我正在尝试将 Cassandra 1.1.9 over Kundera 与 Play 2.0 框架连接起来。我在 GitHub 上尝试了示例Getting-Started-in-5-minutes 。但我得到了这个例外:
[PersistenceLoaderException: com.impetus.kundera.utils.InvalidConfigurationException: Duplicate persistence-units for name: cassandra_pu. verify your persistence.xml file]
我刚刚将kundera-cassandra-2.2.1-jar-with-dependencies.jar添加到项目构建路径中。我应该向 application.conf 添加任何内容吗?