以下配置作为参考笔记，个人比较喜欢注解方式的事务，所以没有切片事务的配置。
环境：Spring 3.2.5 + hibernate4.2.7sp1
单库事务：
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
">
<bean
destroy-method="close">
<property>
<value>com.mysql.jdbc.Driver</value>
</property>
<property>
<value>jdbc:mysql://www.englishfree.com.cn:3308/knowledge?characterEncoding=UTF8</value>
</property>
<property>
<value>icod</value>
</property>
<property>
<value>123.com</value>
</property>
<!-- 解决死锁问题 -->
<!-- 当连接池连接耗尽时，客户端getConnection(),所等待的时间 -->
<property>
<value>30000</value>
</property>
<!--连接池中保留的最小连接数。 -->
<property>
<value>3</value>
</property>
<!--连接池中保留的最大连接数。Default: 15 -->
<property>
<value>30</value>
</property>
<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
<property>
<value>3</value>
</property>
<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<property>
<value>30</value>
</property>
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<property>
<value>3</value>
</property>
<!--JDBC的标准参数，用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。所以设置这个参数需要考虑到多方面的因素。
如果maxStatements与maxStatementsPerConnection均为0，则缓存被关闭。Default: 0 -->
<property>
<value>0</value>
</property>
<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
<property>
<value>60</value>
</property>
<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
<property>
<value>30</value>
</property>
<!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留，并在下次调用getConnection()的时候继续尝试获取连接。如果设为true，那么在尝试
获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
<property>
<value>true</value>
</property>
<!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod或automaticTestTable
等方法来提升连接测试的性能。Default: false -->
<property>
<value>false</value>
</property>
</bean>
<bean
>
<property>
<ref bean="dataSource" />
</property>
<property>
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
</props>
</property>
<property>
<list>
<value>
com/store/hibernate/Goods.hbm.xml
</value>
<value>
com/store/hibernate/Purchase.hbm.xml
</value>
<value>
com/store/hibernate/Role.hbm.xml
</value>
<value>
com/store/hibernate/Sale.hbm.xml
</value>
<value>
com/store/hibernate/Stock.hbm.xml
</value>
<value>
com/store/hibernate/User.hbm.xml
</value>
<value>
com/store/hibernate/GoodsStock.hbm.xml
</value>
<value>
com/store/hibernate/Locktest.hbm.xml
</value>
</list>
</property>
</bean>
<bean
>
<property ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager"
proxy-target-class="true" />
<bean>
<property>
<ref bean="sessionFactory" />
</property>
</bean>
<bean>
<property>
<ref bean="storeDAO" />
</property>
<property>
<ref bean="storeDAO" />
</property>
</bean>
<!-- action beans -->
<bean scope="prototype">
<property ref="storeDAO" />
</bean>
</beans>
atomikos-nonxa方式：
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
">
<bean
init-method="init" destroy-method="close">
<property>
<value>true</value>
</property>
</bean>
<bean>
<property value="240" />
</bean>
<bean
>
<property>
<ref bean="atomikosTransactionManager" />
</property>
<property>
<ref bean="atomikosUserTransaction" />
</property>
<property value="true" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager"
proxy-target-class="true" />
<bean
init-method="init" destroy-method="close">
<property>
<value>store3308</value>
</property>
<property>
<value>com.mysql.jdbc.Driver</value>
</property>
<property>
<value>jdbc:mysql://www.englishfree.com.cn:3308/knowledge?characterEncoding=UTF8</value>
</property>
<property>
<value>icod</value>
</property>
<property>
<value>123.com</value>
</property>
<property>
<value>5</value>
</property>
<property>
<value>60</value>
</property>
</bean>
<bean
init-method="init" destroy-method="close">
<property>
<value>store3333</value>
</property>
<property>
<value>com.mysql.jdbc.Driver</value>
</property>
<property>
<value>jdbc:mysql://www.englishfree.com.cn:3333/knowledge?characterEncoding=UTF8</value>
</property>
<property>
<value>icod</value>
</property>
<property>
<value>123.com</value>
</property>
<property>
<value>5</value>
</property>
<property>
<value>60</value>
</property>
</bean>
<bean
>
<property>
<ref bean="dataSource1" />
</property>
<property>
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.transaction.factory_class">
org.hibernate.transaction.JTATransactionFactory
</prop>
<prop key="hibernate.transaction.manager_lookup_class">
com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
</prop>
</props>
</property>
<property>
<list>
<value>
com/store/hibernate/Goods.hbm.xml
</value>
<value>
com/store/hibernate/Purchase.hbm.xml
</value>
<value>
com/store/hibernate/Role.hbm.xml
</value>
<value>
com/store/hibernate/Sale.hbm.xml
</value>
<value>
com/store/hibernate/Stock.hbm.xml
</value>
<value>
com/store/hibernate/User.hbm.xml
</value>
<value>
com/store/hibernate/GoodsStock.hbm.xml
</value>
<value>
com/store/hibernate/Locktest.hbm.xml
</value>
</list>
</property>
</bean>
<bean
>
<property>
<ref bean="dataSource2" />
</property>
<property>
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.transaction.factory_class">
org.hibernate.transaction.JTATransactionFactory
</prop>
<prop key="hibernate.transaction.manager_lookup_class">
