\u3082\u3057\u3082\u3042\u306a\u305f\u304clog4j\u3092\u4f7f\u7528\u3057\u305f\u3053\u3068\u304c\u3042\u308b\u306a\u3089\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u305f\u3081\u306e\u591a\u304f\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308b\u3053\u3068\u306b\u6c17\u4ed8\u304f\u3067\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\uff1a<\/p>\n
logger.trace(\"My Log message\");\r\nlogger.debug(\"My Log message\");\r\nlogger.info(\"My Log message\");\r\n<\/code><\/pre>\n\u5b9f\u969b\u306b\u306f\u3001\u305d\u308c\u3089\u306flog4j\u306e\u30ec\u30d9\u30eb\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002 (Jissai ni wa, sorera wa log4j no reberu ni taish\u014d shiteimasu.)<\/p>\n
\u30ed\u30b04j\u306e\u30ec\u30d9\u30eb<\/h3>\n
Log4j\u306f\u591a\u304f\u306e\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u5b8c\u5168\u306a\u4e00\u89a7\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
\n- \n
\u30c8\u30ec\u30fc\u30b9\uff1a\u30c8\u30ec\u30fc\u30b9\u30ec\u30d9\u30eb\u306f\u30c7\u30d0\u30c3\u30b0\u3088\u308a\u3082\u8a73\u7d30\u306a\u60c5\u5831\u30a4\u30d9\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u30c7\u30d0\u30c3\u30b0\uff1a\u30c7\u30d0\u30c3\u30b0\u30ec\u30d9\u30eb\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c7\u30d0\u30c3\u30b0\u306b\u6700\u3082\u5f79\u7acb\u3064\u7d30\u304b\u3044\u60c5\u5831\u30a4\u30d9\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u60c5\u5831\uff1a\u60c5\u5831\u30ec\u30d9\u30eb\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9032\u884c\u72b6\u6cc1\u3092\u8352\u3044\u30ec\u30d9\u30eb\u3067\u793a\u3059\u60c5\u5831\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u8b66\u544a\uff1a\u8b66\u544a\u30ec\u30d9\u30eb\u306f\u6f5c\u5728\u7684\u306b\u6709\u5bb3\u306a\u72b6\u6cc1\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u30a8\u30e9\u30fc\uff1a\u30a8\u30e9\u30fc\u30ec\u30d9\u30eb\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u7d99\u7d9a\u7684\u306b\u5b9f\u884c\u53ef\u80fd\u306a\u30a8\u30e9\u30fc\u30a4\u30d9\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u81f4\u547d\u7684\uff1a\u81f4\u547d\u7684\u30ec\u30d9\u30eb\u306f\u975e\u5e38\u306b\u6df1\u523b\u306a\u30a8\u30e9\u30fc\u30a4\u30d9\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u4e2d\u6b62\u3092\u60f3\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\n- \n
\u5168\u3066\uff1a\u5168\u3066\u306f\u6700\u3082\u4f4e\u3044\u30e9\u30f3\u30af\u3092\u6301\u3061\u3001\u3059\u3079\u3066\u306e\u30ed\u30b0\u8a18\u9332\u3092\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
\u30aa\u30d5\uff1a\u30aa\u30d5\u306f\u6700\u3082\u9ad8\u3044\u30e9\u30f3\u30af\u3092\u6301\u3061\u3001\u30ed\u30b0\u8a18\u9332\u3092\u7121\u52b9\u306b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/ol>\nALL\u3068OFF\u306f\u7279\u5225\u306a\u30ed\u30b0\u30ec\u30d9\u30eb\u3067\u3042\u308a\u3001\u6975\u3081\u3066\u7279\u6b8a\u306a\u72b6\u6cc1\u3067\u306e\u307f\u4f7f\u7528\u3059\u3079\u304d\u3067\u3059\u3002\u79c1\u81ea\u8eab\u306f\u3053\u308c\u3089\u3092\u4e00\u5ea6\u3082\u4f7f\u7528\u3057\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
Log4j \u30ec\u30d9\u30eb\u306e\u9806\u5e8f\/\u512a\u5148\u5ea6<\/h3>\n
