java mysql数据迁移

import java.sql.*;

public class DataMigration {
    public static void main(String[] args) {
        String sourceUrl = "jdbc:mysql://source_host:3306/source_db";
        String targetUrl = "jdbc:mysql://target_host:3306/target_db";
        String username = "your_username";
        String password = "your_password";

        try (Connection sourceConn = DriverManager.getConnection(sourceUrl, username, password);
             Connection targetConn = DriverManager.getConnection(targetUrl, username, password)) {

            // 获取源数据库的表结构
            DatabaseMetaData metaData = sourceConn.getMetaData();
            ResultSet tables = metaData.getTables(null, null, "%", new String[]{"TABLE"});
            while (tables.next()) {
                String tableName = tables.getString("TABLE_NAME");
                // 导出表数据
                exportTableData(sourceConn, tableName);
                // 导入表数据到目标数据库
                importTableData(targetConn, tableName);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    private static void exportTableData(Connection conn, String tableName) throws SQLException {
        String query = "SELECT * FROM " + tableName;
        try (Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery(query)) {
            // 处理结果集并导出数据
            // ...
        }
    }

    private static void importTableData(Connection conn, String tableName) throws SQLException {
        // 导入数据到目标数据库
        // ...
    }
}