我常用的数据库，记录下它们的连接语句，因为有时候会忘了！
MySql：
<property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost/databaseName</property> <property name="connection.username">root</property> <property name="connection.password">123</property>
Oracle：
<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property> <property name="connection.url">jdbc:oracle:thin:@localhost:1521:databaseName</property> <property name="connection.username">scott</property> <property name="connection.password">tiger</property>