com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
</prop>
</props>
</property>
<property>
<list>
<value>
com/store/hibernate/Goods.hbm.xml
</value>
<value>
com/store/hibernate/Purchase.hbm.xml
</value>
<value>
com/store/hibernate/Role.hbm.xml
</value>
<value>
com/store/hibernate/Sale.hbm.xml
</value>
<value>
com/store/hibernate/Stock.hbm.xml
</value>
<value>
com/store/hibernate/User.hbm.xml
</value>
<value>
com/store/hibernate/GoodsStock.hbm.xml
</value>
<value>
com/store/hibernate/Locktest.hbm.xml
</value>
</list>
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory1" />
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory1" />
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory2" />
</property>
</bean>
<bean>
<property>
<ref bean="storeDAO1" />
</property>
<property>
<ref bean="storeDAO2" />
</property>
</bean>
<!-- action beans -->
<bean scope="prototype">
<property ref="storeDAO1" />
</bean>
</beans>
atomikos-xa方式：
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
">
<bean
init-method="init" destroy-method="close">
<property>
<value>true</value>
</property>
</bean>
<bean>
<property value="240" />
</bean>
<bean
>
<property>
<ref bean="atomikosTransactionManager" />
</property>
<property>
<ref bean="atomikosUserTransaction" />
</property>
<property value="true" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager"
proxy-target-class="true" />
<bean
init-method="init" destroy-method="close">
<description>dataSource 3308</description>
<property>
<value>store3308</value>
</property>
<property>
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property>
<props>
<prop key="user">icod</prop>
<prop key="password">123.com</prop>
<prop key="URL">jdbc:mysql://www.englishfree.com.cn:3308/knowledge?characterEncoding=UTF8</prop>
<prop key="pinGlobalTxToPhysicalConnection">true</prop>
<prop key="autoReconnect">true</prop>
</props>
</property>
<!-- set properties for datasource connection pool -->
<property>
<value>2</value>
</property>
<property>
<value>20</value>
</property>
<property>
<value>30</value>
</property>
<property>
<value>600</value>
</property>
<!-- set a SQL for testing connection -->
<property>
<value>select 1 from dual</value>
</property>
</bean>
<bean
init-method="init" destroy-method="close">
<description>dataSource 3333</description>
<property>
<value>store3333</value>
</property>
<property>
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property>
<props>
<prop key="user">icod</prop>
<prop key="password">123.com</prop>
<prop key="URL">jdbc:mysql://www.englishfree.com.cn:3333/knowledge?characterEncoding=UTF8</prop>
<prop key="pinGlobalTxToPhysicalConnection">true</prop>
<prop key="autoReconnect">true</prop>
</props>
</property>
<!-- set properties for datasource connection pool -->
<property>
<value>2</value>
</property>
<property>
<value>20</value>
</property>
<property>
<value>30</value>
</property>
<property>
<value>600</value>
</property>
<!-- set a SQL for testing connection -->
<property>
<value>select 1 from dual</value>
</property>
</bean>
<bean
>
<property>
<ref bean="dataSource1" />
</property>
<property>
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.transaction.factory_class">
org.hibernate.transaction.JTATransactionFactory
</prop>
<prop key="hibernate.transaction.manager_lookup_class">
com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
</prop>
</props>
</property>
<property>
<list>
<value>
com/store/hibernate/Goods.hbm.xml
</value>
<value>
com/store/hibernate/Purchase.hbm.xml
</value>
<value>
com/store/hibernate/Role.hbm.xml
</value>
<value>
com/store/hibernate/Sale.hbm.xml
</value>
<value>
com/store/hibernate/Stock.hbm.xml
</value>
<value>
com/store/hibernate/User.hbm.xml
</value>
<value>
com/store/hibernate/GoodsStock.hbm.xml
</value>
<value>
com/store/hibernate/Locktest.hbm.xml
</value>
</list>
</property>
</bean>
<bean
>
<property>
<ref bean="dataSource2" />
</property>
<property>
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.current_session_context_class">jta</prop>
<prop key="hibernate.transaction.factory_class">
org.hibernate.transaction.JTATransactionFactory
</prop>
<prop key="hibernate.transaction.manager_lookup_class">
com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup
</prop>
</props>
</property>
<property>
<list>
<value>
com/store/hibernate/Goods.hbm.xml
</value>
<value>
com/store/hibernate/Purchase.hbm.xml
</value>
<value>
com/store/hibernate/Role.hbm.xml
</value>
<value>
com/store/hibernate/Sale.hbm.xml
</value>
<value>
com/store/hibernate/Stock.hbm.xml
</value>
<value>
com/store/hibernate/User.hbm.xml
</value>
<value>
com/store/hibernate/GoodsStock.hbm.xml
</value>
<value>
com/store/hibernate/Locktest.hbm.xml
</value>
</list>
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory1" />
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory1" />
</property>
</bean>
<bean>
<property>
<ref bean="sessionFactory2" />
</property>
</bean>
<bean>
<property>
<ref bean="storeDAO1" />
</property>
<property>
<ref bean="storeDAO2" />
</property>
</bean>
<!-- action beans -->
<bean scope="prototype">
<property ref="storeDAO1" />
</bean>
</beans>
anomikos引入，会让web app启动慢，没必要的情况下，还是不用。