{"id":62345,"date":"2024-10-13T18:14:16","date_gmt":"2024-10-13T10:14:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62345\/"},"modified":"2024-10-13T18:14:16","modified_gmt":"2024-10-13T10:14:16","slug":"log4j%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e5%82%b3%e7%b5%b1%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-log4j%e9%85%8d%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62345\/","title":{"rendered":"log4j\u5982\u4f55\u914d\u7f6e\u50b3\u7d71\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff1f (log4j\u914d\u7f6e\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"log4j%e5%a6%82%e4%bd%95%e9%85%8d%e7%bd%ae%e5%82%b3%e7%b5%b1%e9%97%9c%e4%bf%82%e5%9e%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-FYURxRbdGQ\">log4j\u5982\u4f55\u914d\u7f6e\u50b3\u7d71\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u65e5\u8a8c\u8a18\u9304\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u90e8\u5206\u3002Apache log4j \u662f\u4e00\u500b\u6d41\u884c\u7684\u65e5\u8a8c\u8a18\u9304\u6846\u67b6\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc Java \u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5c07 log4j \u914d\u7f6e\u70ba\u5c07\u65e5\u8a8c\u4fe1\u606f\u5beb\u5165\u50b3\u7d71\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u5982 MySQL \u6216 PostgreSQL\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bd%9c%e7%82%ba%e6%97%a5%e8%aa%8c%e5%ad%98%e5%84%b2-FYURxRbdGQ\">\u70ba\u4ec0\u9ebc\u9078\u64c7\u6578\u64da\u5eab\u4f5c\u70ba\u65e5\u8a8c\u5b58\u5132<\/h2>\n<p>\u5c07\u65e5\u8a8c\u4fe1\u606f\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\u6709\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u96c6\u4e2d\u7ba1\u7406\uff1a<\/strong>\u6240\u6709\u65e5\u8a8c\u4fe1\u606f\u96c6\u4e2d\u5b58\u5132\uff0c\u4fbf\u65bc\u67e5\u8a62\u548c\u7ba1\u7406\u3002<\/li>\n<li><strong>\u6301\u4e45\u6027\uff1a<\/strong>\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u6301\u4e45\u6027\uff0c\u78ba\u4fdd\u65e5\u8a8c\u4e0d\u6703\u56e0\u61c9\u7528\u7a0b\u5e8f\u5d29\u6f70\u800c\u4e1f\u5931\u3002<\/li>\n<li><strong>\u67e5\u8a62\u80fd\u529b\uff1a<\/strong>\u53ef\u4ee5\u4f7f\u7528 SQL \u67e5\u8a62\u8a9e\u8a00\u8f15\u9b06\u6aa2\u7d22\u548c\u5206\u6790\u65e5\u8a8c\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"log4j-%e9%85%8d%e7%bd%ae%e6%ad%a5%e9%a9%9f-FYURxRbdGQ\">log4j \u914d\u7f6e\u6b65\u9a5f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u5c07 log4j \u914d\u7f6e\u70ba\u4f7f\u7528\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%b7%bb%e5%8a%a0%e4%be%9d%e8%b3%b4-FYURxRbdGQ\">1. \u6dfb\u52a0\u4f9d\u8cf4<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684\u9805\u76ee\u4e2d\u5305\u542b log4j \u548c JDBC \u9a45\u52d5\u7684\u4f9d\u8cf4\u3002\u5982\u679c\u4f60\u4f7f\u7528 Maven\uff0c\u53ef\u4ee5\u5728 pom.xml \u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8cf4\uff1a<\/p>\n<pre><code>\n&lt;dependency&gt;\n    &lt;groupId&gt;log4j&lt;\/groupId&gt;\n    &lt;artifactId&gt;log4j&lt;\/artifactId&gt;\n    &lt;version&gt;1.2.17&lt;\/version&gt;\n&lt;\/dependency&gt;\n\n&lt;dependency&gt;\n    &lt;groupId&gt;mysql&lt;\/groupId&gt;\n    &lt;artifactId&gt;mysql-connector-java&lt;\/artifactId&gt;\n    &lt;version&gt;8.0.23&lt;\/version&gt;\n&lt;\/dependency&gt;\n<\/code><\/pre>\n<h3 id=\"2-%e9%85%8d%e7%bd%ae-log4j-properties-FYURxRbdGQ\">2. \u914d\u7f6e log4j.properties<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u5275\u5efa\u6216\u7de8\u8f2f log4j.properties \u6587\u4ef6\uff0c\u914d\u7f6e\u6578\u64da\u5eab\u65e5\u8a8c\u8a18\u9304\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre><code>\nlog4j.rootLogger=DEBUG, DB\n\nlog4j.appender.DB=org.apache.log4j.jdbc.JDBCAppender\nlog4j.appender.DB.URL=jdbc:mysql:\/\/localhost:3306\/your_database\nlog4j.appender.DB.driver=com.mysql.cj.jdbc.Driver\nlog4j.appender.DB.user=your_username\nlog4j.appender.DB.password=your_password\nlog4j.appender.DB.sql=INSERT INTO logs (log_date, log_level, logger, message) VALUES (NOW(), '%p', '%c', '%m')\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u8acb\u6839\u64da\u4f60\u7684\u6578\u64da\u5eab\u8a2d\u7f6e\u66ff\u63db URL\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002sql \u5c6c\u6027\u5b9a\u7fa9\u4e86\u63d2\u5165\u65e5\u8a8c\u7684 SQL \u8a9e\u53e5\u3002<\/p>\n<h3 id=\"3-%e5%89%b5%e5%bb%ba%e6%97%a5%e8%aa%8c%e8%a1%a8-FYURxRbdGQ\">3. \u5275\u5efa\u65e5\u8a8c\u8868<\/h3>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u4e00\u500b\u8868\u4f86\u5b58\u5132\u65e5\u8a8c\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f MySQL \u7684\u793a\u4f8b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>\nCREATE TABLE logs (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    log_date DATETIME NOT NULL,\n    log_level VARCHAR(10) NOT NULL,\n    logger VARCHAR(255) NOT NULL,\n    message TEXT NOT NULL\n);\n<\/code><\/pre>\n<h3 id=\"4-%e6%b8%ac%e8%a9%a6%e9%85%8d%e7%bd%ae-FYURxRbdGQ\">4. \u6e2c\u8a66\u914d\u7f6e<\/h3>\n<p>\u5b8c\u6210\u914d\u7f6e\u5f8c\uff0c\u7de8\u5beb\u4e00\u500b\u7c21\u55ae\u7684 Java \u7a0b\u5e8f\u4f86\u6e2c\u8a66\u65e5\u8a8c\u8a18\u9304\uff1a<\/p>\n<pre><code>\nimport org.apache.log4j.Logger;\n\npublic class LogTest {\n    private static final Logger logger = Logger.getLogger(LogTest.class);\n\n    public static void main(String[] args) {\n        logger.debug(\"\u9019\u662f\u4e00\u689d\u8abf\u8a66\u4fe1\u606f\");\n        logger.info(\"\u9019\u662f\u4e00\u689d\u4fe1\u606f\");\n        logger.error(\"\u9019\u662f\u4e00\u689d\u932f\u8aa4\u4fe1\u606f\");\n    }\n}\n<\/code><\/pre>\n<p>\u904b\u884c\u8a72\u7a0b\u5e8f\u5f8c\uff0c\u6aa2\u67e5\u6578\u64da\u5eab\u4e2d\u7684 logs \u8868\uff0c\u61c9\u8a72\u80fd\u770b\u5230\u76f8\u61c9\u7684\u65e5\u8a8c\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-FYURxRbdGQ\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07 log4j 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