java怎么连接本地数据库

java通过JDBC连接数据库

public Connection getConnection(){ String url="jdbc:mysql://localhost:端口/数据库"; String userName="root"; String password="密码"; try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block System.out.println("找不到驱动！"); e.printStackTrace(); } try { conn=DriverManager.getConnection(url, userName, password); if(conn!=null){ System.out.println("connection successful"); } } catch (SQLException e) { // TODO Auto-generated catch block System.out.println( "connection fail"); e.printStackTrace(); } return conn; }