将Spring Data Neo4j更新为4.2.0.BUILD-SNAPSHOT
后出现了一些困难。特别是,我需要获取当前Session
实例来执行一些自定义查询。我一直在用
private Neo4jOperations getNeo4jOperations() {
return applicationContext.getBean(Neo4jOperations.class);
}
但Neo4jOperations
现已弃用,所以我尝试了
private Session Neo4jSession() {
return applicationContext.getBean(SessionFactory.class).openSession();
}
但有例外:
org.neo4j.ogm.exception.TransactionManagerException: Transaction is not current for this thread
org.neo4j.ogm.session.transaction.DefaultTransactionManager.rollback(DefaultTransactionManager.java:93)
org.neo4j.ogm.transaction.AbstractTransaction.rollback(AbstractTransaction.java:67)
org.neo4j.ogm.drivers.bolt.transaction.BoltTransaction.rollback(BoltTransaction.java:64)
org.neo4j.ogm.transaction.AbstractTransaction.close(AbstractTransaction.java:141)
org.springframework.data.neo4j.transaction.Neo4jTransactionManager.doCleanupAfterCompletion(Neo4jTransactionManager.java:311)
org.springframework.transaction.support.AbstractPlatformTransactionManager.cleanupAfterCompletion(AbstractPlatformTransactionManager.java:1016)
org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:811)
org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730)
org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:487)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
com.sun.proxy.$Proxy110.delete(Unknown Source)
那么我怎样才能获得当前的会话实例?
答案 0 :(得分:4)
4.2.0.M1
版本,但我认为它应该适用于4.2.0.BUILD-SNAPSHOT
@Bean
public SessionFactory getSessionFactory() {
return new SessionFactory(getConfiguration(), "com.yourbasepackage") {
};
}
@Bean
@Scope(value = "prototype", proxyMode = ScopedProxyMode.TARGET_CLASS)
public Session getSession() throws Exception {
return getSessionFactory().openSession();
}
还使用以下命令注释您的配置类:
@EnableTransactionManagement
然后你可以注入session
bean并随意使用它:
@Inject
Session session;
您可以看到升级到SDN 4.2完整指南here。
注意 :由于另一个问题,我最近创建了一个示例项目 github正确配置了此版本的
spring-data-neo4j
。我认为它可以帮助你作为配置 样品
希望有所帮助