在Spring框架中有如下3種獲得DataSource對象的方法:
1.從JNDI獲得DataSource.
2.從第三方的連接池獲得DataSource.
3.使用DriverManagerDataSource獲得DataSource
1、SpringJNDI數據源配置信息：
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:comp/env/jcptDataSourceJNDI</value>
</property>
</bean>
jcptDataSourceJNDI是tomcat或者其他應用服務器配置的JNDI.
2、關於JNDI的配置(tomcat)：
修改tomcat目錄conf/context.xml文件：
<Resource name="jcptDataSourceJNDI" auth="Container" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="10" username="tysp"
password="12345678" driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@192.168.1.35:1521:orcl"/>
3、通過JNDI獲取DataSource:
Context context = new InitialContext();
DataSource ds = (DataSource)context.lookup("java:comp/env/jcptDataSourceJNDI");
使用DBCP連接池獲取
要在Spring中使用DBCP連接池，需要引入commons-collections.jar、commons-dbcp.jar和commons-pool.jar。
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
<property name="url" value="jdbc:oracle:thin:@192.168.1.35:1521:orcl"></property>
<property name="username" value="or_meal"></property>
<property name="password" value="or_meal"></property>
<property name="maxActive" value="100"></property>
<property name="maxIdle" value="30"></property>
<property name="maxWait" value="10"></property>
<property name="defaultAutoCommit" value="false"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect
</prop>
<prop key="show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
<property name="mappingResources">
<list></list>
</property>
</bean>