{"id":62093,"date":"2024-10-13T16:07:18","date_gmt":"2024-10-13T08:07:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62093\/"},"modified":"2024-10-13T16:07:18","modified_gmt":"2024-10-13T08:07:18","slug":"java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%ab%e5%85%a5%e6%93%8d%e4%bd%9c%e8%a9%b3%e8%a7%a3-java%e5%a6%82%e4%bd%95%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62093\/","title":{"rendered":"Java\u6578\u64da\u5eab\u5beb\u5165\u64cd\u4f5c\u8a73\u89e3 (java\u5982\u4f55\u5beb\u5165\u6578\u64da\u5230\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%ab%e5%85%a5%e6%93%8d%e4%bd%9c%e8%a9%b3%e8%a7%a3-java%e5%a6%82%e4%bd%95%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-AjIwgjqlvf\">Java\u6578\u64da\u5eab\u5beb\u5165\u64cd\u4f5c\u8a73\u89e3 (Java\u5982\u4f55\u5beb\u5165\u6578\u64da\u5230\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\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\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728Java\u4e2d\u57f7\u884c\u6578\u64da\u5eab\u5beb\u5165\u64cd\u4f5c\uff0c\u5305\u62ec\u6240\u9700\u7684\u6b65\u9a5f\u3001\u4ee3\u78bc\u793a\u4f8b\u4ee5\u53ca\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-AjIwgjqlvf\">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\u95dc\u4fc2\u578b\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-AjIwgjqlvf\">2. \u9023\u63a5\u6578\u64da\u5eab<\/h2>\n<p>\u5728Java\u4e2d\uff0c\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        } catch (ClassNotFoundException | SQLException e) {\n            e.printStackTrace();\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<h2 id=\"3-%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a-AjIwgjqlvf\">3. \u5beb\u5165\u6578\u64da<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u5beb\u5165\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u63d2\u5165\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.PreparedStatement;\nimport java.sql.SQLException;\n\npublic class InsertData {\n    public static void insertRecord(String name, int age) {\n        String sql = \"INSERT INTO users (name, age) VALUES (?, ?)\";\n        try (Connection connection = DatabaseConnection.connect();\n             PreparedStatement preparedStatement = connection.prepareStatement(sql)) {\n            preparedStatement.setString(1, name);\n            preparedStatement.setInt(2, age);\n            preparedStatement.executeUpdate();\n            System.out.println(\"\u6578\u64da\u63d2\u5165\u6210\u529f\uff01\");\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86-AjIwgjqlvf\">4. \u4f7f\u7528\u4e8b\u52d9\u7ba1\u7406<\/h2>\n<p>\u5728\u9032\u884c\u591a\u500b\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528\u4e8b\u52d9\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>public class TransactionExample {\n    public static void performTransaction() {\n        String sql1 = \"INSERT INTO users (name, age) VALUES (?, ?)\";\n        String sql2 = \"INSERT INTO orders (user_id, product) VALUES (?, ?)\";\n        \n        try (Connection connection = DatabaseConnection.connect()) {\n            connection.setAutoCommit(false); \/\/ \u958b\u59cb\u4e8b\u52d9\n            \n            try (PreparedStatement pstmt1 = connection.prepareStatement(sql1);\n                 PreparedStatement pstmt2 = connection.prepareStatement(sql2)) {\n                pstmt1.setString(1, \"Alice\");\n                pstmt1.setInt(2, 30);\n                pstmt1.executeUpdate();\n                \n                pstmt2.setInt(1, 1); \/\/ \u5047\u8a2d\u7528\u6236ID\u70ba1\n                pstmt2.setString(2, \"Laptop\");\n                pstmt2.executeUpdate();\n                \n                connection.commit(); \/\/ \u63d0\u4ea4\u4e8b\u52d9\n                System.out.println(\"\u4e8b\u52d9\u6210\u529f\u57f7\u884c\uff01\");\n            } catch (SQLException e) {\n                connection.rollback(); \/\/ \u56de\u6efe\u4e8b\u52d9\n                e.printStackTrace();\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"5-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-AjIwgjqlvf\">5. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u9023\u63a5\u7684\u5b89\u5168\u6027\uff0c\u907f\u514dSQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u4f7f\u7528PreparedStatement\u4f86\u57f7\u884cSQL\u8a9e\u53e5\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002<\/li>\n<li>\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\uff0c\u52d9\u5fc5\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-AjIwgjqlvf\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u5728Java\u4e2d\u9032\u884c\u6578\u64da\u5eab\u5beb\u5165\u64cd\u4f5c\uff0c\u5305\u62ec\u9023\u63a5\u6578\u64da\u5eab\u3001\u63d2\u5165\u6578\u64da\u3001\u4f7f\u7528\u4e8b\u52d9\u7ba1\u7406\u7b49\u6b65\u9a5f\u3002\u9019\u4e9b\u57fa\u672c\u64cd\u4f5c\u662f\u958b\u767c\u6578\u64da\u9a45\u52d5\u61c9\u7528\u7a0b\u5e8f\u7684\u57fa\u790e\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\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\u90e8\u7f72\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u78ba\u4fdd\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u548c\u5b58\u5132\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0eJava\u6578\u64da\u5eab\u5beb\u5165\u64cd\u4f5c\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u5c07\u6578\u64da\u5beb\u5165\u6578\u64da\u5eab\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\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-62093","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62093","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=62093"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62093\/revisions"}],"predecessor-version":[{"id":62094,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62093\/revisions\/62094"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}