Spring中几种数据源的配置

 

spring配置DataSource(数据源的几种方式):
数据源可以注入到sessionFactory中。


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:jee="http://www.springframework.org/schema/jee"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-2.5.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
      http://www.springframework.org/schema/jee       
      http://www.springframework.org/schema/jee/spring-jee-2.5.xsd"
 >

 ============================================spring自身提供的数据源
<!-- 配置数据源(Spring自身提供
 的数据源DriverManagerDataSourc)
实现类DriverManagerDataSource,它实现了javax.sql.DataSource接口)
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">          
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />         
    <property name="url" value="jdbc:oracle:thin:@localhost:1521:summer" />         
    <property name="username" value="xiaoxiao" />         
    <property name="password" value="xiaoxiao" />         
</bean>  
-->

 ============================================C3P0数据源
<!-- 配置C3P0数据源
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"          
        destroy-method="close">         
  <property name="driverClass" value="oracle.jdbc.driver.OracleDriver" />         
    <property name="jdbcUrl" value="jdbc:oracle:thin:@localhost:1521:summer" />         
    <property name="user" value="xiaoxiao" />         
    <property name="password" value="xiaoxiao" />              
</bean>  
 -->

 ============================================DBCP数据源
<!--  配置DBCP数据源 
需要包括/lib/jakarta- commons/commons-pool.jar
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"          
        destroy-method="close">         
    <property name="driverClassName" value="${jdbc.driverClassName}" />         
    <property name="url" value="${jdbc.url}" />         
    <property name="username" value="${jdbc.username}" />         
    <property name="password" value="${jdbc.password}" />         
</bean>  
  -->

  =========================================================指定数据源配置文件(jdbc.properties)的位置
  有两种方式指定properties文件位置:

 <!------------------------------方式一、 指定数据源配置文件的位置
 <bean id="propertyConfigurer"        
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">         
    <property name="location" value="classpath:jdbc.properties"/>         
</bean> 
 -->
 
 <!------------------------------方式二、 配置文件的位置 ,可配置多个
<context:property-placeholder
       location="classpath:jdbc.properties,classpath:user.properties"/>
-->
===================================================================================引用配置文件的属性值${}
示例如下:
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">          
    <property name="driverClassName" value="${jdbc.driverClassName}" />         
    <property name="url" value="${jdbc.url}" />         
    <property name="username" value="${jdbc.username}" />         
    <property name="password" value="${jdbc.password}" />         
</bean>

 
======================================================== JNDI 连接池配置

  注意:拷贝数据库驱动包ojdbc.jar 到tomcat的lib目录下

======================================================== 1、context.xml配置:

1、在tomcat conf-->context.xml中配置:
<context>
<Resource name="jdbc/test"   --jndi的名称,随便命名,但后面都要与它一致
   auth="Container"
   type="javax.sql.DataSource"
   driverClassName="oracle.jdbc.driver.OracleDriver"
   url="jdbc:oracle:thin:@localhost:1521:summer"
   username="xiaoxiao" password="xiaoxiao"
   maxActive="20" maxIdle="10"/>
</context>
======================================================== 2、web.xml配置:
2、项目里的web.xml配置:
 <resource-ref>
  <description>test  DataSource</description>
  <res-ref-name>jdbc/test</res-ref-name>   -- JNDI名称,同上
  <res-type>javax.sql.DataSource</res-type>   --- 类型 同上
  <res-auth>Container</res-auth>      ----------- 同上
 </resource-ref>

======================================================== 3、spring配置文件(applicationContext.xml):
3、spring配置文件:
有两种方式:
=======================================================方式一:JndiObjectFactoryBean类配置dataSource
3.1、
      <!-- 1、配置JNDI数据源(配置在高性能的应用服务器(如WebLogic或Websphere等)上)
      Spring为此专门提供引用JNDI资源的JndiObjectFactoryBean类
  
<bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean">         
    <property name="jndiName" value="java:comp/env/jdbc/test"/> 
</bean>
=======================================================方式一:<jee>元素配置dataSource
 3.2、引入命名空间jee
   xmlns:jee="http://www.springframework.org/schema/jee"
    http://www.springframework.org/schema/jee       
     http://www.springframework.org/schema/jee/spring-jee-2.5.xsd

<jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/test"/> 


=========================================================== 4、将dataSource注入到sesisonFactory
 将dataSource注入到sessionFactory:
 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
   <property name="dataSource" ref="dataSource"/>   ----注入dataSource
   <property name="hibernateProperties">        --------hibernate的属性值
      <props>
         <prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
         <prop key="hibernate.current_session_context_class">thread</prop>
         <prop key="hibernate.show_sql">true</prop>
      </props>
   </property>
   <property name="mappingResources">   ---------------hibernate实体映射文件位置   (此时我们已经不需要hibernate.cfg.xml文件了)
      <list>
         <value>com/spring/test/Subject.hbm.xml</value>
      </list>
   </property>
</bean>

</beans>

posted @ 2013-03-17 11:41  miss you  阅读(384)  评论(0编辑  收藏  举报