{"id":62347,"date":"2024-10-13T18:15:31","date_gmt":"2024-10-13T10:15:31","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62347\/"},"modified":"2024-10-13T18:15:31","modified_gmt":"2024-10-13T10:15:31","slug":"log4j%e6%95%b8%e6%93%9a%e5%ba%ab%e8%bc%b8%e5%87%ba%e5%af%a6%e7%8f%be%e6%8c%87%e5%8d%97-log4j%e8%bc%b8%e5%87%ba%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62347\/","title":{"rendered":"log4j\u6578\u64da\u5eab\u8f38\u51fa\u5be6\u73fe\u6307\u5357 (log4j\u8f38\u51fa\u5230\u6578\u64da\u5eab\u4e2d)"},"content":{"rendered":"<h1 id=\"log4j%e6%95%b8%e6%93%9a%e5%ba%ab%e8%bc%b8%e5%87%ba%e5%af%a6%e7%8f%be%e6%8c%87%e5%8d%97-SgnHbVjAaS\">log4j\u6578\u64da\u5eab\u8f38\u51fa\u5be6\u73fe\u6307\u5357<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\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\u5c07 log4j \u7684\u65e5\u8a8c\u8f38\u51fa\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u9032\u884c\u65e5\u8a8c\u7ba1\u7406\u548c\u67e5\u8a62\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5c07 log4j \u65e5\u8a8c\u8f38\u51fa\u5230\u6578\u64da\u5eab\u7684\u5177\u9ad4\u5be6\u73fe\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-SgnHbVjAaS\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u74b0\u5883\u5df2\u7d93\u6e96\u5099\u597d\uff1a<\/p>\n<ul>\n<li>Java \u958b\u767c\u74b0\u5883\uff08JDK 1.8 \u6216\u66f4\u9ad8\u7248\u672c\uff09<\/li>\n<li>Apache log4j 2.x<\/li>\n<li>\u4e00\u500b\u652f\u6301 JDBC \u7684\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL \u7b49\uff09<\/li>\n<li>\u76f8\u61c9\u7684 JDBC \u9a45\u52d5\u7a0b\u5e8f<\/li>\n<\/ul>\n<h2 id=\"2-%e6%b7%bb%e5%8a%a0%e4%be%9d%e8%b3%b4-SgnHbVjAaS\">2. \u6dfb\u52a0\u4f9d\u8cf4<\/h2>\n<p>\u5982\u679c\u60a8\u4f7f\u7528 Maven \u4f86\u7ba1\u7406\u9805\u76ee\u4f9d\u8cf4\uff0c\u8acb\u5728\u60a8\u7684 pom.xml \u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4f9d\u8cf4\uff1a<\/p>\n<pre><code>\n&lt;dependency&gt;\n    &lt;groupId&gt;org.apache.logging.log4j&lt;\/groupId&gt;\n    &lt;artifactId&gt;log4j-core&lt;\/artifactId&gt;\n    &lt;version&gt;2.x.x&lt;\/version&gt;\n&lt;\/dependency&gt;\n\n&lt;dependency&gt;\n    &lt;groupId&gt;org.apache.logging.log4j&lt;\/groupId&gt;\n    &lt;artifactId&gt;log4j-jdbc&lt;\/artifactId&gt;\n    &lt;version&gt;2.x.x&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.x.x&lt;\/version&gt;\n&lt;\/dependency&gt;\n<\/code><\/pre>\n<h2 id=\"3-%e9%85%8d%e7%bd%ae-log4j-SgnHbVjAaS\">3. \u914d\u7f6e log4j<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500b log4j \u914d\u7f6e\u6587\u4ef6\uff08\u5982 log4j2.xml\uff09\uff0c\u4e26\u914d\u7f6e JDBC Appender\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre><code>\n&lt;Configuration status=\"WARN\"&gt;\n    &lt;Appenders&gt;\n        &lt;JDBC name=\"DatabaseAppender\" tableName=\"logs\"&gt;\n            &lt;ConnectionFactory&gt;\n                &lt;Driver&gt;com.mysql.cj.jdbc.Driver&lt;\/Driver&gt;\n                &lt;URL&gt;jdbc:mysql:\/\/localhost:3306\/your_database&lt;\/URL&gt;\n                &lt;User&gt;your_username&lt;\/User&gt;\n                &lt;Password&gt;your_password&lt;\/Password&gt;\n            &lt;\/ConnectionFactory&gt;\n            &lt;Column name=\"time\" pattern=\"%d{yyyy-MM-dd HH:mm:ss.SSS}\" \/&gt;\n            &lt;Column name=\"level\" pattern=\"%p\" \/&gt;\n            &lt;Column name=\"logger\" pattern=\"%c\" \/&gt;\n            &lt;Column name=\"message\" pattern=\"%m\" \/&gt;\n        &lt;\/JDBC&gt;\n    &lt;\/Appenders&gt;\n    &lt;Loggers&gt;\n        &lt;Root level=\"info\"&gt;\n            &lt;AppenderRef ref=\"DatabaseAppender\"\/&gt;\n        &lt;\/Root&gt;\n    &lt;\/Loggers&gt;\n&lt;\/Configuration&gt;\n<\/code><\/pre>\n<h2 id=\"4-%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-SgnHbVjAaS\">4. \u5275\u5efa\u6578\u64da\u5eab\u8868<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u4e00\u500b\u8868\u4f86\u5b58\u5132\u65e5\u8a8c\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    time DATETIME,\n    level VARCHAR(10),\n    logger VARCHAR(255),\n    message TEXT\n);\n<\/code><\/pre>\n<h2 id=\"5-%e5%af%a6%e7%8f%be%e6%97%a5%e8%aa%8c%e8%a8%98%e9%8c%84-SgnHbVjAaS\">5. \u5be6\u73fe\u65e5\u8a8c\u8a18\u9304<\/h2>\n<p>\u5728\u60a8\u7684 Java \u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u8a18\u9304\u65e5\u8a8c\uff1a<\/p>\n<pre><code>\nimport org.apache.logging.log4j.LogManager;\nimport org.apache.logging.log4j.Logger;\n\npublic class LogExample {\n    private static final Logger logger = LogManager.getLogger(LogExample.class);\n\n    public static void main(String[] args) {\n        logger.info(\"\u9019\u662f\u4e00\u689d\u4fe1\u606f\u65e5\u8a8c\");\n        logger.error(\"\u9019\u662f\u4e00\u689d\u932f\u8aa4\u65e5\u8a8c\");\n    }\n}\n<\/code><\/pre>\n<h2 id=\"6-%e6%b8%ac%e8%a9%a6%e8%88%87%e9%a9%97%e8%ad%89-SgnHbVjAaS\">6. \u6e2c\u8a66\u8207\u9a57\u8b49<\/h2>\n<p>\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u4e26\u6aa2\u67e5\u6578\u64da\u5eab\u4e2d\u7684 logs \u8868\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u770b\u5230\u76f8\u61c9\u7684\u65e5\u8a8c\u8a18\u9304\u3002\u9019\u6a23\uff0c\u60a8\u5c31\u6210\u529f\u5730\u5c07 log4j \u65e5\u8a8c\u8f38\u51fa\u5230\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SgnHbVjAaS\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07 log4j \u65e5\u8a8c\u8f38\u51fa\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u5c0d\u65bc\u65e5\u8a8c\u7684\u96c6\u4e2d\u7ba1\u7406\u548c\u67e5\u8a62\u975e\u5e38\u6709\u5e6b\u52a9\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22log4j\u6578\u64da\u5eab\u8f38\u51fa\u5be6\u73fe\u6307\u5357\uff0c\u5b78\u7fd2\u5982\u4f55\u5c07\u65e5\u8a8c\u6578\u64da\u6709\u6548\u5730\u8f38\u51fa\u5230\u6578\u64da\u5eab\u4e2d\uff0c\u63d0\u5347\u65e5\u8a8c\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-62347","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=62347"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62347\/revisions"}],"predecessor-version":[{"id":62348,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62347\/revisions\/62348"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}