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我在我的 Ubuntu 电脑上安装了 neo4j 2.0.0 M06 版本。它服务很好，我可以完美地使用新的网络浏览器。然后，我使用了示例 java 项目（https://github.com/neo4j/neo4j/blob/2.0.0-M06/community/embedded-examples/src/main/java/org/neo4j/examples/EmbeddedNeo4jWithIndexing.java ) 以嵌入式方式连接到数据库并添加一些节点。（顺便说一句，我确定我在启动 java 应用程序之前停止了 neo4j 服务）

我将程序添加的节点数更改为 100,000，应用程序在超出堆大小（GC 开销限制）时崩溃。

现在，当尝试启动 neo4j 时，出现启动错误：

2013-11-01 09:53:13.806+0000 DEBUG [API] Failed to start Neo Server on port [7474]
2013-11-01 10:00:52.865+0000 INFO  [API] Setting startup timeout to: 120000ms based on -1
2013-11-01 10:00:52.998+0000 DEBUG [API] 
org.neo4j.server.ServerStartupException: Starting Neo4j Server failed: org/neo4j/helpers    /Settings
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:193) ~[neo4j-        server-2.0.0-M06.jar:2.0.0-M06]
    at org.neo4j.server.Bootstrapper.start(Bootstrapper.java:87) [neo4j-server-2.0.0-    M06.jar:2.0.0-M06]
    at org.neo4j.server.Bootstrapper.main(Bootstrapper.java:50) [neo4j-server-2.0.0-        M06.jar:2.0.0-M06]
Caused by: java.lang.NoClassDefFoundError: org/neo4j/helpers/Settings
    at org.neo4j.shell.ShellSettings.<clinit>(ShellSettings.java:42) ~[neo4j-shell-        2.0.0-M06.jar:2.0.0-M06]
    at                     org.neo4j.server.database.CommunityDatabase.getDbTuningPropertiesWithServerDefaults(Communit    yDatabase.java:106) ~[neo4j-server-2.0.0-M06.jar:2.0.0-M06]
    at org.neo4j.server.enterprise.EnterpriseDatabase.start(EnterpriseDatabase.java:89)          ~[neo4j-server-enterprise-2.0.0-M06.jar:2.0.0-M06]
    at org.neo4j.server.AbstractNeoServer.start(AbstractNeoServer.java:141) ~[neo4j-        server-2.0.0-M06.jar:2.0.0-M06]
    ... 2 common frames omitted
 Caused by: java.lang.ClassNotFoundException: org.neo4j.helpers.Settings
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366) ~[na:1.7.0_45]
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ~[na:1.7.0_45]
    at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_45]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354) ~[na:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425) ~[na:1.7.0_45]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ~[na:1.7.0_45]
    ... 6 common frames omitted
2013-11-01 10:00:53.000+0000 DEBUG [API] Failed to start Neo Server on port [7474]
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1 回答 1

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我发现了jar文件的问题。不幸的是，在解决了 jar 文件问题后，我不得不重新安装 neo4j 才能使服务再次工作

于 2014-01-01T14:36:26.960 回答