\u30c8\u30ec\u30fc\u30b9\u306f\u6700\u4f4e\u306e\u512a\u5148\u5ea6\u3067\u3042\u308a\u3001\u30d5\u30a1\u30bf\u30eb\u306f\u6700\u9ad8\u306e\u512a\u5148\u5ea6\u3067\u3059\u3002\u4ee5\u4e0b\u306flog4j\u306e\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u9806\u5e8f\u3067\u3059\u3002\u30c8\u30ec\u30fc\u30b9 < \u30c7\u30d0\u30c3\u30b0 < \u30a4\u30f3\u30d5\u30a9 < \u8b66\u544a < \u30a8\u30e9\u30fc < \u30d5\u30a1\u30bf\u30eb\u3002\u30ed\u30ac\u30fc\u30ec\u30d9\u30eb\u3092\u5b9a\u7fa9\u3059\u308b\u969b\u3001\u3088\u308a\u9ad8\u3044\u512a\u5148\u5ea6\u306e\u30ed\u30b0\u3082\u51fa\u529b\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30ed\u30ac\u30fc\u30ec\u30d9\u30eb\u304c\u30a4\u30f3\u30d5\u30a9\u306e\u5834\u5408\u3001\u30c7\u30d0\u30c3\u30b0\u30ed\u30b0\u306f\u51fa\u529b\u3055\u308c\u307e\u305b\u3093\u304c\u3001\u8b66\u544a\u30ed\u30b0\u306f\u512a\u5148\u5ea6\u304c\u9ad8\u3044\u305f\u3081\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n
Log4j\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n
INFO\u3068FATAL\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u307f\u3092\u8a18\u9332\u3057\u305f\u3044\u5834\u5408\u3001WARN\u3068ERROR\u306e\u30a4\u30d9\u30f3\u30c8\u306f\u8a18\u9332\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001log4j\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002org.apache.log4j.spi.Filter\u30af\u30e9\u30b9\u3092\u62e1\u5f35\u3057\u3001\u30ab\u30b9\u30bf\u30e0\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306b\u3001\u305d\u306edecide(LoggingEvent event)\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
package com.scdev.log4j.filters;\r\n\r\nimport org.apache.log4j.Level;\r\nimport org.apache.log4j.spi.Filter;\r\nimport org.apache.log4j.spi.LoggingEvent;\r\n\r\npublic class MyLog4jFilter extends Filter {\r\n\r\n\t\/**\r\n\t * My custom filter to only log INFO and FATAL events\r\n\t *\/\r\n\t@Override\r\n\tpublic int decide(LoggingEvent event) {\r\n\t\tif(event.getLevel() == Level.INFO || event.getLevel() == Level.FATAL)\r\n\t\treturn ACCEPT;\r\n\t\telse return DENY;\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30eb\u30bf\u306f\u3001INFO\u3068FATAL\u306e\u30a4\u30d9\u30f3\u30c8\u306e\u307f\u3092\u30ed\u30b0\u306b\u8a18\u9332\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u3053\u306e\u305f\u3081\u306eXML log4j\u306e\u8a2d\u5b9a\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<!DOCTYPE log4j:configuration SYSTEM \"log4j.dtd\">\r\n\r\n<log4j:configuration xmlns:log4j=\"https:\/\/jakarta.apache.org\/log4j\/\"\r\n\tdebug=\"false\">\r\n\r\n<!-- console appender -->\r\n<appender name=\"console\" class=\"org.apache.log4j.ConsoleAppender\">\r\n\t<param name=\"Target\" value=\"System.out\" \/>\r\n\t<layout class=\"org.apache.log4j.PatternLayout\">\r\n\t\t<param name=\"ConversionPattern\" value=\"%-5p %c{1} - %m%n\" \/>\r\n\t<\/layout>\r\n\t<filter class=\"com.scdev.log4j.filters.MyLog4jFilter\" \/>\r\n<\/appender>\r\n\r\n<logger name=\"com.scdev.log4j\" additivity=\"false\">\r\n\t<level value=\"TRACE\" \/>\r\n\t<appender-ref ref=\"console\" \/>\r\n<\/logger>\r\n\r\n<root>\r\n\t<priority value=\"DEBUG\" \/>\r\n\t<appender-ref ref=\"console\" \/>\r\n<\/root>\r\n\r\n<\/log4j:configuration>\r\n<\/code><\/pre>\n\u30b3\u30f3\u30bd\u30fc\u30eb\u30a2\u30da\u30f3\u30c0\u30fc\u5185\u3067Filter\u30af\u30e9\u30b9\u306e\u4f7f\u7528\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4ee5\u4e0b\u306f\u57fa\u672c\u7684\u306a\u30ed\u30ae\u30f3\u30b0\u3092\u884c\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u30af\u30e9\u30b9\u3067\u3059\u3002<\/p>\n
