕÖ¾¼Ç¼ void setUseParentHandlers(boolean useParentHandlers) * ÊÇ·ñʹÓø¸¼¶loggerµÄhanlder´¦ÀíÆ÷ void addHandler(Handler handler) * Ìí¼ÓÒ»¸öhanlderµ½logger * handler ĬÈÏÌí¼ÓÒ»¸ö ConsoleHandler ,Ò²¾ÍÊýÒÔ System.err µÄÐÎʽÊä³öµ½ÆÁÄ» * ¿ÉÒÔͨ¹ýÀ©Õ¹ Handler/StreamHandler ÀàÀ´×Ô¶¨Òå´¦ÀíÆ÷ * ϵͳԤ¶¨ÒåµÄhandler FileHandler * new FileHandler("c:\\log.xml") * ±£´æÈÕÖ¾µ½Ö¸¶¨ÎļþµÄhandler,ÒÔxmlÐÎʽ±£´æ * FileHandler ʵÀýµÄ·½·¨/ÊôÐÔ void setEncoding(String encoding) * ÉèÖÃ×Ö·û¼¯ void setFormatter(Formatter newFormatter) * ÉèÖÃÒ»¸öÈÕÖ¾¸ñʽ»¯formatter,À´Éú³É²»¸ñʽµÄÈÕÖ¾ * Ò²¿ÉÒÔ×Ô¼ºÀ©Õ¹ Formatter Àà * Formatter Ö»ÓÃʵÏÖÒ»¸ö·½·¨,°ÑÒ»¸öÈÕÖ¾¼Ç¼¶ÔÏó,ת»»Îª String @Override public String format(LogRecord record) { return null; } void publish(LogRecord record) * Ìí¼ÓÒ»¸öÈÕÖ¾¼Ç¼¶ÔÏó void setFilter(Filter newFilter) * ÉèÖÃÒ»¸ö¹ýÂËÆ÷ * Filter ÊÇÒ»¸ö½Ó¿Ú,Ö»ÓÐÒ»¸ö³éÏó·½·¨,ÓÃÓÚÅжÏÊÇ·ñÒª¼Ç¼ÈÕÖ¾ public boolean isLoggable(LogRecord record);