JDBC 事务：确保数据库操作一致性和完整性的关键 - 代码示例

JDBC\u6587\u4ef6\u662f\u4e00\u79cd\u673a\u5236\uff0c\u7528\u4e8e\u4fdd\u8bc1\u4e00\u7ec4\u6570\u636e\u5e93\u64cd\u4f5c\u540c\u65f6\u6210\u529f\u6216\u8005\u540c\u65f6\u5931\u8d25\u3002\u4ea4\u6613\u53ef\u4ee5\u7528\u4e8e\u4fdd\u6301\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5e76\u9632\u6b62\u6570\u636e\u635f\u574f\u3002\n\n\u5728\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u6267\u884c\u4ea4\u6613\uff1a\n\n1\uff0e\u5f00\u542f\u8fde\u63a5\uff1a\u4f7f\u7528\u7c7b\u7684\u65b9\u6cd5\u5f00\u542f\u6570\u636e\u5e93\u8fde\u63a5\u3002\n\n2\uff0e\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\uff1a\u4f7f\u7528\u7c7b\u7684\u65b9\u6cd5\u5c06\u81ea\u52a8\u63d0\u4ea4\u8bbe\u7f6e\u4e3a\uff0c\u8fd9\u6837\u53ef\u4ee5\u624b\u52a8\u63a7\u5236\u4ea4\u6613\u7684\u63d0\u4ea4\u548c\u56de\u6eda\u3002\n\n3\uff0e\u6267\u884c\u64cd\u4f5c\uff1a\u4f7f\u7528\u5bf9\u8c61\u7684\u6216\u65b9\u6cd5\u521b\u5efa\u6216\u5bf9\u8c61\uff0c\u5e76\u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c\u3002\n\n4\uff0e\u63d0\u4ea4\u4ea4\u6613\uff1a\u5982\u679c\u6240\u6709\u64cd\u4f5c\u90fd\u6210\u529f\uff0c\u4f7f\u7528\u5bf9\u8c61\u7684\u65b9\u6cd5\u63d0\u4ea4\u4ea4\u6613\u3002\n\n5\uff0e\u56de\u6eda\u4ea4\u6613\uff1a\u5982\u679c\u4efb\u4f55\u64cd\u4f5c\u5931\u8d25\u6216\u8005\u51fa\u73b0\u5f02\u5e38\uff0c\u4f7f\u7528\u5bf9\u8c61\u7684\u65b9\u6cd5\u56de\u6eda\u4ea4\u6613\u3002\n\n6\uff0e\u5173\u95ed\u8fde\u63a5\uff1a\u4f7f\u7528\u5bf9\u8c61\u7684\u65b9\u6cd5\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u3002\n\n\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u4ea4\u6613\u7684\u793a\u4f8b\uff1a\n\njava\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class JDBCTransactionExample {\n public static void main(String[] args) {\n Connection connection = null;\n Statement statement = null;\n \n try {\n // \u5f00\u542f\u8fde\u63a5\n connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "username", "password");\n \n // \u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\n connection.setAutoCommit(false);\n \n // \u6267\u884c\u64cd\u4f5c\n statement = connection.createStatement();\n statement.executeUpdate("INSERT INTO users (id, name) VALUES (1, 'John')");\n statement.executeUpdate("INSERT INTO users (id, name) VALUES (2, 'Jane')");\n \n // \u63d0\u4ea4\u4ea4\u6613\n connection.commit();\n } catch (SQLException e) {\n // \u56de\u6eda\u4ea4\u6613\n try {\n if (connection != null) {\n connection.rollback();\n }\n } catch (SQLException ex) {\n ex.printStackTrace();\n }\n \n e.printStackTrace();\n } finally {\n // \u5173\u95ed\u8fde\u63a5\n try {\n if (statement != null) {\n statement.close();\n }\n if (connection != null) {\n connection.close();\n }\n } catch (SQLException e) {\n e.printStackTrace();\n }\n }\n }\n}\n\n\n\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u4e24\u4e2a\u8bed\u53e5\u5c06\u5728\u540c\u4e00\u4ea4\u6613\u4e2d\u6267\u884c\u3002\u5982\u679c\u4efb\u4f55\u4e00\u4e2a\u8bed\u53e5\u5931\u8d25\uff0c\u4ea4\u6613\u5c06\u88ab\u56de\u6eda\uff0c\u5e76\u4e14\u4e24\u4e2a\u64cd\u4f5c\u90fd\u4e0d\u4f1a\u751f\u6548\u3002\u53ea\u6709\u5f53\u4e24\u4e2a\u8bed\u53e5\u90fd\u6210\u529f\u65f6\uff0c\u4ea4\u6613\u624d\u4f1a\u88ab\u63d0\u4ea4\u3002