{"id":61048,"date":"2018-06-27T02:01:28","date_gmt":"2018-06-26T17:01:28","guid":{"rendered":"https:\/\/www.sejuku.net\/blog\/?p=61048"},"modified":"2024-05-06T11:49:07","modified_gmt":"2024-05-06T02:49:07","slug":"%e3%80%90java%e5%85%a5%e9%96%80%e3%80%91logger%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9%e3%83%ad%e3%82%b0%e3%83%ac%e3%83%99%e3%83%ab%e3%80%81%e5%87%ba%e5%8a%9b%e5%85%88%e3%81%ae%e8%a8%ad%e5%ae%9a%e3%82%82","status":"publish","type":"post","link":"https:\/\/www.sejuku.net\/blog\/61048","title":{"rendered":"\u3010Java\u5165\u9580\u3011Logger\u306e\u4f7f\u3044\u65b9(\u30ed\u30b0\u30ec\u30d9\u30eb\u3001\u51fa\u529b\u5148\u306e\u8a2d\u5b9a\u3082\u89e3\u8aac)"},"content":{"rendered":"<p>\u30ed\u30ae\u30f3\u30b0\u3068\u306f\u3001<b>\u8d77\u3053\u3063\u305f\u51fa\u6765\u4e8b\u306b\u3064\u3044\u3066\u306e\u60c5\u5831\u306a\u3069\u3092\u6642\u9593\u7d4c\u904e\u306b\u305d\u3063\u3066\u8a18\u9332\u3059\u308b\u5c65\u6b74<\/b>\u306e\u3053\u3068\u3067\u3059\u3002\u30bd\u30d5\u30c8\u30a6\u30a8\u30a2\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u7279\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u3053\u306e\u5c65\u6b74\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u3069\u3053\u3067\u3069\u3093\u306a\u4e0d\u5177\u5408\u304c\u767a\u751f\u3057\u305f\u304b\u628a\u63e1\u3067\u304d\u5bfe\u5fdc\u3092\u7d5e\u308a\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Java\u3067\u306f\u3053\u306e\u30ed\u30ae\u30f3\u30b0\u306e\u6a5f\u80fd\u304c\u6a19\u6e96\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u3093\u306a\u30ed\u30ae\u30f3\u30b0\u3067\u3059\u304cJava\u3067\u306fLogger\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Logger\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u4ee5\u4e0b\u306e\u5185\u5bb9\u3067\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li><b>\u3010\u57fa\u790e\u3011Logging(\u30ed\u30ae\u30f3\u30b0)\u3068\u306f\uff1f<\/b><\/li>\n<li><b>\u3010\u57fa\u790e\u3011\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u306f\uff1f<\/b><\/li>\n<li><b>\u3010\u57fa\u790e\u3011Logger\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u306b\u306f\uff1f<\/b><\/li>\n<li><b>\u3010\u767a\u5c55\u3011properties\u3067\u306e\u8a2d\u5b9a<\/b><\/li>\n<li><b>\u3010\u767a\u5c55\u3011Logging(\u30ed\u30ae\u30f3\u30b0)\u306e\u969b\u306e\u7559\u610f\u70b9<\/b><\/li>\n<\/ul>\n<\/div>\n<p>\u4eca\u56de\u306fLogger\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u3001\u4f7f\u3044\u65b9\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\uff01<\/p>\n<p>\u306a\u304a\u3001Java\u306e\u8a18\u4e8b\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/www.sejuku.net\/blog\/148098\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>Logging(\u30ed\u30ae\u30f3\u30b0)\u3068\u306f\uff1f<\/h2>\n<p>Logging(\u30ed\u30ae\u30f3\u30b0)\u3068\u306f\u5192\u982d\u3067\u3082\u8ff0\u3079\u307e\u3057\u305f\u304c\u3001\u8d77\u3053\u3063\u305f\u51fa\u6765\u4e8b\u306b\u3064\u3044\u3066\u306e\u60c5\u5831\u306a\u3069\u3092\u6642\u9593\u7d4c\u904e\u306b\u305d\u3063\u3066\u8a18\u9332\u3059\u308b\u5c65\u6b74\u306e\u3053\u3068\u3067\u3059\u3002\u5c65\u6b74\u306b\u6b8b\u3059\u5185\u5bb9\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<div class=\"box01\">\n<ul>\n<li><b>\u4f7f\u7528\u3057\u3066\u3044\u308b\u8a2d\u5b9a\u5024\u3084\u8a73\u7d30\u306a\u60c5\u5831\u8868\u793a\u306a\u3069\u30c7\u30d0\u30c3\u30b0\u7528\u306e\u8868\u793a<\/b><\/li>\n<li><b>\u6b63\u5e38\u52d5\u4f5c\u306e\u8a18\u9332<\/b><\/li>\n<li><b>\u8b66\u544a\u3092\u51fa\u3057\u3066\u304a\u304d\u305f\u3044\u52d5\u4f5c\u306e\u8a18\u9332<\/b><\/li>\n<li><b>\u30a8\u30e9\u30fc\u306a\u3069\u306e\u554f\u984c\u306e\u8a18\u9332<\/b><\/li>\n<li><b>\u505c\u6b62\u3057\u3066\u3057\u307e\u3046\u3088\u3046\u306a\u81f4\u547d\u7684\u306a\u8a18\u9332<\/b><\/li>\n<\/ul>\n<p><\/div><br \/>\n\u306a\u3069\u3001\u3053\u308c\u3089\u306e\u5185\u5bb9\u306f\u5b9f\u884c\u6642\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u5ea6\u5408\u3044\u306b\u3088\u3063\u3066\u30ec\u30d9\u30eb\u5206\u3051\u304c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u8a00\u3044\u307e\u3059\u304c\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u306b\u3064\u3044\u3066\u306f\u3053\u306e\u3042\u3068\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u306f\uff1f<\/h2>\n<p>Logging(\u30ed\u30ae\u30f3\u30b0)\u3067\u5c65\u6b74\u306b\u6b8b\u3059\u5185\u5bb9\u306f\u3001\u5b9f\u884c\u6642\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3059\u5ea6\u5408\u3044\u306b\u3088\u3063\u3066\u30ec\u30d9\u30eb\u5206\u3051\u304c\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u8a00\u3044\u307e\u3059\u3002\u30ed\u30b0\u30ec\u30d9\u30eb\u306b\u3064\u3044\u3066\u306fJava\u3067\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5206\u985e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Java\u3067\u306f\u30ed\u30b0\u30ec\u30d9\u30eb\u306fjava.util.logging.Level\u30af\u30e9\u30b9\u3067\u5b9a\u7fa9\u3055\u308c\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u3068\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<table id=\"tablepress-556\" class=\"tablepress tablepress-id-556\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">\u30ec\u30d9\u30eb\u5206\u985e<\/th><th class=\"column-2\">Level\u30af\u30e9\u30b9\u306e\u5b9a\u6570<\/th><th class=\"column-3\">Logger\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9<\/th><th class=\"column-4\">\u6570\u5024<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">\u6700\u3082\u8a73\u7d30<\/td><td class=\"column-2\">FINEST<\/td><td class=\"column-3\">finest<\/td><td class=\"column-4\">300<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">\u8a73\u7d30<\/td><td class=\"column-2\">FINER<\/td><td class=\"column-3\">finer<\/td><td class=\"column-4\">400<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">\u666e\u901a<\/td><td class=\"column-2\">FINE<\/td><td class=\"column-3\">fine<\/td><td class=\"column-4\">500<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">\u69cb\u6210<\/td><td class=\"column-2\">CONFIG<\/td><td class=\"column-3\">config<\/td><td class=\"column-4\">700<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">\u60c5\u5831<\/td><td class=\"column-2\">INFO<\/td><td class=\"column-3\">info<\/td><td class=\"column-4\">800<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">\u8b66\u544a<\/td><td class=\"column-2\">WARNING<\/td><td class=\"column-3\">warning<\/td><td class=\"column-4\">900<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">\u91cd\u5927<\/td><td class=\"column-2\">SEVERE<\/td><td class=\"column-3\">severe<\/td><td class=\"column-4\">1000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-556 from cache -->\n<p>\u3053\u306e\u30ec\u30d9\u30eb\u5206\u3051\u3092\u57fa\u6e96\u306b\u3057\u3066\u3001<b>\u3069\u306e\u30ec\u30d9\u30eb\u304b\u3089\u5c65\u6b74\u3068\u3057\u3066\u6b8b\u3057\u3066\u3044\u304f\u304b\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/b>\u3002\u4f8b\u3048\u3070Level.INFO\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u30ed\u30b0\u3068\u3057\u3066\u51fa\u529b\u3055\u308c\u308b\u306e\u306f\u3001\u300c\u60c5\u5831\u300d\u300c\u8b66\u544a\u300d\u300c\u91cd\u5927\u300d\u306e\u3088\u3046\u306b\u3001\u8a2d\u5b9a\u30ec\u30d9\u30eb\u4ee5\u4e0b\u304c\u5c65\u6b74\u3068\u3057\u3066\u6b8b\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>Logger\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u306b\u306f\uff1f<\/h2>\n<p>Logger\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u9806\u3092\u8ffd\u3063\u3066\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3>Logger\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u751f\u6210<\/h3>\n<p>\u307e\u305aLogger\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">Logger logger = Logger.getLogger(\"logger\u306e\u540d\u524d\")<\/pre>\n<p>getLogger\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002getLogger\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u306b\u306flogger\u306e\u540d\u524d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002logger\u306e\u540d\u524d\u306f\u3069\u306e\u3088\u3046\u306a\u6587\u5b57\u5217\u3067\u3082\u69cb\u3044\u307e\u305b\u3093\u304c\u3001\u901a\u5e38\u30ed\u30ae\u30f3\u30b0\u306e\u5bfe\u8c61\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u3084\u30af\u30e9\u30b9\u540d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u30af\u30e9\u30b9\u540d\u3092\u53d6\u5f97\u3059\u308b\u306b\u306f\u30af\u30e9\u30b9\u540d.class.getName()\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<h3>\u51fa\u529b\u5148\u306e\u8a2d\u5b9a<\/h3>\n<p>\u6b21\u306b\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3059\u308b\u8a2d\u5b9a\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3059\u308b\u306b\u306f\u3001FileHandler\u30af\u30e9\u30b9\u3092\u4f7f\u3044\u307e\u3059\u3002FileHandler\u30af\u30e9\u30b9\u306e\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306e\u7b2c1\u5f15\u6570\u306b\u306f\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u7b2c2\u5f15\u6570\u306b\u306f\u4e0a\u66f8\u304d\u53ef\u306e\u5834\u5408false\u3092\u3001\u8ffd\u8a18\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408\u306b\u306ftrue\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u7b2c2\u5f15\u6570\u3092\u6307\u5b9a\u305b\u305a\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5834\u5408\u306f\u4e0a\u66f8\u304d\u53ef\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">FileHandler fHandler = new FileHandler(\u201dSample.log\u201d, true);\r\nfHandler.setFormatter(new SimpleFormatter());\r\nlogger.addHandler(fHandler);<\/pre>\n<p>setFormatter\u30e1\u30bd\u30c3\u30c9\u306e\u5f15\u6570\u3067\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u306fXML\u5f62\u5f0f\u3067\u51fa\u529b\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306fSimpleFormatter\u3092\u6307\u5b9a\u3057\u3066\u4eba\u304c\u8aad\u307f\u3084\u3059\u3044\u5f62\u5f0f\u3067\u51fa\u529b\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>logger\u304b\u3089addHandler\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3001\u5f15\u6570\u306bfHandler\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u3001\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3001\u305d\u306e\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">ConsoleHandler cHandler = new ConsoleHandler();\r\nlogger.addHandler(cHandler);<\/pre>\n<h3>\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a<\/h3>\n<p>\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">fHandler.setLevel(Level.INFO);<\/pre>\n<p>setLevel\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u5f15\u6570\u306bLevel\u30af\u30e9\u30b9\u306e\u5b9a\u6570\u3082\u3057\u304f\u306f\u6570\u5024\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/h3>\n<p>\u305d\u308c\u3067\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u52d5\u304b\u3057\u3066\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"lang:java decode:true \">import java.io.IOException;\r\nimport java.util.logging.FileHandler;\r\nimport java.util.logging.Level;\r\nimport java.util.logging.Logger;\r\nimport java.util.logging.SimpleFormatter;\r\n\r\npublic class LoggerSample {\r\n    public static void main(String[] args) {\r\n        \/\/ Logger\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\r\n        Logger logger = Logger.getLogger(LoggerSample.class.getName());\r\n\r\n        try {\r\n            \/\/ Handler\u3092\u751f\u6210\u3057logger\u306b\u767b\u9332\r\n            FileHandler fHandler = new FileHandler(\"Sample.log\", true);\r\n            fHandler.setFormatter(new SimpleFormatter());\r\n            logger.addHandler(fHandler);\r\n\r\n            \/\/ \u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a\r\n            logger.setLevel(Level.INFO);\r\n\r\n            \/\/ Logger\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u529b\r\n            logger.finest(\"FINEST\");\r\n            logger.finer(\"FINER\");\r\n            logger.fine(\"FINE\");\r\n            logger.config(\"CONFIG\");\r\n            logger.info(\"INFO\");\r\n            logger.warning(\"WARNING\");\r\n            