Spring data - 同一事务上的两个不同数据源导致异常
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【中文标题】Spring data - 同一事务上的两个不同数据源导致异常【英文标题】：Spring data - two different data sources on the same transaction causing abnormality 【发布时间】：2014-02-05 15:54:29 【问题描述】：我们正在使用带有 spring 和 2 个不同 mysql 数据源的 atomikos JTA。
我们遇到了问题，
当我们在同一个 @Transactional 方法上使用两个不同的存储库（2 个不同的数据源）时，我们会得到一个错误：
Caused by: java.sql.SQLException: Unable to enlist connection the transaction
当第二个存储库对数据源执行某些操作时会发生这种情况。
我们认为这与事务管理器 (atomikos jta) 有关，当同一事务涉及 2 个不同的数据源时可能会出现问题。
这里是数据源 xml：
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="xaDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"
lazy-init="true">
<property name="pinGlobalTxToPhysicalConnection" value="true" />
<property name="url" value="$mysql_url" />
<property name="user" value="root" />
<property name="password" value="xxx" />
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.managed.BasicManagedDataSource">
<property name="initialSize" value="10" />
<property name="maxActive" value="100" />
<property name="maxIdle" value="15" />
<property name="minIdle" value="10" />
<property name="timeBetweenEvictionRunsMillis" value="10000" />
<property name="minEvictableIdleTimeMillis" value="60000" />
<property name="validationQuery" value="/* ping */ SELECT 1" />
<property name="testOnBorrow" value="true" />
<property name="testWhileIdle" value="true" />
<property name="xaDataSourceInstance" ref="xaDataSource" />
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="removeAbandoned" value="true" />
<property name="removeAbandonedTimeout" value="300" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="com.xxx.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
</props>
</property>
<property name="dataSource" ref="dataSource" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="MYSQL" />
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
<property name="jpaPropertyMap">
<map>
<entry key="javax.persistence.transactionType" value="JTA" />
<entry key="hibernate.transaction.manager_lookup_class"
value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
<entry key="hibernate.connection.autocommit" value="false" />
</map>
</property>
</bean>
<!-- shared data source -->
<bean id="shardXaDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"
lazy-init="true">
<property name="pinGlobalTxToPhysicalConnection" value="true" />
<property name="url" value="$shared_mysql_url" />
<property name="user" value="root" />
<property name="password" value="xxx" />
</bean>
<bean id="shareddDataSource" class="org.apache.commons.dbcp.managed.BasicManagedDataSource">
<property name="initialSize" value="10" />
<property name="maxActive" value="100" />
<property name="maxIdle" value="15" />
<property name="minIdle" value="10" />
<property name="timeBetweenEvictionRunsMillis" value="10000" />
<property name="minEvictableIdleTimeMillis" value="60000" />
<property name="validationQuery" value="/* ping */ SELECT 1" />
<property name="testOnBorrow" value="true" />
<property name="testWhileIdle" value="true" />
<property name="xaDataSourceInstance" ref="shardXaDataSource" />
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="removeAbandoned" value="true" />
<property name="removeAbandonedTimeout" value="300" />
</bean>
<bean id="sharedEntityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="com.xxx.shared.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
</props>
</property>
<property name="dataSource" ref="shareddDataSource" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="MYSQL" />
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
<property name="jpaPropertyMap">
<map>
<entry key="javax.persistence.transactionType" value="JTA" />
<entry key="hibernate.transaction.manager_lookup_class"
value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
<entry key="hibernate.connection.autocommit" value="false" />
</map>
</property>
</bean>
还有transaction.xml：
<tx:annotation-driven proxy-target-class="true" />
<tx:jta-transaction-manager
transaction-manager="atomikosTransactionManager" />
<tx:annotation-driven transaction-manager="atomikosTransactionManager"
proxy-target-class="true" />
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<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>
* 编辑 (19.01.2014) *
