util层

public class baseDao {
    public static Connection getConnections(){
        Connection con=null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
//            jdbc:mysql://localhost:3306/servletcrud
            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/servletcrud", "root", "root");
            System.out.println("获取到连接啦~");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return con;
    }
}

//笔记