：spring配置ibatis的jdbc方式和proxool、c3p0连接池方式

spring配置ibatis的jdbc方式和proxool连接池方式，以sqlserver2005为例，驱动为sqljdbc.jar

jdbc.properties中内容如下
jdbc.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
jdbc.url=jdbc\:sqlserver\://localhost\:1433; DatabaseName\=IBATIS
jdbc.username=sa
jdbc.password=1234561

直接用jdbc方式（这种方式适合开发阶段，发布的程序强烈要求用连接池），代码如下，这个都知道，没什么可说的

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
    
    <context:component-scan base-package="com.mydomain">
        <context:include-filter type="aspectj" expression="com.mydomain.spring..*"/>
    </context:component-scan>
    <context:property-placeholder location="classpath:jdbc.properties" />
    <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>

    <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        <property name="configLocation" value="classpath:com/mydomain/data/SqlMapConfig.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--事务管理直接用的DataSourceTransactionManager-->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <aop:config>
        <aop:pointcut id="baseServiceMethods"
            expression="execution(* com.mydomain.spring.*.*(..))" />
        <aop:advisor advice-ref="txAdvice"
            pointcut-ref="baseServiceMethods" />
    </aop:config>
    <aop:aspectj-autoproxy />
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="select*" read-only="true" propagation="REQUIRED"/>
            <tx:method name="find*" read-only="true"  propagation="REQUIRED"/>
            <tx:method name="save*"  propagation="REQUIRED" isolation="REPEATABLE_READ"/>
            <tx:method name="update*"  propagation="REQUIRED" isolation="REPEATABLE_READ"/>
            <tx:method name="add*"  propagation="REQUIRED" isolation="REPEATABLE_READ" />
            <tx:method name="delete*"  propagation="REQUIRED" isolation="REPEATABLE_READ"/>
        </tx:attributes>
    </tx:advice>
</beans>

SqlMapConfig.xml内容如下：

<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
    "http://www.ibatis.com/dtd/sql-map-config-2.dtd">

<sqlMapConfig>
  <sqlMap resource="com/mydomain/data/Account.xml"/>
  
</sqlMapConfig>2 用proxool连接池方式，只有datasource发生变化，其他的无变动
  需要加入proxool.jar
    <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource" destroy-method="close">
        <property name="alias" value="test"></property>
        <property name="delegateProperties">
            <value>user=${jdbc.username},password=${jdbc.password}</value>
        </property>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="driver" value="${jdbc.driverClassName}"/>
        <property name="driverUrl" value="${jdbc.url}"/>
        <property name="houseKeepingTestSql" value="select CURRENT_DATE"></property>
        <!--此处继续增加proxool属性，详细见proxool文档-->
    </bean>

此处说明一下：属性中的user和password不起任何作用，需要用delegateProperties方式写一下，否则会报错误，如下
    org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user ''. The user is not associated with a trusted SQL Server connection.
但是user和password还不能被去掉。

除了上面的用delegateProperties之外，还可以将用户名和密码直接写在url后面。

proxool属性的说明，在这里写的比较详细
http://www.cnblogs.com/wllyy189/archive/2008/10/15/1311560.html
3 c3p0方式
  需要加入c3p0.jar
  

 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass">
                <value>${jdbc.driverClassName}</value>
            </property>
            <property name="jdbcUrl">
                <value>${jdbc.url}</value>
            </property>
            <property name="user">
                <value>${jdbc.username}</value>
            </property>
            <property name="password">
                <value>${jdbc.password}</value>
            </property>
            <!--此处继续增加c3p0属性-->
    </bean>

关于c3p0的属性说明请参见：
http://www.blogjava.net/Alpha/archive/2009/03/29/262789.html