java 获取mysql表结构

import java.sql.*;

public class GetTableStructure {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            DatabaseMetaData metaData = conn.getMetaData();
            ResultSet resultSet = metaData.getColumns(null, null, "mytable", null);

            while (resultSet.next()) {
                String columnName = resultSet.getString("COLUMN_NAME");
                String dataType = resultSet.getString("TYPE_NAME");
                int columnSize = resultSet.getInt("COLUMN_SIZE");
                System.out.println("Column Name: " + columnName);
                System.out.println("Data Type: " + dataType);
                System.out.println("Column Size: " + columnSize);
                System.out.println("-----------------------------");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}