spring的数据源基本配置

aplictaionContext-dataSource的配置：

 <?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:jee="http://www.springframework.org/schema/jee"
     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
     xmlns:jpa="http://www.springframework.org/schema/data/jpa"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

     <bean id="propertyConfigurer"
         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
         <property name="locations">
             <list>
                 <value>classpath:config.properties</value>
             </list>
         </property>
     </bean>

     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
         destroy-method="close">
         <property name="driverClassName">
             <value>${sqlDriver}</value>
         </property>
         <property name="url">
             <value>${sqlUrl}</value>
         </property>
         <property name="username">
             <value>${sqlUserName}</value>
         </property>
         <property name="password">
             <value>${sqlPassword}</value>
         </property>
         <property name="maxActive">
             <value>${sqlMaxActive}</value>
         </property>
         <property name="maxWait">
             <value>${sqlMaxWait}</value>
         </property>
         <property name="maxIdle">
             <value>${sqlMaxIdle}</value>
         </property>
     </bean>

 </beans>

propertyConfigurer用来配置用到的config.properties文件的位置，方便在datasource配置中引用。
config配置文件的写法如下：

 sqlDriver=com.mysql.jdbc.Driver
 sqlUrl=jdbc:mysql://127.0.0.1:3306/mydatabase?useUnicode=true&characterEncoding=utf8
 sqlUserName=root
 sqlPassword=123
 sqlMaxActive=500
 sqlMaxWait=1000
 sqlMaxIdle=50

记录下来供以后配置时参考。