使用Java程序更新Neo4j数据库

Question

我正在使用Java程序通过输入一个Excel文件创建Neo4j图形数据库（.DB文件）。我可以通过另一个Excel文件更新此.DB文件，但是一旦在Neo4j中打开此.DB文件后，我无法通过输入另一个Excel文件来更新此现有数据库，它会显示异常。

Exception in thread "main" java.lang.RuntimeException: Error starting org.neo4j.kernel.EmbeddedGraphDatabase, D:\innoneuron\Transform\Feature1_Automatic_Tagging\Feature1_Automatic_Tagging\test.db
    at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:366)
    at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:59)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:91)
    at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:181)
    at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:71)
    at feature3.AutomatedGraph.startDb(AutomatedGraph.java:88)
    at feature3.AutomatedGraph.main(AutomatedGraph.java:50)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.transaction.XaDataSourceManager@5a4aa2f2' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:513)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
    at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:343)
    ... 6 more
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component 'org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource@f0f2775' was successfully initialized, but failed to start. Please see attached cause exception.
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:513)
    at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
    at org.neo4j.kernel.impl.transaction.XaDataSourceManager.start(XaDataSourceManager.java:164)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:507)
    ... 8 more
Caused by: org.neo4j.kernel.impl.storemigration.StoreUpgrader$UpgradingStoreVersionNotFoundException: 'neostore.nodestore.db' does not contain a store version, please ensure that the original database was shut down in a clean state.
    at org.neo4j.kernel.impl.storemigration.UpgradableDatabase.checkUpgradeable(UpgradableDatabase.java:78)
    at org.neo4j.kernel.impl.storemigration.StoreMigrator.needsMigration(StoreMigrator.java:135)
    at org.neo4j.kernel.impl.storemigration.StoreUpgrader.getParticipantsEagerToMigrate(StoreUpgrader.java:268)
    at org.neo4j.kernel.impl.storemigration.StoreUpgrader.migrateIfNeeded(StoreUpgrader.java:143)
    at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.start(NeoStoreXaDataSource.java:344)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:507)
    ... 11 more

有没有办法使用不同的输入Excel文件更新这个.DB文件？ 提前感谢。

- vin

Answer 1

我在打开数据库后更新它时遇到的问题是由于安装的Neo4j数据库版本与项目中使用的jar文件版本不同。 请使用与Neo4j版本相同的jar文件版本。 谢谢。

- vin

Answer 2

根据异常的初始原因：

请确保原始数据库在干净的状态下关闭

你确定在创建结束时正确地关闭了数据库，并且在导入第一个Excel文件时吗？在退出之前，您需要调用GraphDatabaseService.shutdown()。

- Frank Pavageau

---

是的，我在程序创建结束时关闭了数据库。但问题是，一旦在Neo4j中打开了.DB文件，我就无法更新它。但如果我不打开这个.DB文件，那么它是可以更新的。我正在使用Neo4j 3.0.6（exe）版本。 - vin

你应该更新你的问题，加入相关场景的那一部分，然后描述导致无法重新打开数据库的全部步骤。 - Frank Pavageau

我已经更新了问题，希望能得到能够帮助我解决问题的答案。我尝试过关闭数据库后再试，但问题仍未解决。 - vin