我使用 Spring-Data Neo4j 2.2.0-RELEASE。（我的以下问题适用于任何其他类型的实体映射，为什么不适用 JPA）
在我的项目中，我有一个使用@TransactionalSpring 注释注释的公共方法，因为我想更新/保存其中的实体：
public class MeetingServices {
private UserRepository userRepository;
private MeetingRepository meetingRepository;
public void setUserRepository(UserRepository userRepository) {
this.userRepository = userRepository;
}
public void setMeetingRepository(MeetingRepository meetingRepository) {
this.meetingRepository = meetingRepository;
}
@Transactional("neo4jTransactionManager")
public void save(Meeting meeting) {
User creator = userRepository.getUserByEmail("test@test.com");
creator.participateIn(meeting); // this line leads to a NotInTransactionException since it signals that no transaction context is associated.
meeting.setCreator(creator);
}
我的 application-context.xml 如下：
<?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:context="http://www.springframework.org/schema/context"
xmlns:neo4j="http://www.springframework.org/schema/data/neo4j"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/data/neo4j
http://www.springframework.org/schema/data/neo4j/spring-neo4j.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="graphDatabaseService" class="org.neo4j.kernel.EmbeddedGraphDatabase">
<constructor-arg value="target/neo4jgraph" />
</bean>
<neo4j:config graphDatabaseService="graphDatabaseService" />
<bean id="meetingServices" class="services.MeetingServices">
<property name="userRepository"><ref bean="userRepository"/></property>
<property name="meetingRepository"><ref bean="meetingRepository"/></property>
</bean>
<bean id="userServices" class="services.UserServices">
<property name="userRepository"><ref bean="userRepository"/></property>
</bean>
<bean id="neo4jTransactionManager"
class="org.springframework.transaction.jta.JtaTransactionManager">
<property name="transactionManager">
<bean class="org.neo4j.kernel.impl.transaction.SpringTransactionManager">
<constructor-arg ref="graphDatabaseService" />
</bean>
</property>
<property name="userTransaction">
<bean class="org.neo4j.kernel.impl.transaction.UserTransactionImpl">
<constructor-arg ref="graphDatabaseService" />
</bean>
</property>
</bean>
<tx:annotation-driven mode="aspectj"
transaction-manager="neo4jTransactionManager" />
<!-- auto-generated repositories for Neo4j storage -->
<neo4j:repositories base-package="repositories"/>
<context:spring-configured/>
<context:annotation-config/>
</beans>
正如我们在此配置中看到的，aspectJ 用于事务。
因此，我尝试通过更改我的 application-context.xml 以使用该proxy功能而不是aspectJ功能来测试另一种方法：
<?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:context="http://www.springframework.org/schema/context"
xmlns:neo4j="http://www.springframework.org/schema/data/neo4j"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/data/neo4j
http://www.springframework.org/schema/data/neo4j/spring-neo4j.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="graphDatabaseService" class="org.neo4j.kernel.EmbeddedGraphDatabase">
<constructor-arg value="target/neo4jgraph" />
</bean>
<neo4j:config graphDatabaseService="graphDatabaseService" />
<bean id="meetingServices" class="services.MeetingServices">
<property name="userRepository"><ref bean="userRepository"/></property>
<property name="meetingRepository"><ref bean="meetingRepository"/></property>
</bean>
<bean id="userServices" class="services.UserServices">
<property name="userRepository"><ref bean="userRepository"/></property>
</bean>
<tx:annotation-driven mode="proxy" />
<neo4j:repositories base-package="repositories"/>
<context:spring-configured/>
<context:annotation-config/>
</beans>
此配置工作得很好，因为@Transactional（其neo4jTransactionManager参数当然已被删除）注释现在已考虑到我的服务方法。
我的问题是，（无论我的项目是否可以使用简单的proxy方法）：
在我的第一个 Spring 配置中，我遗漏了什么或配置错误导致 aspectJ 事务功能失败？
我目前正在使用 Spring 提高我的技术技能，并阅读了几篇关于 aspectJ 的“加载时编织”的文章。这可能与我的问题有关吗？