{"id":120279,"date":"2024-03-23T21:56:05","date_gmt":"2024-03-23T12:56:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e6%8c%87%e5%ae%9a%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e3%81%ab%e5%87%ba%e5%8a%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/"},"modified":"2024-03-28T05:43:43","modified_gmt":"2024-03-27T20:43:43","slug":"java%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e6%8c%87%e5%ae%9a%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e3%81%ab%e5%87%ba%e5%8a%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e6%8c%87%e5%ae%9a%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e3%81%ab%e5%87%ba%e5%8a%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/","title":{"rendered":"java\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f?"},"content":{"rendered":"

Java\u3067\u306fjava.util.logging\u3084log4j\u7b49\u306e\u30ed\u30ae\u30f3\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \n
  1. java.util.logging<\/li>\n<\/ol>\n
      \n
    1. \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067java.util.logging\u95a2\u9023\u306e\u30af\u30e9\u30b9\u3084\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3059\u308b\u3002<\/li>\n
    2. java.util.logging.Logger\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002<\/li>\n
    3. FileHandler\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u6307\u5b9a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3078\u30ed\u30b0\u51fa\u529b\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3002<\/li>\n
    4. logger.log(Level, message)\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b0\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n

      \u30b5\u30f3\u30d7\u30eb\u306e\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n

      import<\/span> java.util.logging.*;\r\npublic<\/span> class<\/span> LogToFileExample<\/span> {\r\nprivate<\/span> static<\/span> final<\/span> Logger<\/span> logger<\/span> =<\/span> Logger.getLogger(LogToFileExample.class.getName());\r\npublic<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\ntry<\/span> {\r\n\/\/ \u521b\u5efaFileHandler\u5bf9\u8c61\uff0c\u8bbe\u7f6e\u65e5\u5fd7\u8f93\u51fa\u5230\u6307\u5b9a\u76ee\u5f55<\/span>\r\nFileHandler<\/span> fileHandler<\/span> =<\/span> new<\/span> FileHandler<\/span>(\"\/path\/to\/logfile.log\"<\/span>);\r\nlogger.addHandler(fileHandler);\r\n\/\/ \u8bbe\u7f6e\u65e5\u5fd7\u7ea7\u522b<\/span>\r\nlogger.setLevel(Level.ALL);\r\n\/\/ \u8f93\u51fa\u65e5\u5fd7<\/span>\r\nlogger.log(Level.INFO, \"This is a log message\"<\/span>);\r\n} catch<\/span> (Exception e) {\r\nlogger.log(Level.SEVERE, \"Exception: \"<\/span>, e);\r\n}\r\n}\r\n}\r\n<\/code><\/pre>\n
        \n
      1. \u30ed\u30b04j<\/li>\n<\/ol>\n
          \n
        1. \u30b3\u30fc\u30c9\u3067org.apache.log4j\u95a2\u9023\u306e\u30af\u30e9\u30b9\u3084\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/li>\n
        2. \u30ed\u30ac\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n
        3. PropertyConfigurator\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3002<\/li>\n
        4. \u30ed\u30b0\u51fa\u529b\u3092\u6307\u5b9a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n
        5. logger.info(message)\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b0\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
          \u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
          import<\/span> org.apache.log4j.*;\r\npublic<\/span> class<\/span> LogToFileExample<\/span> {\r\nprivate<\/span> static<\/span> final<\/span> Logger<\/span> logger<\/span> =<\/span> Logger.getLogger(LogToFileExample.class);\r\npublic<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\ntry<\/span> {\r\n\/\/ \u52a0\u8f7dlog4j\u914d\u7f6e\u6587\u4ef6<\/span>\r\nPropertyConfigurator.configure(\"log4j.properties\"<\/span>);\r\n\/\/ \u8f93\u51fa\u65e5\u5fd7<\/span>\r\nlogger.info(\"This is a log message\"<\/span>);\r\n} catch<\/span> (Exception e) {\r\nlogger.error(\"Exception: \"<\/span>, e);\r\n}\r\n}\r\n}\r\n<\/code><\/pre>\n
          \u30ed\u30b0\u306e\u51fa\u529b\u5148\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306f\u3001\u4f7f\u7528\u3057\u3066\u3044\u308b\u30ed\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u5fdc\u3058\u3066\u3001\u9069\u5b9c\u8a2d\u5b9a\u3084\u8abf\u6574\u3092\u884c\u3063\u3066\u3001\u4e0a\u8a18\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u5185\u306e \/path\/to\/logfile.log \u3092\u8a72\u5f53\u3059\u308b\u30ed\u30b0\u306e\u51fa\u529b\u5148\u306b\u7f6e\u304d\u63db\u3048\u3066\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          Java\u3067\u306fjava.util.logging\u3084log4j\u7b49\u306e\u30ed\u30ae\u30f3\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3067\u304d\u307e\u3059\u3002 java.util.logging \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067java.util.logging\u95a2\u9023\u306e\u30af\u30e9\u30b9\u3084 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-120279","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\njava\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"java\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f?\" \/>\n<meta property=\"og:description\" content=\"Java\u3067\u306fjava.util.logging\u3084log4j\u7b49\u306e\u30ed\u30ae\u30f3\u30b0\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3067\u304d\u307e\u3059\u3002 java.util.logging \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067java.util.logging\u95a2\u9023\u306e\u30af\u30e9\u30b9\u3084 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-23T12:56:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-27T20:43:43+00:00\" \/>\n<meta name=\"author\" content=\"\u685c, \u6625\u6a39\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u685c, \u6625\u6a39\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e6%8c%87%e5%ae%9a%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e3%81%ab%e5%87%ba%e5%8a%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e6%8c%87%e5%ae%9a%e3%81%ae%e3%83%87%e3%82%a3%e3%83%ac%e3%82%af%e3%83%88%e3%83%aa%e3%81%ab%e5%87%ba%e5%8a%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/\",\"name\":\"java\u3067\u30ed\u30b0\u3092\u6307\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f? 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