{"id":62035,"date":"2024-10-13T15:39:17","date_gmt":"2024-10-13T07:39:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62035\/"},"modified":"2024-10-13T15:39:17","modified_gmt":"2024-10-13T07:39:17","slug":"java%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e5%90%8c%e6%ad%a5%e7%9a%84%e6%ad%a5%e9%a9%9f%e7%b0%a1%e8%bf%b0-java%e5%b0%8d%e4%b8%80%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e5%90%8c%e6%ad%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62035\/","title":{"rendered":"Java\u5be6\u73fe\u6578\u64da\u5eab\u540c\u6b65\u7684\u6b65\u9a5f\u7c21\u8ff0 (java\u5c0d\u4e00\u500b\u6578\u64da\u5eab\u540c\u6b65)"},"content":{"rendered":"

Java\u5be6\u73fe\u6578\u64da\u5eab\u540c\u6b65\u7684\u6b65\u9a5f\u7c21\u8ff0<\/h1>\n

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\u6578\u64da\u5eab\u540c\u6b65\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

\u6578\u64da\u5eab\u540c\u6b65\u662f\u6307\u5c07\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u8207\u53e6\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u4fdd\u6301\u4e00\u81f4\u7684\u904e\u7a0b\u3002\u9019\u53ef\u4ee5\u662f\u55ae\u5411\u540c\u6b65\uff08\u5f9e\u4e00\u500b\u6578\u64da\u5eab\u5230\u53e6\u4e00\u500b\u6578\u64da\u5eab\uff09\u6216\u96d9\u5411\u540c\u6b65\uff08\u5169\u500b\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6578\u64da\u4e92\u76f8\u66f4\u65b0\uff09\u3002\u5728Java\u4e2d\uff0c\u5be6\u73fe\u6578\u64da\u5eab\u540c\u6b65\u901a\u5e38\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n

\u6b65\u9a5f\u4e00\uff1a\u9078\u64c7\u6578\u64da\u5eab<\/h2>\n

\u9996\u5148\uff0c\u60a8\u9700\u8981\u9078\u64c7\u8981\u540c\u6b65\u7684\u6578\u64da\u5eab\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u5305\u62ecMySQL\u3001PostgreSQL\u3001Oracle\u7b49\u3002\u78ba\u4fdd\u60a8\u5df2\u7d93\u5b89\u88dd\u4e86\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f\uff0c\u4ee5\u4fbfJava\u80fd\u5920\u8207\u6578\u64da\u5eab\u9032\u884c\u901a\u4fe1\u3002<\/p>\n

\u6b65\u9a5f\u4e8c\uff1a\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n

\u4f7f\u7528Java\u7684JDBC API\u4f86\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n

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            String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n            String user = \"your_username\";\n            String password = \"your_password\";\n            connection = DriverManager.getConnection(url, user, password);\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n
\u6b65\u9a5f\u4e09\uff1a\u63d0\u53d6\u6578\u64da<\/h2>\n
\u5728\u5efa\u7acb\u9023\u63a5\u5f8c\uff0c\u60a8\u9700\u8981\u5f9e\u6e90\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u3002\u9019\u53ef\u4ee5\u901a\u904e\u57f7\u884cSQL\u67e5\u8a62\u4f86\u5be6\u73fe\uff1a<\/p>\n
import java.sql.ResultSet;\nimport java.sql.Statement;\n\npublic class DataExtractor {\n    public static void extractData(Connection connection) {\n        try {\n            Statement statement = connection.createStatement();\n            String query = \"SELECT * FROM source_table\";\n            ResultSet resultSet = statement.executeQuery(query);\n            while (resultSet.next()) {\n                \/\/ \u63d0\u53d6\u6578\u64da\n                int id = resultSet.getInt(\"id\");\n                String name = resultSet.getString(\"name\");\n                \/\/ \u9032\u884c\u5f8c\u7e8c\u8655\u7406\n            }\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n
\u6b65\u9a5f\u56db\uff1a\u5c07\u6578\u64da\u63d2\u5165\u76ee\u6a19\u6578\u64da\u5eab<\/h2>\n
\u63d0\u53d6\u6578\u64da\u5f8c\uff0c\u60a8\u9700\u8981\u5c07\u5176\u63d2\u5165\u5230\u76ee\u6a19\u6578\u64da\u5eab\u4e2d\u3002\u9019\u540c\u6a23\u53ef\u4ee5\u901a\u904e\u57f7\u884cSQL\u63d2\u5165\u8a9e\u53e5\u4f86\u5be6\u73fe\uff1a<\/p>\n
public class DataInserter {\n    public static void insertData(Connection connection, int id, String name) {\n        try {\n            String insertQuery = \"INSERT INTO target_table (id, name) VALUES (?, ?)\";\n            PreparedStatement preparedStatement = connection.prepareStatement(insertQuery);\n            preparedStatement.setInt(1, id);\n            preparedStatement.setString(2, name);\n            preparedStatement.executeUpdate();\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n
\u6b65\u9a5f\u4e94\uff1a\u8655\u7406\u932f\u8aa4\u548c\u7570\u5e38<\/h2>\n
\u5728\u6578\u64da\u540c\u6b65\u904e\u7a0b\u4e2d\uff0c\u932f\u8aa4\u548c\u7570\u5e38\u662f\u4e0d\u53ef\u907f\u514d\u7684\u3002\u60a8\u9700\u8981\u8a2d\u8a08\u4e00\u500b\u932f\u8aa4\u8655\u7406\u6a5f\u5236\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u53ef\u4ee5\u4f7f\u7528try-catch\u584a\u4f86\u6355\u7372\u7570\u5e38\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u65e5\u8a8c\u8a18\u9304\u6216\u91cd\u8a66\u64cd\u4f5c\u3002<\/p>\n
\u6b65\u9a5f\u516d\uff1a\u5b9a\u671f\u57f7\u884c\u540c\u6b65\u4efb\u52d9<\/h2>\n
\u6700\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Java\u7684\u5b9a\u6642\u4efb\u52d9\u529f\u80fd\uff08\u5982ScheduledExecutorService\uff09\u4f86\u5b9a\u671f\u57f7\u884c\u6578\u64da\u540c\u6b65\u4efb\u52d9\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6578\u64da\u59cb\u7d42\u4fdd\u6301\u6700\u65b0\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Java\u5be6\u73fe\u6578\u64da\u5eab\u7684\u540c\u6b65\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u6578\u64da\u5b89\u5168\u6027\u7684\u61c9\u7528\u4f86\u8aaa\uff0c\u6578\u64da\u5eab\u540c\u6b65\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u540c\u6b65\u9700\u6c42\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u7dad\u8b77\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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