{"id":284,"date":"2005-12-31T18:00:16","date_gmt":"2005-12-31T09:00:16","guid":{"rendered":"http:\/\/www.javable.jp\/blog\/?p=284"},"modified":"2012-04-13T12:28:11","modified_gmt":"2012-04-13T03:28:11","slug":"log4j-%e3%81%a7%e3%83%ad%e3%82%b0%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e5%90%8d%e3%82%92%e5%8b%95%e7%9a%84%e3%81%ab%e5%a4%89%e6%9b%b4%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.javable.jp\/blog\/284.html","title":{"rendered":"Log4J \u3067\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u52d5\u7684\u306b\u5909\u66f4\u3059\u308b"},"content":{"rendered":"

\r\n\u4ee5\u524d\u53c2\u52a0\u3057\u3066\u3044\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u30d0\u30c3\u30c1\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u958b\u767a\u3059\u308b\u4e8b\u6848\u304c\u3042\u308a\u3001\r\n\u30ed\u30b0\u51fa\u529b\u306b\u306f Log4J<\/a> \u3092\u63a1\u7528\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002
\r\n\u3068\u3053\u308d\u304c\u3001\u5f8c\u4ed8\u3051\u3067\u30ed\u30b0\u51fa\u529b\u65b9\u5f0f\u304c\u6c7a\u307e\u308a^^;\r\n\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u30b5\u30fc\u30d0\u30fc\u306e\u74b0\u5883\u5909\u6570\u304b\u3089\u53d6\u5f97\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\r\n<\/p>\r\n

\r\n\u74b0\u5883\u5909\u6570\u304b\u3089\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97\u2026\u305d\u308c\u3050\u3089\u3044 Log4J \u306a\u3089\u7c21\u5358\u3060\u3088\u306d\u3001\u3068\u601d\u3044\u3064\u3064\u3084\u3063\u3066\u307f\u305f\u3089\u3001\u51fa\u6765\u307e\u305b\u3093\u3002\r\n\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u306f\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u8a18\u8ff0\u3055\u308c\u3066\u3044\u3066\u3001\u56fa\u5b9a\u306a\u306e\u3067\u3059\u2026\u3002\r\n<\/p>\r\n

\r\n\u3057\u304b\u3057\u3001Log4J \u306f\u7c21\u5358\u306b\u62e1\u5f35\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002
\r\n\u300c\u74b0\u5883\u5909\u6570\u304b\u3089\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97\u3059\u308b\u300d\u3068\u3044\u3046\u3088\u3046\u306a\u5834\u5408\u306b\u306f Appender \u3092\u81ea\u4f5c\u3059\u308c\u3070\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002\r\n<\/p>\r\n

\r\n\u4eca\u56de\u306e\u5834\u5408\u3001\u30d0\u30c3\u30c1\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u52d5\u4f5c\u74b0\u5883\u304c JRE 1.4 \u306a\u306e\u3067\u74b0\u5883\u5909\u6570\u304c\u53d6\u5f97\u3067\u304d\u306a\u3044\u4ef6\u3082\u8003\u616e\u3057\u3001\r\nJVM \u306e\u8d77\u52d5\u5f15\u6570\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97\u3059\u308b Appender \u3092\u81ea\u4f5c\u3057\u307e\u3057\u305f\u3002\r\n<\/p>\r\n\r\n