logger.severe(\"SEVERE\");\r\n\r\n            \/\/ \u4f8b\u5916\u3092\u30b9\u30ed\u30fc\r\n            throw new IllegalArgumentException();\r\n        } catch (IllegalArgumentException e) {\r\n            logger.log(Level.INFO, \"\u4f8b\u5916\u306e\u30b9\u30ed\u30fc\u3092\u6355\u6349\", e);\r\n        } catch (SecurityException e) {\r\n            e.printStackTrace();\r\n        } catch (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c(Sample.log)\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u60c5\u5831: INFO\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u8b66\u544a: WARNING\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u91cd\u5927: SEVERE\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u60c5\u5831: \u4f8b\u5916\u306e\u30b9\u30ed\u30fc\u3092\u6355\u6349\r\njava.lang.IllegalArgumentException\r\n    at LoggerSample.main(LoggerSample.java:31)<\/pre>\n<p>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bfFileHandler\u306fSecurityException\u3068IOException\u306e\u4f8b\u5916\u3092\u767a\u751f\u3059\u308b\u306e\u3067try-catch\u69cb\u6587\u3092\u7528\u3044\u3066\u3044\u307e\u3059\u3002finest\u3084finer\u306a\u3069\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u305d\u308c\u305e\u308c\u306e\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>setLevel\u30e1\u30bd\u30c3\u30c9\u3067\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a\u3092Level.INFO\u4ee5\u4e0b\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u308c\u306b\u5bfe\u5fdc\u3057\u305f\u30ed\u30b0\u306e\u307f\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305fIllegalArgumentException\u306e\u4f8b\u5916\u3092\u30b9\u30ed\u30fc\u3001\u6355\u6349\u3057\u3066log\u30e1\u30bd\u30c3\u30c9\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>log\u30e1\u30bd\u30c3\u30c9\u306e\u7b2c1\u5f15\u6570\u3067\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u7b2c2\u5f15\u6570\u3067\u30ed\u30b0\u306b\u51fa\u529b\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6307\u5b9a\u3057\u3001\u7b2c3\u5f15\u6570\u306b\u4f8b\u5916\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6307\u5b9a\u3057\u3001\u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u306e\u5185\u5bb9\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30bf\u30c3\u30af\u30c8\u30ec\u30fc\u30b9\u306e\u5185\u5bb9\u304b\u3089\u3069\u3053\u3067\u3069\u3093\u306a\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u304b\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>properties\u3067\u306e\u8a2d\u5b9a<\/h2>\n<p>\u5148\u307b\u3069\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3001\u30ed\u30b0\u306e\u51fa\u529b\u5148(\u30d5\u30a1\u30a4\u30eb\u304b\u30b3\u30f3\u30bd\u30fc\u30eb\u304b)\u3001\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u4fdd\u5b58\u5148\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a\u306a\u3069\u3092\u5b9f\u884c\u30af\u30e9\u30b9\u306e\u4e2d\u3067\u6307\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u4f7f\u7528\u3059\u308b\u30af\u30e9\u30b9\u5168\u90e8\u306b\u30ed\u30ae\u30f3\u30b0\u306e\u8a2d\u5b9a\u3092\u8a18\u8ff0\u3059\u308b\u306e\u306f\u73fe\u5b9f\u7684\u3067\u306f\u306a\u3044\u3067\u3059\u3088\u306d\u3002\u305d\u3053\u3067<b>logging.properties\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u3066\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5<\/b>\u3092\u8aac\u660e\u3057\u307e\u3059\u3002logging.properties\u30d5\u30a1\u30a4\u30eb\u306f\u4f8b\u3048\u3070<\/p>\n<p>C:Program FilesJavajdk-10.0.1conf<\/p>\n<p>\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u5143\u306b\u72ec\u81ea\u306elogging.properties\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<p>logging.properties(\u5909\u66f4\u90e8\u306e\u307f)\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">handlers= java.util.logging.FileHandler,java.util.logging.ConsoleHandler\r\n\r\njava.util.logging.FileHandler.level = INFO\r\njava.util.logging.FileHandler.pattern = Sample.log\r\njava.