使用 Common TransactionManager 管理 Hibernate 和 Activiti

Question

我想使用一个通用的事务管理器(JpaTransactionManager)进行休眠和激活，但我不能！我已经阅读了所有互联网资源！听见是一个简单的场景(甚至不使用休眠！！

1. 在任务中保存变量
2. 在任务中保存变量#执行
3. 完成任务

场景实现(在带有@Transactional注释的 Spring Bean 方法中)：

@Component
public class TaskManager {
@Autowired TaskService taskService;
@Autowired RuntimeService runtimeService;
@Transactional
public void completeTask(CompleteTaskRequest request) {
Task task = taskService.createTaskQuery().taskId(request.getTaskId()).singleResult();
if (task == null) {
throw new ActivitiObjectNotFoundException("No task found");
}
taskService.setVariableLocal(task.getId(), "actionDisplayUrl", request.getActionDisplayUrl());
taskService.setVariableLocal(task.getId(), "actionSummaryUrl", request.getActionSummaryUrl());
runtimeService.setVariableLocal(task.getExecutionId(), "prevTaskId", task.getId());
taskService.complete(task.getId());
}
}

很明显：如果taskService.complete抛出错误，整个事务应该回滚，所以所有保存的变量都应该回滚，并且应该通过下面的测试用例：

@Test
@Deployment(resources = "org.activiti.test/CompleteTaskTest.bpmn20.xml")
public void testCompleteTaskWithError() {
Map<String, Object> processVars = new HashMap<>();
processVars.put("error", true); // Causes throwing error in ScriptTaskListener
runtimeService.startProcessInstanceByKey("CompleteTaskTest", processVars);
Task task = taskService.createTaskQuery().taskName("Task 1").singleResult();
CompleteTaskRequest req = new CompleteTaskRequest();
req.setTaskId(task.getId());
req.setActionDisplayUrl("/actions/1234");
req.setActionSummaryUrl("/actions/1234/summary");
try {
taskManager.completeTask(req);
fail("An error expected!");
} catch(Exception e) {
}
// Check variables rollback
assertNull(taskService.getVariableLocal(task.getId(),"actionSummaryUrl"));
assertNull(taskService.getVariableLocal(task.getId(),"actionDisplayUrl"));
assertNull(runtimeService.getVariableLocal(task.getExecutionId(), "prevTaskId"));
}

但它失败了，变量被提交到数据库(而不是回滚)。

Spring 上下文(使用org.springframework.orm.jpa.JpaTransactionManager作为事务管理器)：

<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration">
<property name="dataSource" ref="dataSource" />
<property name="transactionManager" ref="transactionManager" />
<property name="idGenerator" ref="idGenerator"/>
<property name="databaseSchemaUpdate" value="true" />
<property name="jpaEntityManagerFactory" ref="entityManagerFactory" />
<property name="jpaHandleTransaction" value="true" />
<property name="jpaCloseEntityManager" value="true" />
<property name="beans" ref="processEngineBeans" />
<property name="jobExecutorActivate" value="false" />
<property name="asyncExecutorEnabled" value="true" />
<property name="asyncExecutorActivate" value="true" />
</bean>
<aop:config proxy-target-class="true" />
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration" />
</bean>
<bean id="processEngineBeans" class="java.util.HashMap">
<constructor-arg index="0" type="java.util.Map">
<map>
</map>
</constructor-arg>
</bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService" />
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService" />
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService" />
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService" />
<bean id="managementService" factory-bean="processEngine" factory-method="getManagementService" />
<bean id="identityService" factory-bean="processEngine" factory-method="getIdentityService" />
<bean id="formService" factory-bean="processEngine" factory-method="getFormService" />
<bean id="idGenerator" class="org.activiti.engine.impl.persistence.StrongUuidGenerator" />
<bean id="activitiRule" class="org.activiti.engine.test.ActivitiRule">
<property name="processEngine" ref="processEngine" />
</bean>

<bean id="persistenceUnitManager"
class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="packagesToScan" value="org.activiti.test" />
<property name="defaultDataSource" ref="dataSource" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect_resolvers">org.hibernate.engine.jdbc.dialect.internal.DialectResolverSet</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
<prop key="hibernate.cache.use_query_cache">false</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
<property name="driverClass" value="org.h2.Driver" />
<property name="url" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" />
<property name="username" value="sa" />
<property name="password" value="" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true"/>
<!-- bean post-processor for JPA annotations -->
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" >
<property name="proxyTargetClass" value="true" />
</bean>

版本：

• 活动版本：5.22.0
• DB：h2(也在生产中使用Oracle进行了测试)

我的配置有什么问题？

附言

• 测试项目将在此处上传。
• 我也在露天论坛上问过这个问题。

更新：：

通过使用org.springframework.jdbc.datasource.DataSourceTransactionManager而不是org.springframework.orm.jpa.JpaTransactionManager测试用例通过。但是现在我无法持久化 JPA 实体。

Answer 1

这个问题可以通过解决MyBatis(JDBC)和Hibernate(JPA)之间的冲突来解决：

应将jpaVendorAdapter属性添加到 BeanentityManagerFactory：

<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>

所以entityManagerFactory豆应该是这样的：

<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider" />
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect_resolvers">org.hibernate.engine.jdbc.dialect.internal.DialectResolverSet</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.cache.use_second_level_cache">false</prop>
<prop key="hibernate.cache.use_query_cache">false</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>

有关更多详细信息，请参阅此问题的答案。