因此，根据 M. Deinum 的帮助，我们设法使错误消失，但现在没有实际的事务发生（在例外情况下，例如没有回滚）
这是我们的新配置：
数据源.xml：
<bean id="xaDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"
lazy-init="true">
<property name="pinGlobalTxToPhysicalConnection" value="true" />
<property name="url" value="$mysql_url" />
<property name="user" value="root" />
<property name="password" value="6918001" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jtaDataSource" ref="xaDataSource" />
<property name="packagesToScan" value="com.xxx.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup </prop>
</props>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" />
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
</bean>
<bean id="shardXaDataSource" class="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource"
lazy-init="true">
<property name="pinGlobalTxToPhysicalConnection" value="true" />
<property name="url" value="$shared_mysql_url" />
<property name="user" value="root" />
<property name="password" value="6918001" />
</bean>
<bean id="sharedEntityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jtaDataSource" ref="shardXaDataSource" />
<property name="packagesToScan" value="com.xxx.shared.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup</prop>
</props>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" />
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
transaction.xml：
<?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:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<tx:annotation-driven proxy-target-class="true" />
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<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>
</beans>
* 编辑 01/20/2014 *
我们设法让它工作，但启动时出现大量警告：
20 Jan 2014 15:14:16 WARN AbstractDataSourceBean - AtomikosDataSoureBean 'xaDataSource': poolSize equals default - this may cause performance problems!
20 Jan 2014 15:14:17 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:17 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:17 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:17 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:17 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:17 WARN JtaPlatformInitiator - HHH000427: Using deprecated org.hibernate.transaction.TransactionManagerLookup strategy [hibernate.transaction.manager_lookup_class], use newer org.hibernate.service.jta.platform.spi.JtaPlatform strategy instead [hibernate.transaction.jta.platform]
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@4063a38e: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AbstractDataSourceBean - AtomikosDataSoureBean 'sharedXaDataSource': poolSize equals default - this may cause performance problems!
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN JtaPlatformInitiator - HHH000427: Using deprecated org.hibernate.transaction.TransactionManagerLookup strategy [hibernate.transaction.manager_lookup_class], use newer org.hibernate.service.jta.platform.spi.JtaPlatform strategy instead [hibernate.transaction.jta.platform]
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN AtomikosConnectionProxy - atomikos connection proxy for com.mysql.jdbc.jdbc2.optional.JDBC4ConnectionWrapper@3d00772f: WARNING: transaction manager not running?
20 Jan 2014 15:14:18 WARN EntityManagerFactoryRegistry - HHH000436: Entity manager factory name (default) is already registered. If entity manager will be clustered or passivated, specify a unique value for property 'hibernate.ejb.entitymanager_factory_name'
20 Jan 2014 15:14:18 WARN UserTransactionServiceImp - No properties path set - looking for transactions.properties in classpath...
20 Jan 2014 15:14:18 WARN UserTransactionServiceImp - transactions.properties not found - looking for jta.properties in classpath...
20 Jan 2014 15:14:18 WARN UserTransactionServiceImp - Failed to open transactions properties file - using default values
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050100104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050100104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050200104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050200104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050300104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050300104 with state COMMITTING
