Neo4j 2.0，java - 無法使用較舊的數據存儲版本啟動Neo4j

Question

我曾經在我的java maven項目中使用neo4j-community-1.9.4。 我切換到2.0版並在2.0中完成了新的db。 當我運行相同的Java代碼時，我收到錯誤：

Exception in thread "main" org.neo4j.kernel.impl.storemigration.UpgradeNotAllowedByConfigurationException: Failed to start Neo4j with an older data store version. To enable automatic upgrade, please set configuration parameter "allow_store_upgrade=true"
at org.neo4j.kernel.impl.storemigration.ConfigMapUpgradeConfiguration.checkConfigurationAllowsAutomaticUpgrade(ConfigMapUpgradeConfiguration.java:39)
at org.neo4j.kernel.impl.storemigration.StoreUpgrader.attemptUpgrade(StoreUpgrader.java:64)
at org.neo4j.kernel.impl.nioneo.store.StoreFactory.tryToUpgradeStores(StoreFactory.java:104)
at org.neo4j.kernel.impl.nioneo.store.StoreFactory.newNeoStore(StoreFactory.java:86)
at org.neo4j.kernel.impl.nioneo.xa.NeoStoreXaDataSource.<init>(NeoStoreXaDataSource.java:232)
at org.neo4j.kernel.InternalAbstractGraphDatabase.create(InternalAbstractGraphDatabase.java:423)
at org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:226)
at org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:79)
at org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:70)
at org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:205)
at org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:56)
at tools.Import.main(Import.java:32)

任何的想法？ 謝謝。

Answer 1

Neo4j 2.0需要顯式商店升級，因為舊版本將無法再在升級后的商店上運行。 例外情況提及：

Failed to start Neo4j with an older data store version. To enable automatic upgrade, please set configuration parameter "allow_store_upgrade=true"

只需將allow_store_upgrade=true添加到neo4j.properties文件中，然后再次啟動數據庫。 然后它應該進行升級。 你可以在這里閱讀更多相關信息：

http://docs.neo4j.org/chunked/stable/deployment-upgrading.html#explicit-upgrade

Answer 2

解決了，我取代了春天的依賴：

<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-neo4j</artifactId>
<version>2.3.3.RELEASE</version>
</dependency>

這樣：

<dependency>
<groupId>org.neo4j</groupId>
<artifactId>neo4j</artifactId>
<version>2.0.0</version>
</dependency>

Answer 3

對於Windows上的社區版，

• 單擊選項，數據庫配置，編輯
• 尋找allow_store_upgrade