Atomikos+Spring+Hibernate支持多数据源+事务回滚

公司的一项目有个功能，通过发http请求操作别的数据库，如果遇到了网络差时，请求过去了，没回来，没回来又得请求校验，很麻烦，于是想了想不要不要直接一个service也把那个数据的数据进行操作了，一开始直接配置多个datasource多个sessionFactory,发现可以处理，但是回滚不了。。。不是同库，于是Google,找到了相关的方法：Atomikos!!!

官网demo url:

1、https://www.atomikos.com/Documentation/SpringIntegration

2、https://www.atomikos.com/Documentation/HibernateIntegration

然后也整理了下applicationContext.xml文件，做个装简单的demo

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:util="http://www.springframework.org/schema/util" xmlns:task="http://www.springframework.org/schema/task"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
      				  http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
      				  http://www.springframework.org/schema/tx
      				  http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
      				  http://www.springframework.org/schema/aop
      				  http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
      				  http://www.springframework.org/schema/context
      				  http://www.springframework.org/schema/context/spring-context-4.2.xsd
      				  http://www.springframework.org/schema/util
      				  http://www.springframework.org/schema/util/spring-util-4.2.xsd
      				  http://www.springframework.org/schema/task
      				  http://www.springframework.org/schema/task/spring-task-4.2.xsd">
    <!-- 扫描包 -->
    <context:component-scan base-package="com.hgsoft" />
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="locations">
            <list>
                <value>classpath:config.properties</value>
                <value>classpath:jdbc.properties</value>
                <value>classpath:redis.properties</value>
            </list>
        </property>
    </bean>
    <!--数据源A-->
    <bean id="datasourceA" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close">
        <property name="uniqueResourceName" value="A"/>
        <property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"/>
        <property name="xaProperties">
            <props>
                <prop key="url">${jdbc.urla}</prop>
                <prop key="user">${jdbc.username}</prop>
                <prop key="password">${jdbc.password}</prop>
            </props>
        </property>
        <property name="minPoolSize" value="10" />
        <property name="maxPoolSize" value="100" />
        <property name="borrowConnectionTimeout" value="30" />
        <property name="testQuery" value="select 1" />
        <property name="maintenanceInterval" value="60" />
    </bean>
    <!--数据源B-->
    <bean id="datasourceB" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close">
        <property name="uniqueResourceName" value="B"/>
        <property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"/>
        <property name="xaProperties">
            <props>
                <prop key="url">${jdbc.urlb}</prop>
                <prop key="user">${jdbc.username}</prop>
                <prop key="password">${jdbc.password}</prop>
            </props>
        </property>
        <property name="minPoolSize" value="10" />
        <property name="maxPoolSize" value="100" />
        <property name="borrowConnectionTimeout" value="30" />
        <property name="testQuery" value="select 1" />
        <property name="maintenanceInterval" value="60" />
    </bean>
    <bean id="sessionFactoryA" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="datasourceA"/>
        <property name="mappingDirectoryLocations">
            <list>
                <value>classpath*:cn/ywj/entity</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">none</prop>
            </props>
        </property>
    </bean>
    <bean id="sessionFactoryB" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="datasourceB"/>
        <property name="mappingDirectoryLocations">
            <list>
                <value>classpath*:cn/ywj/entity</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props
 
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">none</prop>
            </props>
        </property>
    </bean>
    <!--官网翻译：when close is called, should we force transactions to terminate or not-->
    <bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close">
        <property name="forceShutdown" value="true"/>
    </bean>
    <!--官网翻译：Also use Atomikos UserTransactionImp, needed to configure Spring-->
    <bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
        <property name="transactionTimeout" value="300"/>
    </bean>
    <!--事务管理-->
    <bean id="transactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
        <property name="transactionManager" ref="atomikosTransactionManager"/>
        <property name="userTransaction" ref="atomikosUserTransaction"/>
    </bean>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="query*" read-only="true" />
            <tx:method name="*" read-only="false" />
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* com.hgsoft.wushan.member.service.*.*(..))"id="pointcut" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut" />
    </aop:config>
</beans>

然后需要两个BaseDao分别注入sessionFactoryA和B，就这个样子。