package com.scdev.log4j.main;\r\n\r\nimport org.apache.log4j.Logger;\r\nimport org.apache.log4j.PropertyConfigurator;\r\nimport org.apache.log4j.xml.DOMConfigurator;\r\n\r\npublic class Log4jExample {\r\n\r\n\tstatic {\r\n\t\tinit();\r\n\t}\r\n\r\n\tprivate final static Logger logger = Logger.getLogger(Log4jExample.class);\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tlogger.trace(\"My Trace Log\");\r\n\t\tlogger.debug(\"My Debug Log\");\r\n\t\tlogger.info(\"My Info Log\");\r\n\t\tlogger.warn(\"My Warn Log\");\r\n\t\tlogger.error(\"My error log\");\r\n\t\tlogger.fatal(\"My fatal log\");\r\n\t}\r\n\r\n\t\/**\r\n\t * method to init log4j configurations\r\n\t *\/\r\n\tprivate static void init() {\r\n\t\tDOMConfigurator.configure(\"log4j.xml\");\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u30ed\u30b0\u304c\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n
INFO Log4jExample - My Info Log\r\nFATAL Log4jExample - My fatal log\r\n<\/code><\/pre>\n\u79c1\u305f\u3061\u306f\u3001\u72ec\u81ea\u306e\u30ab\u30b9\u30bf\u30e0\u30d5\u30a3\u30eb\u30bf\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u3089\u306b\u8907\u96d1\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u7279\u5b9a\u306e\u5834\u5408\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u30a2\u30da\u30f3\u30c0\u30fc\u306b\u793a\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u3001org.apache.log4j.varia.LevelMatchFilter\u3068org.apache.log4j.varia.DenyAllFilter\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
<appender name=\"console\" class=\"org.apache.log4j.ConsoleAppender\">\r\n\t<param name=\"Target\" value=\"System.out\" \/>\r\n\t<layout class=\"org.apache.log4j.PatternLayout\">\r\n\t\t<param name=\"ConversionPattern\" value=\"%-5p %c{1} - %m%n\" \/>\r\n\t<\/layout>\r\n\t<filter class=\"org.apache.log4j.varia.LevelMatchFilter\">\r\n\t\t<param name=\"LevelToMatch\" value=\"INFO\" \/>\r\n \t<param name=\"AcceptOnMatch\" value=\"true\" \/>\r\n\t<\/filter>\r\n\t<filter class=\"org.apache.log4j.varia.LevelMatchFilter\">\r\n\t\t<param name=\"LevelToMatch\" value=\"FATAL\" \/>\r\n \t<param name=\"AcceptOnMatch\" value=\"true\" \/>\r\n\t<\/filter>\r\n\t<filter class=\"org.apache.log4j.varia.DenyAllFilter\"\/>\r\n<\/appender>\r\n<\/code><\/pre>\n\u79c1\u9054\u306f\u307e\u305f\u3001\u7279\u5b9a\u306e\u7bc4\u56f2\u5916\u306e\u512a\u5148\u5ea6\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u62d2\u5426\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308borg.apache.log4j.varia.LevelRangeFilter\u30af\u30e9\u30b9\u3082\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u304clog4j\u306e\u30ec\u30d9\u30eb\u3068\u30d5\u30a3\u30eb\u30bf\u306e\u7c21\u5358\u306a\u7406\u89e3\u306b\u3064\u3044\u3066\u306e\u60c5\u5831\u3067\u3059\u3002\u53c2\u8003\u6587\u732e\uff1a<\/p>\n
\n- Log4j Level API<\/li>\n
- Log4j Custom Filter StackOverflow<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
\u3082\u3057\u3082\u3042\u306a\u305f\u304clog4j\u3092\u4f7f\u7528\u3057\u305f\u3053\u3068\u304c\u3042\u308b\u306a\u3089\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u305f\u3081\u306e\u591a\u304f\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308b\u3053\u3068\u306b\u6c17\u4ed8\u304f\u3067\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\uff1a logger.trace(“My Log message”); logger.debu […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-600","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
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