{"id":15705,"date":"2024-03-16T01:59:46","date_gmt":"2024-03-15T16:59:46","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e5%8f%a4%e3%81%84%e3%83%ad%e3%82%b0%e3%82%92%e5%ae%9a%e6%9c%9f%e7%9a%84%e3%81%ab%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b\/"},"modified":"2025-08-06T03:47:20","modified_gmt":"2025-08-05T18:47:20","slug":"log4j%e3%81%a7%e5%8f%a4%e3%81%84%e3%83%ad%e3%82%b0%e3%82%92%e5%ae%9a%e6%9c%9f%e7%9a%84%e3%81%ab%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e5%8f%a4%e3%81%84%e3%83%ad%e3%82%b0%e3%82%92%e5%ae%9a%e6%9c%9f%e7%9a%84%e3%81%ab%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b\/","title":{"rendered":"log4j\u3067\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>log4j\u3067\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u306b\u306f\u3001RollingFileAppender\u3084DailyRollingFileAppender\u3092\u4f7f\u7528\u3057\u3001Quartz\u306a\u3069\u306e\u30bf\u30a4\u30de\u30fc\u30bf\u30b9\u30af\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>log4j.properties\u30d5\u30a1\u30a4\u30eb\u306bRollingFileAppender\u307e\u305f\u306fDailyRollingFileAppender\u3092\u8a2d\u5b9a\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u540d\u3068\u30d5\u30a1\u30a4\u30eb\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u6226\u7565\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4f8b\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>log4j.appender.myAppender=org.apache.log4j.RollingFileAppender\r\nlog4j.appender.myAppender.File=\/path\/to\/log\/file.log\r\nlog4j.appender.myAppender.MaxFileSize=5MB\r\nlog4j.appender.myAppender.MaxBackupIndex=10\r\nlog4j.appender.myAppender.layout=org.apache.log4j.PatternLayout\r\nlog4j.appender.myAppender.layout.ConversionPattern=%d [%t] %-5p %c{1} - %m%n\r\n<\/code><\/pre>\n<p>MaxFileSize\u306f\u30011\u3064\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306e\u6700\u5927\u30b5\u30a4\u30ba\u3092\u793a\u3057\u3001MaxBackupIndex\u306f\u4fdd\u5b58\u3055\u308c\u308b\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30d5\u30a1\u30a4\u30eb\u306e\u6570\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5b9a\u671f\u51e6\u7406\u306e\u8a2d\u5b9a\uff1a<br \/>\n\u5b9a\u671f\u51e6\u7406\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\uff08\u4f8b\uff1aQuartz\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u53e4\u3044\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u305f\u3081\u306e\u5b9a\u671f\u51e6\u7406\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u4f8b\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.quartz.*;\r\n<span class=\"hljs-keyword\">import<\/span> org.quartz.impl.StdSchedulerFactory;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">LogCleanupJob<\/span> <span class=\"hljs-keyword\">implements<\/span> <span class=\"hljs-title class_\">Job<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">execute<\/span><span class=\"hljs-params\">(JobExecutionContext context)<\/span> <span class=\"hljs-keyword\">throws<\/span> JobExecutionException {\r\n        <span class=\"hljs-comment\">\/\/ \u5220\u9664\u65e7\u65e5\u5fd7\u6587\u4ef6\u7684\u903b\u8f91<\/span>\r\n        <span class=\"hljs-comment\">\/\/ ...<\/span>\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <span class=\"hljs-keyword\">throws<\/span> SchedulerException {\r\n        <span class=\"hljs-type\">JobDetail<\/span> <span class=\"hljs-variable\">job<\/span> <span class=\"hljs-operator\">=<\/span> JobBuilder.newJob(LogCleanupJob.class)\r\n                .withIdentity(<span class=\"hljs-string\">\"logCleanupJob\"<\/span>, <span class=\"hljs-string\">\"logCleanupGroup\"<\/span>)\r\n                .build();\r\n\r\n        <span class=\"hljs-type\">Trigger<\/span> <span class=\"hljs-variable\">trigger<\/span> <span class=\"hljs-operator\">=<\/span> TriggerBuilder.newTrigger()\r\n                .withIdentity(<span class=\"hljs-string\">\"logCleanupTrigger\"<\/span>, <span class=\"hljs-string\">\"logCleanupGroup\"<\/span>)\r\n                .startNow()\r\n                .withSchedule(CronScheduleBuilder.dailyAtHourAndMinute(<span class=\"hljs-number\">0<\/span>, <span class=\"hljs-number\">0<\/span>)) <span class=\"hljs-comment\">\/\/ \u6bcf\u59290\u70b9\u6267\u884c<\/span>\r\n                .build();\r\n\r\n        <span class=\"hljs-type\">Scheduler<\/span> <span class=\"hljs-variable\">scheduler<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">StdSchedulerFactory<\/span>().getScheduler();\r\n        scheduler.start();\r\n        scheduler.scheduleJob(job, trigger);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>execute\u30e1\u30bd\u30c3\u30c9\u5185\u3067\u3001\u53e4\u3044\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u30ed\u30b8\u30c3\u30af\u3092\u8a18\u8ff0\u3059\u308b\u305f\u3081\u306b\u3001Java\u306eFile\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>log4j\u3092\u4f7f\u7528\u3057\u3066\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\nlog4j.properties\u30d5\u30a1\u30a4\u30eb\u306b\u5b9a\u671f\u7684\u306b\u53e4\u3044\u30ed\u30b0\u3092\u524a\u9664\u3059\u308b\u30ed\u30b8\u30c3\u30af\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u305f\u3081\u306e\u30bf\u30a4\u30de\u30fc\u30a2\u30da\u30f3\u30c0\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code>log4j.appender.cleanupAppender=org.apache.log4j.net.SocketAppender\r\nlog4j.appender.cleanupAppender.Port=4712\r\nlog4j.appender.cleanupAppender.RemoteHost=localhost\r\nlog4j.appender.cleanupAppender.ReconnectionDelay=10000\r\nlog4j.appender.cleanupAppender.Application=LogCleanupJob\r\n<\/code><\/pre>\n<p>LogCleanupJob\u30af\u30e9\u30b9\u3067\u306f\u3001SocketAppender\u3092\u4f7f\u7528\u3057\u3066\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u30ed\u30b8\u30c3\u30af\u3092\u30c8\u30ea\u30ac\u30fc\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4e0a\u8a18\u306e\u624b\u9806\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308blog4j\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u306a\u304a\u3001log4j.properties\u30d5\u30a1\u30a4\u30eb\u3068\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u30bf\u30b9\u30af\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u95a2\u9023\u8a2d\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>log4j\u3067\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u306b\u306f\u3001RollingFileAppender\u3084DailyRollingFileAppender\u3092\u4f7f\u7528\u3057\u3001Quartz\u306a\u3069\u306e\u30bf\u30a4\u30de\u30fc\u30bf\u30b9\u30af\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002  [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-15705","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>log4j\u3067\u53e4\u3044\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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