Spring框架中获得DataSource对象的方法(转)

在Spring框架中有如下3种获得DataSource对象的方法:

一、从JNDI获得DataSource

1.在tomcat服务器中的配置示例，在tomcat目录conf/context.xml文件中添加：

<Resource
     name="jdbc/writeDataSource"
     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"/>

2.在resin服务器中的配置示例,在resin目录conf/resin.xml文件中添加

  1:        <database jndi-name='jdbc/writeDataSource'>
  2:              <driver type="com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource">
  3:                    <url>jdbc:mysql://localhost:3306/yfhesuan?useUnicode=true&amp;characterEncoding=utf8&amp;zeroDateTimeBehavior=convertToNull</url>
  4:                    <user>root</user>
  5:                 <password>12345678</password>
  6:                </driver>
  7:                <prepared-statement-cache-size>8</prepared-statement-cache-size>
  8:              <max-connections>30</max-connections>
  9:              <max-idle-time>30s</max-idle-time>
 10:              <connection-wait-time>30000</connection-wait-time>
 11:              <transaction-timeout>30000</transaction-timeout>
 12:         </database>

3.SpringJNDI数据源配置信息

  <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
   <property name="jndiName">
    <value>java:comp/env/jdbc/writeDataSource</value>
   </property>
  </bean>

在赋值到value时必须加上"java:comp/env/"。

注意：记得要把数据库驱动的jar包丢到服务器的lib下。

二、从第三方的连接池获得DataSource

要在Spring中使用DBCP连接池，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>

三、使用DriverManagerDataSource获得DataSource

<bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName">
            <value>oracle.jdbc.driver.OracleDriver
            </value>
        </property>
        <property name="url">
            <value>jdbc:oracle:thin:@192.168.1.35:orcl
            </value>
        </property>
        <property name="username">
            <value>or_meal</value>
        </property>
        <property name="password">
            <value>or_meal</value>
        </property>
    </bean>

参考资料：http://www.oschina.net/code/snippet_117958_4699