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter<\/pre>\n<pre class=\"lang:java decode:true \">import java.io.FileInputStream;\r\nimport java.io.IOException;\r\nimport java.util.logging.Level;\r\nimport java.util.logging.Logger;\r\nimport java.util.logging.LogManager;\r\n\r\npublic class LoggerSample {\r\n    public static void main(String[] args) {\r\n        \/\/ Logger\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\r\n        Logger logger = Logger.getLogger(LoggerSample.class.getName());\r\n\r\n        try {\r\n            \/\/ LogManager\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3057logging.properties\u3092\u8aad\u307f\u8fbc\u3080\r\n            LogManager manager = LogManager.getLogManager();\r\n            manager.readConfiguration(new FileInputStream(\"logging.properties\"));\r\n\r\n            \/\/ Logger\u30af\u30e9\u30b9\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u51fa\u529b\r\n            logger.finest(\"FINEST\");\r\n            logger.finer(\"FINER\");\r\n            logger.fine(\"FINE\");\r\n            logger.config(\"CONFIG\");\r\n            logger.info(\"INFO\");\r\n            logger.warning(\"WARNING\");\r\n            logger.severe(\"SEVERE\");\r\n\r\n            \/\/ \u4f8b\u5916\u3092\u30b9\u30ed\u30fc\r\n            throw new IllegalArgumentException();\r\n        } catch (IllegalArgumentException e) {\r\n            logger.log(Level.INFO, \"\u4f8b\u5916\u306e\u30b9\u30ed\u30fc\u3092\u6355\u6349\", e);\r\n        } catch (SecurityException e) {\r\n            e.printStackTrace();\r\n        } catch (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n    }\r\n}<\/pre>\n<p>\u5b9f\u884c\u7d50\u679c(Sample.log)\uff1a<\/p>\n<pre class=\"striped:false marking:false ranges:false nums:false nums-toggle:false lang:default decode:true \">6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u60c5\u5831: INFO\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u8b66\u544a: WARNING\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u91cd\u5927: SEVERE\r\n6\u6708 26, 2018 11:40:18 \u5348\u5f8c LoggerSample main\r\n\u60c5\u5831: \u4f8b\u5916\u306e\u30b9\u30ed\u30fc\u3092\u6355\u6349\r\njava.lang.IllegalArgumentException\r\n    at LoggerSample.main(LoggerSample.java:27)<\/pre>\n<p>logging.properties\u3092\u8aad\u307f\u8fbc\u3080\u5834\u5408\u306f\u3001LogManager\u30af\u30e9\u30b9\u3092\u4f7f\u3044\u307e\u3059\u3002readConfiguration\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066logging.properties\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<h2>Logging(\u30ed\u30ae\u30f3\u30b0)\u306e\u969b\u306e\u7559\u610f\u70b9<\/h2>\n<p>Logging(\u30ed\u30ae\u30f3\u30b0)\u3067\u5c65\u6b74\u3092\u6b8b\u3059\u969b\u306b\u7559\u610f\u3059\u308b\u3079\u304d\u70b9\u306b\u3064\u3044\u3066\u3044\u304f\u3064\u304b\u6319\u3052\u3066\u304a\u304d\u307e\u3059\u3002<br \/>\n<div class=\"box01\"><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><b>\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u51fa\u529b\u5148<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u30ed\u30b0\u306b\u306f\u91cd\u8981\u60c5\u5831\u304c\u51fa\u529b\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308b\u305f\u3081\u3001\u4e0d\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u5834\u6240\u306b\u51fa\u529b\u3059\u308b\u304b\u3069\u3046\u304b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><b>\u30ed\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u306f\u5c02\u7528\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u307e\u3068\u3081\u307e\u3057\u3087\u3046\u3002\u65e5\u672c\u8a9e\u306a\u3069\u306e\u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u6587\u5b57\u306f\u4f7f\u7528\u3059\u308b\u74b0\u5883\u306b\u3088\u3063\u3066\u306f\u6587\u5b57\u5316\u3051\u3057\u307e\u3059\u306e\u3067\u3001\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002\u5185\u5bb9\u304c\u308f\u304b\u308a\u3084\u3059\u3044\u3088\u3046\u306b\u7c21\u6f54\u306b\u8a18\u8ff0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li style=\"list-style-type: 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