20 Jan 2014 15:14:18 WARN CoordinatorImp - Local heuristic termination of coordinator 10.0.50.117.tm0050400104 with state COMMITTING
新的配置是：
<bean id="xaDataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean"
init-method="init" destroy-method="close">
<property name="xaDataSourceClassName">
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property name="uniqueResourceName"><value>xaDataSource</value></property>
<property name="xaProperties">
<props>
<prop key="url">$mysql_url</prop>
<prop key="user">root</prop>
<prop key="password">xxx</prop>
</props>
</property>
</bean>
<bean id="sharedXaDataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean"
init-method="init" destroy-method="close">
<property name="xaDataSourceClassName">
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property name="uniqueResourceName"><value>sharedXaDataSource</value></property>
<property name="xaProperties">
<props>
<prop key="url">$shared_mysql_url</prop>
<prop key="user">root</prop>
<prop key="password">xxx</prop>
</props>
</property>
</bean>
【问题讨论】：
【参考方案1】：<tx:annotation-driven proxy-target-class="true" />
<tx:jta-transaction-manager
transaction-manager="atomikosTransactionManager" />
<tx:annotation-driven transaction-manager="atomikosTransactionManager"
proxy-target-class="true" />
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<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>
您的配置有缺陷并且包含重复，这可能会使 spring 感到困惑。 JtaTransactionManager 和 <tx:jta-transaction-manager /> 都创建了一个 JtaTransactionManager。
接下来您的<tx:annotation-driven > 应该指向JtaTransactionManager，但它指向UserTransactionManager。
所以首先修复你的配置：
<tx:annotation-driven proxy-target-class="true" />
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<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>
假设您使用的是最新的 Spring 3.2 版本，而不是在您的 LocalContainerEntityManagerFactoryBean 上注入 jtaDataSource 属性，而不是注入 jtaDataSource，接下来您的 jpaProperties 和 jpaPropertiesMap 可以被清理。
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jtaDataSource" ref="xaDataSource" />
<property name="packagesToScan" value="com.xxx.model" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.transaction.manager_lookup_class">com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup</prop>
</props>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" />
<property name="showSql" value="false" />
<property name="generateDdl" value="false" />
</bean>
</property>
</bean>
hibernate.connection 属性在您注入 Spring 托管数据源时毫无用处。由于jtaDataSource 的注入，javax.persistence.transactionType 的 jpaProperty 可以被删除。 HibernateJpaVendorAdapter 已经设置了HibernateJpaDialect，您可以使用databasePlatform 属性来指定方言。
关于您的数据源，您应该对数据源使用 Atomikos 包装器，以便它们了解 Atomikos。为此，请使用 AtomikosDataSourceBean 而不是 xa 为您的 JDBC 驱动程序提供的数据源。
<bean id="xaDataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close">
<property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
<property name="uniqueResourceName" value="xaDataSource"/>
<property name="xaProperties">
<props>
<prop key="url">$mysql_url</prop>
<prop key="user">root</prop>
<prop key="password">xxx</prop>
</props>
</property>
</bean>
最后，您使用BasicDataSource 作为对休眠的引用，而您应该使用启用（和包装）xa 的数据源。
【讨论】：
M.Deinum，现在没有抛出错误，这是个好消息！。但是，现在没有为我的所有实体（来自任一数据源）发出回滚。例如，如果我的服务使用@Transactional 进行了注释并且我在其中保留了一个实体，如果在没有回滚后抛出错误:(，我已经用我所做的更改编辑了我的原始帖子。谢谢！ 日志没有回滚或者数据库没有回滚？你正在使用 MySQL，所以还要确保你使用事务表类型（InnoDB 而不是 MyISAM）。您可能希望为org.springframework 启用调试日志记录并查看会发生什么（如果 tx 正确启动等）。
谢谢 Deinum，我们按照您的建议做了，我们的日志中有错误。我们把它放在原帖上（*** edit2 ***）
这是一条调试消息，您不能手动回滚（但必须将事务标记为仅回滚）。不应该是你的问题，如上所述检查你的数据库。我在您的堆栈跟踪中错过的是表明 spring 是此事务设置的一部分（我没有看到 spring transactioninterceptor 等）。
Transactioninterceptor 无处可寻：/ 它可能是什么？为什么 spring 不是这个交易的一部分？这个管弦乐队是否还有我们在原帖中没有提到的其他必需配置？【参考方案2】：
试试这个：在你的事务管理器上添加：
<qualifier value="transactionManager1"/>
示例：
<bean id="transactionManager1" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory1" />
<qualifier value="transactionManager1"/>
</bean>
然后在你的 DAO 实现中做这样的事情：
@Repository("Users1DAO")
public class Users1DAOJpaImp implements Users1DAO
@PersistenceContext(unitName="datasources1")
@Qualifier("transactionTemplate1")
private EntityManager em;
@Override
@Transactional(value="transactionManager1", readOnly = false, propagation = Propagation.MANDATORY)
public void save(Users1 user)
em.persist(user);
【讨论】：
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