Spring配置DataSource的四种方式
1. Spring DataSource
2. DBCP DataSource
3. C3P0 DataSource
4. JNDI DataSource

1. Spring DataSource

<bean id="dataSource"value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://127.0.0.1:3306/txazo" /><property name="username" value="root" /><property name="password" value="root" /></bean>

2. DBCP DataSource

<bean id="dataSource" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://127.0.0.1:3306/txazo" /><property name="username" value="root" /><property name="password" value="root" /></bean>

3. C3P0 DataSource

<bean id="dataSource" value="com.mysql.jdbc.Driver" /><property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/txazo" /><property name="user" value="root" /><property name="password" value="root" /></bean>

4. JNDI DataSource

<bean id="dataSource" value="java:comp/env/jdbc/txazo" /></bean>