\u72ec\u81ea\u306e Appender \u30af\u30e9\u30b9<\/div>\r\n
\r\npackage<\/span> jp.javable.sample.log4j;\r\n\r\nimport<\/span> java.io.IOException;\r\n\r\nimport<\/span> org.apache.log4j.Layout;\r\nimport<\/span> org.apache.log4j.RollingFileAppender;\r\n\r\npublic<\/span> class<\/span> JavableFileAppender extends<\/span> RollingFileAppender {\r\n    \r\n    \/**\r\n     * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u3059\u3002\r\n     *\/<\/span>\r\n    public<\/span> JavableFileAppender() {\r\n        super<\/span>();\r\n        setFile(getFile());\r\n    }\r\n\r\n    \/**\r\n     * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u3059\u3002\r\n     * \r\n     * @param layout \u30ec\u30a4\u30a2\u30a6\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\r\n     * @param filename \u51fa\u529b\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\r\n     * @throws IOException IO\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u5834\u5408\r\n     *\/<\/span>\r\n    public<\/span> JavableFileAppender(Layout layout, String filename)\r\n            throws<\/span> IOException {\r\n        super<\/span>(layout, filename);\r\n        setFile(getFile());\r\n    }\r\n\r\n    \/**\r\n     * \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u3059\u3002\r\n     * \r\n     * @param layout \u30ec\u30a4\u30a2\u30a6\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\r\n     * @param filename \u51fa\u529b\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\r\n     * @param append \u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u306b\u8ffd\u8a18\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u30d5\u30e9\u30b0\r\n     * @throws IOException IO\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u5834\u5408\r\n     *\/<\/span>\r\n    public<\/span> JavableFileAppender(Layout layout, String filename, boolean append)\r\n            throws<\/span> IOException {\r\n        super<\/span>(layout, filename, append);\r\n        setFile(getFile());\r\n    }\r\n    \r\n    \r\n    \/**\r\n     * JVM \u306e\u8d77\u52d5\u5f15\u6570\uff08-Dlog.file.name\uff09\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<br\/>\r\n     * {@link FileAppender#getFile()}\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u307e\u3059\u3002\r\n     * \r\n     * @see org.apache.log4j.FileAppender#getFile()\r\n     *\/<\/span>\r\n    public<\/span> String getFile() {\r\n        String filename = System.getProperty(\"log.file.name\");\r\n        if<\/span> (filename == null) {\r\n            filename = super.getFile();\r\n        }\r\n        return<\/span> filename == null ? \"\" :  filename;\r\n    }\r\n}\r\n<\/pre>\r\n\r\n
Log4J \u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/div>\r\n
\r\n<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<!DOCTYPE log4j:configuration SYSTEM \"log4j.dtd\">\r\n<log4j:configuration<\/span> xmlns:log4j<\/span>=\"http:\/\/jakarta.apache.org\/log4j\/\">\r\n    \r\n    <appender<\/span> name<\/span>=\"Log4JFileAppender\"\r\n              class<\/span>=\"org.apache.log4j.RollingFileAppender\">\r\n        <param<\/span> name<\/span>=\"File\" value<\/span>=\"test1.log\"\/>\r\n        <param<\/span> name<\/span>=\"MaxFileSize\" value<\/span>=\"1MB\"\/>\r\n        <param<\/span> name<\/span>=\"MaxBackupIndex\" value<\/span>=\"10\"\/>\r\n        <layout<\/span> class<\/span>=\"org.apache.log4j.PatternLayout\">\r\n            <param<\/span> name<\/span>=\"ConversionPattern\"\r\n                    value<\/span>=\"%d{yyyy\/MM\/dd HH\\:mm\\:ss.SSS}[%-5p](%c{1}) %m%n\"\/>\r\n        <\/layout<\/span>>\r\n    <\/appender<\/span>>\r\n    \r\n    <appender<\/span> name<\/span>=\"SampleFileAppender\"\r\n              class<\/span>=\"jp.javable.sample.log4j.JavableFileAppender\">\r\n<!