mysql数据库连接源代码

import java.sql.*;

public class MySQLConnectionExample {
    public static void main(String[] args) {
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        try {
            // 加载MySQL JDBC驱动
            Class.forName("com.mysql.jdbc.Driver");

            // 创建数据库连接
            String url = "jdbc:mysql://localhost:3306/mydatabase";
            String username = "root";
            String password = "password";
            connection = DriverManager.getConnection(url, username, password);

            // 创建SQL语句执行器
            statement = connection.createStatement();

            // 执行SQL查询
            String sql = "SELECT * FROM customers";
            resultSet = statement.executeQuery(sql);

            // 处理查询结果
            while (resultSet.next()) {
                String name = resultSet.getString("name");
                String email = resultSet.getString("email");
                System.out.println("Name: " + name + ", Email: " + email);
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            try {
                if (resultSet != null) resultSet.close();
                if (statement != null) statement.close();
                if (connection != null) connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}