浅谈Mysql的几种常见注册连接(附带配置文件)

方式一

基本

Class.forName(“com.mysql.jdbc.Driver”);

String url = “jdbc:mysql:///localhost:3306/demo”;

String username = “root”;

String password = “root”;

Connection connection = DriverManager.getConnection(url, username, password);

方式二

比如使用一个常见的c3po连接池的

ComboPooledDataSource dataSource = new ComboPooledDataSource();

dataSource.setDriverClass(“com.mysql.jdbc.Driver”);

dataSource.setJdbcUrl(“jdbc:mysql:///demo”);

dataSource.setUser(“root”);

dataSource.setPassword(“root”);

方式三带propertise文件

例如文件为:dataSource.propertise,放在src下

文件内容都为键值对

driverClass=com.mysql.jdbc.Driver

ur1=jdbc:mysql://localhost:3306/mybase

user=root

password=root

InputStream is = getClass().getClassLoader().getResourceAsStream(“dataSource.propertise”);

Properties properties = new Properties();

properties.load(is);

String driverClass = properties.getProperty(“driverClass”);

String url = properties.getProperty(“url”);

String username = properties.getProperty(“username”);

String password = properties.getProperty(“password”);

Class.forName(driverClass);

Connection connection = DriverManager.getConnection(url, username, password);

方式四带xml文件

文件内容为