Java之——Spring4+Hibernate4+Atomikos3.3多数据源事务管理

转载请注明出处:http://blog.csdn.net/l1028386804/article/details/48179319

Spring3+后不再对JTOM提供支持，所以可以改用Atomikos管理多数据源事务。

一.pom.xml

<dependency>
	<groupId>com.atomikos</groupId>
	<artifactId>transactions-jdbc</artifactId>
	<version>3.9.3</version>
</dependency>

二.applicationContext-atomikos.xml

<bean class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close" id="dataSource01">
    <!-- Set unique name for this DataSource -->  
    <property name="uniqueResourceName"><value>oracle</value></property>
    <!-- Set XADatasource class name -->  
    <property name="xaDataSourceClassName" value="oracle.jdbc.xa.client.OracleXADataSource" />
         
    <property name="xaProperties">
        <props>
            <prop key="user">${jdbc.username01}</prop>
            <prop key="password">${jdbc.password01}</prop>
            <prop key="URL">${jdbc.url01}</prop>
        </props>
    </property> 
    <!-- set properties for datasource connection pool -->  
    <property name="poolSize" value="3" />
    <!-- timeout after 20000 seconds -->
    <property name="reapTimeout"><value>20000</value></property>  
</bean>

<bean id="sessionFactory01"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource01" />
    <property name="packagesToScan">
        <list>
            <value>com.cpframework.function.**.model.oracle</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">
                org.hibernate.dialect.Oracle10gDialect
            </prop>
            <prop key="hibernate.show_sql">true</prop>
            <prop key="hibernate.current_session_context_class">jta</prop>
            <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</prop>
        </props>
    </property>
</bean>

<!-- oracleDAO -->
<bean id="hibernateDAO01" class="org.cpframework.dao.hibernate4.CP_Hibernate4DAOImpl">
  <property name="sessionFactory" ref="sessionFactory01"></property>
</bean>

<bean class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close" id="dataSource02">
    <!-- Set unique name for this DataSource -->  
    <property name="uniqueResourceName"><value>mysql</value></property>
    <!-- Set XADatasource class name -->
    <property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
    
    <property name="xaProperties">
        <props>
            <prop key="user">${jdbc.username02}</prop>
            <prop key="password">${jdbc.password02}</prop>
            <prop key="URL">${jdbc.url02}</prop>
        </props>
    </property> 
    <!-- set properties for datasource connection pool -->  
    <property name="poolSize" value="3" />
   
    <property name="reapTimeout"><value>20000</value></property>  
</bean>

<bean id="sessionFactory02"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource02" />
    <property name="packagesToScan">
        <list>
            <value>com.cpframework.function.**.model.mysql</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.current_session_context_class">jta</prop>
            <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JTATransactionFactory</prop>
        </props>
    </property>
</bean>


<!-- mysqlDAO -->
<bean id="hibernateDAO02" class="org.cpframework.dao.hibernate4.CP_Hibernate4DAOImpl">
  <property name="sessionFactory" ref="sessionFactory02"></property>
</bean>


<!-- atomikos事务管理器 -->
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" 
    init-method="init" destroy-method="close">
    <description>UserTransactionManager</description>  
    <property name="forceShutdown">
        <value>true</value>
    </property>
</bean>

<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
    <property name="transactionTimeout" value="300" />
</bean>
    
<!-- spring 事务管理器 -->
<bean id="transactionManager"
    class="org.springframework.transaction.jta.JtaTransactionManager">
    <property name="transactionManager" ref="atomikosTransactionManager"/>
    <property name="userTransaction" ref="atomikosUserTransaction" />
    <property name="allowCustomIsolationLevels" value="true"/> 
</bean>

<aop:config proxy-target-class="true">
    <aop:pointcut id="servicePoint"
        expression="execution (* com.cpframework.function.*.service.*.*Service*.*(..))" />
    <aop:advisor pointcut-ref="servicePoint" id="txAdvisor"
        advice-ref="defaultTxAdvice" />
</aop:config>

<tx:advice id="defaultTxAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="find*" read-only="true" />
        <tx:method name="get*" read-only="true" />
        <tx:method name="query*" read-only="true" />
        <tx:method name="load*" read-only="true" />
        <tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Exception" />
        <tx:method name="create*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="save*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="update*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="modify*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="delete*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="remove*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="apply*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
        <tx:method name="handle*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
            <tx:method name="do*" propagation="REQUIRED"
            rollback-for="java.lang.Exception" />
    </tx:attributes>
</tx:advice>

三.transactions.properties

将transactions.properties文件放到编译根路径下，可根据需要开启相关注解，参见附件。

需要注意两点：
1.session必须使用sessionFactory.openSession()的方式获得，不能使用sessionFactory.getCurrentSession()。
2.更新操作必须调用session.flush()方法。

例如：

public void update(Object entity) {
	Session session = sessionFactory.openSession();
	session.update(entity);
	session.flush();
}