{"id":133521,"date":"2024-03-26T03:59:04","date_gmt":"2024-03-25T18:59:04","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%b5%e3%82%a4%e3%82%ba%e3%81%ae%e5%88%b6%e9%99%90%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-27T03:40:53","modified_gmt":"2024-03-26T18:40:53","slug":"log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%b5%e3%82%a4%e3%82%ba%e3%81%ae%e5%88%b6%e9%99%90%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%b5%e3%82%a4%e3%82%ba%e3%81%ae%e5%88%b6%e9%99%90%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"log4j\u3067\u30ed\u30b0\u30b5\u30a4\u30ba\u306e\u5236\u9650\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u30ed\u30b0\u306bRollingFileAppender\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u3092\u5236\u9650\u3067\u304d\u307e\u3059\u3002RollingFileAppender\u306f\u30ed\u30b0\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u81ea\u52d5\u7684\u306b\u66f8\u304d\u8fbc\u307f\u3001\u305d\u306e\u30b5\u30a4\u30ba\u304c\u4e00\u5b9a\u306e\u95be\u5024\u306b\u9054\u3059\u308b\u3068\u30ed\u30b0\u3092\u683c\u7d0d\u3059\u308b\u65b0\u3057\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u81ea\u52d5\u7684\u306b\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>mylog.log\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u30ed\u30b0\u3092\u66f8\u304d\u8fbc\u307f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u304c3\u30e1\u30ac\u30d0\u30a4\u30c8\u3092\u8d85\u3048\u308b\u3068\u65b0\u3057\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u81ea\u52d5\u7684\u306b\u4f5c\u6210\u3055\u308c\u308b\u69cb\u6210\u30d5\u30a1\u30a4\u30eb\u306e\u4f8b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">appender<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"RollingFileAppender\"<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"org.apache.log4j.RollingFileAppender\"<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"File\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"mylog.log\"<\/span> \/&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"MaxFileSize\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"3MB\"<\/span> \/&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"MaxBackupIndex\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"10\"<\/span> \/&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">layout<\/span> <span class=\"hljs-attr\">class<\/span>=<span class=\"hljs-string\">\"org.apache.log4j.PatternLayout\"<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">param<\/span> <span class=\"hljs-attr\">name<\/span>=<span class=\"hljs-string\">\"ConversionPattern\"<\/span> <span class=\"hljs-attr\">value<\/span>=<span class=\"hljs-string\">\"%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n\"<\/span> \/&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">layout<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">appender<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u69cb\u6210\u3067\u306f\u3001MaxFileSize\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u6700\u5927\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u304c\u3053\u306e\u3057\u304d\u3044\u5024\u306b\u9054\u3059\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u65b0\u3057\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002MaxBackupIndex\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306f\u4fdd\u6301\u3059\u308b\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u6570\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001\u6700\u592710\u500b\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u304c\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>RollingFileAppender\u306e\u4ed6\u306b\u3001DailyRollingFileAppender\u306e\u3088\u3046\u306b\u65e5\u4ed8\u3067\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u5206\u5272\u3059\u308b\u306a\u3069\u3001\u30ed\u30b0\u30b5\u30a4\u30ba\u3092\u5236\u9650\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u4ed6\u306e\u30bf\u30a4\u30d7\u306eAppender\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u9069\u306a\u9078\u629e\u306f\u3001\u8981\u4ef6\u3068\u5b9f\u969b\u306e\u72b6\u6cc1\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30ed\u30b0\u306bRollingFileAppender\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u3092\u5236\u9650\u3067\u304d\u307e\u3059\u3002RollingFileAppender\u306f\u30ed\u30b0\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u81ea\u52d5\u7684\u306b\u66f8\u304d\u8fbc\u307f\u3001\u305d\u306e\u30b5\u30a4\u30ba\u304c\u4e00\u5b9a\u306e\u95be\u5024\u306b\u9054\u3059\u308b\u3068\u30ed\u30b0\u3092\u683c\u7d0d\u3059\u308b\u65b0\u3057\u3044 [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-133521","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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