{"id":61993,"date":"2024-10-13T15:22:15","date_gmt":"2024-10-13T07:22:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61993\/"},"modified":"2024-10-13T15:22:15","modified_gmt":"2024-10-13T07:22:15","slug":"java%e5%a6%82%e4%bd%95%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%a6%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-java%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61993\/","title":{"rendered":"Java\u5982\u4f55\u9023\u63a5\u6578\u64da\u5eab\u4e26\u9032\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c (java\u6578\u64da\u5eab\u9023\u63a5\u522a\u9664)"},"content":{"rendered":"<h1 id=\"java%e5%a6%82%e4%bd%95%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%a6%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-eEcndhxMzL\">Java\u5982\u4f55\u9023\u63a5\u6578\u64da\u5eab\u4e26\u9032\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u7d93\u5e38\u88ab\u7528\u65bc\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Java\u9023\u63a5\u6578\u64da\u5eab\u4e26\u57f7\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u904e\u7a0b\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-eEcndhxMzL\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u4ee5\u4e0b\u74b0\u5883\uff1a<\/p>\n<ul>\n<li>Java Development Kit (JDK)<\/li>\n<li>\u4e00\u500b\u652f\u6301\u7684\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\u7b49\uff09<\/li>\n<li>\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f<\/li>\n<\/ul>\n<h2 id=\"2-%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-eEcndhxMzL\">2. \u9023\u63a5\u6578\u64da\u5eab<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u4f7f\u7528JDBC\uff08Java Database Connectivity\uff09\u4f86\u9023\u63a5\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static Connection connect() {\n        Connection connection = null;\n        try {\n            \/\/ \u52a0\u8f09JDBC\u9a45\u52d5\n            Class.forName(\"com.mysql.cj.jdbc.Driver\");\n            \/\/ \u5efa\u7acb\u9023\u63a5\n            connection = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/your_database\", \"username\", \"password\");\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n        } catch (ClassNotFoundException | SQLException e) {\n            e.printStackTrace();\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u8acb\u5c07`your_database`\u3001`username`\u548c`password`\u66ff\u63db\u70ba\u60a8\u7684\u6578\u64da\u5eab\u540d\u7a31\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002<\/p>\n<h2 id=\"3-%e5%9f%b7%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-eEcndhxMzL\">3. \u57f7\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u60a8\u5c31\u53ef\u4ee5\u57f7\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u522a\u9664\u7279\u5b9a\u689d\u4ef6\u4e0b\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class DeleteData {\n    public static void deleteRecord(int id) {\n        String sql = \"DELETE FROM your_table WHERE id = ?\";\n        try (Connection connection = DatabaseConnection.connect();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql)) {\n            preparedStatement.setInt(1, id);\n            int rowsAffected = preparedStatement.executeUpdate();\n            System.out.println(\"\u522a\u9664\u7684\u884c\u6578: \" + rowsAffected);\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c`your_table`\u61c9\u66ff\u63db\u70ba\u60a8\u8981\u522a\u9664\u6578\u64da\u7684\u8868\u540d\u3002`id`\u662f\u60a8\u5e0c\u671b\u522a\u9664\u7684\u8a18\u9304\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002<\/p>\n<h2 id=\"4-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-eEcndhxMzL\">4. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u8acb\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5728\u522a\u9664\u6578\u64da\u4e4b\u524d\u5099\u4efd\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528PreparedStatement\u53ef\u4ee5\u6709\u6548\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u5728\u522a\u9664\u64cd\u4f5c\u5f8c\uff0c\u6aa2\u67e5\u8fd4\u56de\u7684\u884c\u6578\u4ee5\u78ba\u8a8d\u64cd\u4f5c\u662f\u5426\u6210\u529f\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%b8%bd%e7%b5%90-eEcndhxMzL\">5. \u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528Java\u9023\u63a5\u6578\u64da\u5eab\u4e26\u57f7\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c\u3002\u901a\u904e\u6b63\u78ba\u7684\u9023\u63a5\u548c\u64cd\u4f5c\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Java\u9023\u63a5\u6578\u64da\u5eab\u4e26\u57f7\u884c\u6578\u64da\u522a\u9664\u64cd\u4f5c\uff0c\u638c\u63e1SQL\u8a9e\u53e5\u548cJDBC\u6280\u8853\u7684\u5be6\u7528\u6280\u5de7\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-61993","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61993","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=61993"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61993\/revisions"}],"predecessor-version":[{"id":61994,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61993\/revisions\/61994"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61993"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}