{"id":61963,"date":"2024-10-13T15:06:16","date_gmt":"2024-10-13T07:06:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61963\/"},"modified":"2024-10-13T15:06:16","modified_gmt":"2024-10-13T07:06:16","slug":"java%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-java%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9b%b4%e6%96%b0%e5%91%bd%e4%bb%a4%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61963\/","title":{"rendered":"Java\u547d\u4ee4\u884c\u66f4\u65b0\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357 (java\u6578\u64da\u5eab\u66f4\u65b0\u547d\u4ee4\u884c)"},"content":{"rendered":"<h1 id=\"java%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-SIVUZmbhsp\">Java\u547d\u4ee4\u884c\u66f4\u65b0\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u66f4\u65b0\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u901a\u904e\u547d\u4ee4\u884c\u4f7f\u7528Java\u4f86\u66f4\u65b0\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"%e6%ba%96%e5%82%99%e5%b7%a5%e4%bd%9c-SIVUZmbhsp\">\u6e96\u5099\u5de5\u4f5c<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5df2\u5b89\u88ddJava\u958b\u767c\u5de5\u5177\u5305\uff08JDK\uff09\u3002<\/li>\n<li>\u5df2\u5b89\u88dd\u4e26\u914d\u7f6e\u597d\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\u7b49\uff09\u3002<\/li>\n<li>\u5df2\u7d93\u5275\u5efa\u4e86\u6578\u64da\u5eab\u548c\u76f8\u61c9\u7684\u8868\u683c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bb%ba%e7%ab%8bjava%e9%a0%85%e7%9b%ae-SIVUZmbhsp\">\u5efa\u7acbJava\u9805\u76ee<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500bJava\u9805\u76ee\u3002\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55IDE\uff08\u5982Eclipse\u3001IntelliJ IDEA\uff09\u6216\u7c21\u55ae\u7684\u6587\u672c\u7de8\u8f2f\u5668\u4f86\u7de8\u5bebJava\u4ee3\u78bc\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Java\u985e\uff0c\u7528\u65bc\u66f4\u65b0\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class DatabaseUpdater {\n    private static final String URL = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n    private static final String USER = \"your_username\";\n    private static final String PASSWORD = \"your_password\";\n\n    public static void main(String[] args) {\n        Connection connection = null;\n        PreparedStatement preparedStatement = null;\n\n        try {\n            \/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\n            connection = DriverManager.getConnection(URL, USER, PASSWORD);\n            String sql = \"UPDATE your_table SET column_name = ? WHERE condition_column = ?\";\n            preparedStatement = connection.prepareStatement(sql);\n            preparedStatement.setString(1, \"new_value\");\n            preparedStatement.setInt(2, 1); \/\/ \u5047\u8a2d\u689d\u4ef6\u662fID\u70ba1\u7684\u884c\n\n            \/\/ \u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\n            int rowsAffected = preparedStatement.executeUpdate();\n            System.out.println(\"\u66f4\u65b0\u4e86 \" + rowsAffected + \" \u884c\u3002\");\n        } catch (SQLException e) {\n            e.printStackTrace();\n        } finally {\n            try {\n                if (preparedStatement != null) preparedStatement.close();\n                if (connection != null) connection.close();\n            } catch (SQLException e) {\n                e.printStackTrace();\n            }\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b7%a8%e8%ad%af%e5%92%8c%e9%81%8b%e8%a1%8cjava%e7%a8%8b%e5%ba%8f-SIVUZmbhsp\">\u7de8\u8b6f\u548c\u904b\u884cJava\u7a0b\u5e8f<\/h2>\n<p>\u5c07\u4e0a\u8ff0\u4ee3\u78bc\u4fdd\u5b58\u70ba <code>DatabaseUpdater.java<\/code>\u3002\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5728\u547d\u4ee4\u884c\u4e2d\u7de8\u8b6f\u548c\u904b\u884c\u9019\u500b\u7a0b\u5e8f\u3002\u8acb\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u64cd\u4f5c\uff1a<\/p>\n<ol>\n<li>\u6253\u958b\u547d\u4ee4\u884c\u754c\u9762\uff0c\u5c0e\u822a\u5230\u4fdd\u5b58Java\u6587\u4ef6\u7684\u76ee\u9304\u3002<\/li>\n<li>\u7de8\u8b6fJava\u6587\u4ef6\uff1a<\/li>\n<pre><code>javac DatabaseUpdater.java<\/code><\/pre>\n<li>\u904b\u884c\u7de8\u8b6f\u5f8c\u7684Java\u7a0b\u5e8f\uff1a<\/li>\n<pre><code>java DatabaseUpdater<\/code><\/pre>\n<\/ol>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-SIVUZmbhsp\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u5eab\u66f4\u65b0\u6642\uff0c\u8acb\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fddSQL\u8a9e\u53e5\u7684\u6b63\u78ba\u6027\uff0c\u4ee5\u907f\u514d\u8a9e\u6cd5\u932f\u8aa4\u3002<\/li>\n<li>\u5728\u57f7\u884c\u66f4\u65b0\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>\u4f7f\u7528PreparedStatement\u53ef\u4ee5\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SIVUZmbhsp\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u547d\u4ee4\u884c\u4f7f\u7528Java\u66f4\u65b0\u6578\u64da\u5eab\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u5e7e\u884c\u4ee3\u78bc\u5373\u53ef\u5b8c\u6210\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u9ad8\u6548\uff0c\u800c\u4e14\u9748\u6d3b\uff0c\u9069\u5408\u5404\u7a2e\u61c9\u7528\u5834\u666f\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u74b0\u5883\u4f86\u904b\u884c\u60a8\u7684Java\u61c9\u7528\u7a0b\u5e8f\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u9806\u5229\u9032\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Java\u547d\u4ee4\u884c\u6709\u6548\u66f4\u65b0\u6578\u64da\u5eab\uff0c\u638c\u63e1\u95dc\u9375\u6b65\u9a5f\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\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-61963","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61963","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=61963"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61963\/revisions"}],"predecessor-version":[{"id":61964,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61963\/revisions\/61964"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}