{"id":26666,"date":"2024-03-17T07:45:05","date_gmt":"2024-03-16T22:45:05","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e5%87%ba%e5%8a%9b%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%ef%bc%9f\/"},"modified":"2024-03-22T14:24:10","modified_gmt":"2024-03-22T05:24:10","slug":"log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e5%87%ba%e5%8a%9b%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%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/log4j%e3%81%a7%e3%83%ad%e3%82%b0%e3%82%92%e5%87%ba%e5%8a%9b%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%ef%bc%9f\/","title":{"rendered":"log4j\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>log4j\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n<ol>\n<li>Maven\u3084Gradle\u306a\u3069\u306e\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001log4j\u306e\u95a2\u9023\u4f9d\u5b58\u95a2\u4fc2\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>log4j\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30ea\u30bd\u30fc\u30b9\u30d5\u30a9\u30eb\u30c0\u306b\u3001log4j.properties\u307e\u305f\u306flog4j.xml\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001log4j\u306e\u30ed\u30b0\u51fa\u529b\u30eb\u30fc\u30eb\u3084\u51fa\u529b\u5148\u3092\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>log4j\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30b3\u30fc\u30c9\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3001\u30ed\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u521d\u671f\u5316\u3057\u307e\u3059\u3002log4j\u3092\u521d\u671f\u5316\u3059\u308b\u305f\u3081\u306b\u306f\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\uff1a<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.log4j.Logger;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyClass<\/span> {\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">final<\/span> <span class=\"hljs-type\">Logger<\/span> <span class=\"hljs-variable\">logger<\/span> <span class=\"hljs-operator\">=<\/span> Logger.getLogger(MyClass.class);\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">myMethod<\/span><span class=\"hljs-params\">()<\/span> {\r\n        logger.debug(<span class=\"hljs-string\">\"Debug message\"<\/span>);\r\n        logger.info(<span class=\"hljs-string\">\"Info message\"<\/span>);\r\n        logger.warn(<span class=\"hljs-string\">\"Warning message\"<\/span>);\r\n        logger.error(<span class=\"hljs-string\">\"Error message\"<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u305f\u3081\u306b\u30ed\u30ac\u30fc\u3092\u30b3\u30fc\u30c9\u5185\u3067\u4f7f\u7528\u3057\u307e\u3059\u3002\u30ed\u30ac\u30fc\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u7570\u306a\u308b\u30e1\u30bd\u30c3\u30c9\uff08\u4f8b\uff1adebug\u3001info\u3001warn\u3001error\uff09\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30ec\u30d9\u30eb\u306e\u30ed\u30b0\u60c5\u5831\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/li>\n<li>log4j\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u3088\u3063\u3066\u6c7a\u307e\u3063\u305f\u30eb\u30fc\u30eb\u306b\u5f93\u3044\u3001\u30ed\u30b0\u306f\u30b3\u30f3\u30bd\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30eb\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306a\u3069\u6307\u5b9a\u3055\u308c\u305f\u5834\u6240\u306b\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u3054\u6ce8\u610f\uff1a<\/p>\n<ol>\n<li>log4j\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u3001\u30ed\u30b0\u30ec\u30d9\u30eb\u3084\u51fa\u529b\u5f62\u5f0f\u3001\u51fa\u529b\u4f4d\u7f6e\u306a\u3069\u306e\u60c5\u5831\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u901a\u5e38\uff0clogger\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30af\u30e9\u30b9\u306e\u5f62\u3067\u4f5c\u6210\u3055\u308c\u3001logger\u306e\u540d\u524d\u3068\u3057\u3066\u30af\u30e9\u30b9\u540d\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30ed\u30b0\u306e\u51fa\u6240\u3092\u3088\u308a\u7c21\u5358\u306b\u8b58\u5225\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>log4j\u3092\u4f7f\u7528\u3057\u3066\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a Maven\u3084Gradle\u306a\u3069\u306e\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3001log4j\u306e\u95a2\u9023\u4f9d\u5b58\u95a2\u4fc2\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 log4j\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-26666","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>log4j\u3067\u30ed\u30b0\u3092\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon 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