--        <param name=\"File\" value=\"test2.log\"\/> --><\/span>\r\n        <param<\/span> name<\/span>=\"MaxFileSize\" value<\/span>=\"1MB\"\/>\r\n        <param<\/span> name<\/span>=\"MaxBackupIndex\" value<\/span>=\"10\"\/>\r\n        <layout<\/span> class<\/span>=\"org.apache.log4j.PatternLayout\">\r\n            <param<\/span> name<\/span>=\"ConversionPattern\"\r\n                   value<\/span>=\"%d{yyyy\/MM\/dd HH\\:mm\\:ss.SSS}[%-5p](%c{1}) %m%n\"\/>\r\n        <\/layout<\/span>>\r\n    <\/appender<\/span>>\r\n\r\n    <logger<\/span> name<\/span>=\"jp.javable.sample.log4j\">\r\n        <level<\/span> value<\/span>=\"DEBUG\"\/>\r\n        <appender-ref<\/span> ref<\/span>=\"SampleFileAppender\"\/>\r\n    <\/logger<\/span>>\r\n    \r\n    <root<\/span>>\r\n        <level<\/span> value<\/span>=\"WARN\"\/>\r\n    <\/root<\/span>>\r\n\r\n<\/log4j:configuration<\/span>>\r\n<\/pre>\r\n\r\n
\u30c6\u30b9\u30c8\u7528\u306e\u30af\u30e9\u30b9<\/div>\r\n
\r\npackage<\/span> jp.javable.sample.log4j;\r\n\r\nimport<\/span> org.apache.log4j.Logger;\r\n\r\npublic<\/span> class<\/span> LogTest {\r\n    \r\n    private<\/span> static<\/span> Logger logger = Logger.getLogger(LogTest.class);\r\n    \r\n    public<\/span> static<\/span> void<\/span> main(String[] args) {\r\n        \/\/ \u8d77\u52d5\u5f15\u6570\u3067\u6307\u5b9a\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u540d\u3067\u51fa\u529b\u3055\u308c\u308c\u3070OK<\/span>\r\n        logger.debug(\"\u30c6\u30b9\u30c8\");\r\n    }\r\n}\r\n<\/pre>\r\n\r\n
\u5b9f\u884c\u4f8b<\/div>\r\n
\r\nH:\\temp> java -Dlog.file.name=sample.log \\(\u5b9f\u969b\u306f\u4e00\u884c)\r\n        -classpath classes;lib\\log4j-1.2.13.jar jp.javable.sample.log4j.LogTest\r\n<\/pre>\r\n\r\n
\r\n\u4e0a\u8a18\u306e\u3088\u3046\u306b\u5b9f\u884c\u3059\u308b\u3068\u3001\r\n\u5b9f\u884c\u3092\u884c\u3063\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b sample.log \u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u540d\u3067\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u307e\u3057\u305f\u3002\r\n<\/p>\r\n
\r\n\u4eca\u56de\u4f5c\u6210\u3057\u305f\u30af\u30e9\u30b9\u306f Log4J \u6a19\u6e96\u306e RollingFileAppender \u3092\u7d99\u627f\u3057\u3066 getFile() \u30e1\u30bd\u30c3\u30c9\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\u3057\u305f\u5f8c\u3001\r\n\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u518d\u8a2d\u5b9a\u3059\u308b\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3042\u308a\u307e\u3059\u3002
\r\n\u901a\u5e38\u306e RollingFileAppender \u3068\u540c\u3058\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3001\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u8a18\u8ff0\u305b\u305a\u306b\u3044\u308b\u3068\u3001\u8d77\u52d5\u5f15\u6570\u304b\u3089\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
\r\n<\/p>\r\n
\r\n\u4f5c\u6210\u3057\u305f\u30bd\u30fc\u30b9\u306f\u3053\u3061\u3089<\/a>\u3067\u3059\u3002\r\n<\/p>\r\n
\r\nLog4J \u306f\u3001\u7c21\u5358\u306b\u69d8\u3005\u306a\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u305d\u3046\u3067\u3059\u3002\r\n<\/p>\r\n\r\n","protected":false},"excerpt":{"rendered":"\u4ee5\u524d\u53c2\u52a0\u3057\u3066\u3044\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u30d0\u30c3\u30c1\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u958b\u767a\u3059\u308b\u4e8b\u6848\u304c\u3042\u308a\u3001 \u30ed\u30b0\u51fa\u529b\u306b\u306f Log4J \u3092\u63a1\u7528\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-284","post","type-post","status-publish","format-standard","hentry","category-programming"],"_links":{"self":[{"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/posts\/284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/comments?post=284"}],"version-history":[{"count":21,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/posts\/284\/revisions"}],"predecessor-version":[{"id":381,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/posts\/284\/revisions\/381"}],"wp:attachment":[{"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/media?parent=284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/categories?post=284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.javable.jp\/blog\/wp-json\/wp\/v2\/tags?post=284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}