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我安裝了titan-cassandra-0.4.4
,我可以完美地運行cassandra和gremlin(本地節點)。如何連接Java與泰坦與嵌入式卡桑德拉
我想在Java中測試一個算法,所以我需要將Java連接到泰坦。 我POM是:
<dependency>
<groupId>com.thinkaurelius.titan</groupId>
<artifactId>titan-core</artifactId>
<version>0.4.4</version>
</dependency>
我的代碼是:
BaseConfiguration baseConfiguration = new BaseConfiguration();
baseConfiguration.setProperty("storage.backend", "cassandra");
baseConfiguration.setProperty("storage.hostname", "127.0.0.1");
baseConfiguration.setProperty("storage.tablename","test");
TitanGraph titanGraph = TitanFactory.open(baseConfiguration);
在最後一行中,錯誤的是:
Exception in thread "main" java.lang.NoClassDefFoundError: com/netflix/astyanax/connectionpool/exceptions/ConnectionException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.thinkaurelius.titan.diskstorage.Backend.getStorageManager(Backend.java:202)
at com.thinkaurelius.titan.diskstorage.Backend.<init>(Backend.java:97)
at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.getBackend(GraphDatabaseConfiguration.java:398)
at com.thinkaurelius.titan.graphdb.database.StandardTitanGraph.<init>(StandardTitanGraph.java:78)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:60)
at Connecting.main(Connecting.java:20)
Caused by: java.lang.ClassNotFoundException: com.netflix.astyanax.connectionpool.exceptions.ConnectionException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 8 more
我第一次開始卡桑德拉的話,泰坦gremlin.sh ,最後運行java代碼。我不知道我是否錯過了一些東西?
提前致謝!