docker部署的mysql默认密码如何查看

docker run --name mysql-container -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:latest

docker logs mysql-container

GENERATED ROOT PASSWORD: Ax3CPh2uZu&UShOstoob&ohQu

docker exec -it mysql-container mysql -u root -p

ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';

FLUSH PRIVILEGES;

import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;
import java.io.InputStream;
import java.io.IOException;
public class DatabaseConnection {
    public Connection getConnection() {
        Properties properties = new Properties();
        InputStream input = null;
        
        try {
            input = getClass().getResourceAsStream("/config.properties");
            properties.load(input);
            
            String url = properties.getProperty("db.url");
            String username = properties.getProperty("db.username");
            String password = properties.getProperty("db.password");
            // 加载数据库驱动
            Class.forName("com.mysql.cj.jdbc.Driver");
            
            // 连接数据库
            Connection connection = DriverManager.getConnection(url, username, password);
            return connection;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            if (input != null) {
                try {
                    input.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
    public static void main(String[] args) {
        DatabaseConnection dbConnection = new DatabaseConnection();
        Connection connection = dbConnection.getConnection();
        
        if (connection != null) {
            System.out.println("成功连接到数据库！");
            // 在这里可以执行数据库操作
        } else {
            System.out.println("连接失败！");
        }
    }
}