MySQL实现JDBC详细步骤

Class.forName("com.mysql.cj.jdbc.Driver");

String url = "jdbc:mysql://localhost:3306/db1";
Connection con = DriverManager.getConnection(url,"root","888888");

Statement stat = con.createStatement();

String sql = "SELECT * FROM user";
ResultSet rs = stat.executeQuery(sql);

while(rs.next()) {
    System.out.println( rs.getInt("id")
                + "\t" + rs.getString("name"));
}

con.close();
stat.close();
rs.close();

public class jdbc_demo01 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        // 1.导入jar包
        // 2.注册驱动
        Class.forName("com.mysql.cj.jdbc.Driver");
 
        // 3.获取连接
        String url = "jdbc:mysql://localhost:3306/db1";
        Connection con = DriverManager.getConnection(url,"root","888888");
        // 4.获取执行者对象
        Statement stat = con.createStatement();
        // 5.执行sql语句，并且接收结果
        String sql = "SELECT * FROM product";
        ResultSet rs = stat.executeQuery(sql);
        // 6.处理结果
        while(rs.next()) {
            System.out.println( rs.getInt("id") + "\t"
                    + rs.getString("name") + "\t"
                    + rs.getInt("price") + "\t"
                    + rs.getString("brand") + "\t"
                    + rs.getInt("stock")
            );
        }
        // 7。释放资源
        con.close();
        stat.close();
        rs.close();
    }
}