使用 Scala 配置 Play 框架以使用 Neo4j 图形数据库

发布于 2024-12-11 02:09:13 字数 2052 浏览 5 评论 0原文

我在我的应用程序中使用 scala,它运行没有问题,但如果我在依赖项中添加 neo4j,它会引发 NoSuchMethod 错误。我什至没有在我的代码中引用任何 Neo4j 类...

我使用 scala 的 play 框架或 Neo4j 的 play 框架(Java)都没有问题,只是当两者一起使用时,它崩溃了...

我尝试过neo4j 1.4.2 和 1.5.M02 均无效。

感谢您的帮助~

Chris

dependency.yml

# Application dependencies

require:
- play
- play -> scala 0.9.1
- org.neo4j -> neo4j 1.4.2

异常详细信息:

play.exceptions.UnexpectedException: Unexpected Error
    at play.Invoker$Invocation.onException(Invoker.java:232)
    at play.Invoker$Invocation.run(Invoker.java:273)
    at Invocation.HTTP Request(Play!)
Caused by: java.lang.NoSuchMethodError: scala.collection.generic.GenericTraversableTemplate.flatten(Lscala/Function1;)Lscala/collection/Traversable;
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:18)
    at play.scalasupport.compiler.PlayScalaCompiler$$anonfun$scanFiles$1.apply(ScalaCompiler.scala:17)
    at play.scalasupport.compiler.PlayScalaCompiler$$anonfun$scanFiles$1.apply(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$$anonfun$scanFiles$1.apply(ScalaCompiler.scala:17)
    at play.scalasupport.compiler.PlayScalaCompiler$$anonfun$scanFiles$1.apply(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:15)
    at play.scalasupport.ScalaPlugin$$anonfun$templates$1.apply(ScalaPlugin.scala:178)
    at play.scalasupport.ScalaPlugin$$anonfun$templates$1.apply(ScalaPlugin.scala:177)
    at play.scalasupport.ScalaPlugin.templates(ScalaPlugin.scala:177)
    at play.scalasupport.ScalaPlugin.update(ScalaPlugin.scala:195)
    at play.scalasupport.ScalaPlugin.detectClassesChange(ScalaPlugin.scala:107)
    at play.plugins.PluginCollection.detectClassesChange(PluginCollection.java:358)
    at play.Play.detectChanges(Play.java:594)
    at play.Invoker$Invocation.init(Invoker.java:186)
    ... 1 more

I'm using scala in my app, it run without problem, but if I add neo4j in the dependencies, it throws a NoSuchMethod error. I didn't even have references to any neo4j classes in my code...

I have no problem using play framework with scala, or play framework (Java) with neo4j, just when using both together, it crash...

and I tried both neo4j 1.4.2 and 1.5.M02 to no avail.

thanks for any help~

Chris

dependencies.yml

# Application dependencies

require:
- play
- play -> scala 0.9.1
- org.neo4j -> neo4j 1.4.2

exception details:

play.exceptions.UnexpectedException: Unexpected Error
    at play.Invoker$Invocation.onException(Invoker.java:232)
    at play.Invoker$Invocation.run(Invoker.java:273)
    at Invocation.HTTP Request(Play!)
Caused by: java.lang.NoSuchMethodError: scala.collection.generic.GenericTraversableTemplate.flatten(Lscala/Function1;)Lscala/collection/Traversable;
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:18)
    at play.scalasupport.compiler.PlayScalaCompiler$anonfun$scanFiles$1.apply(ScalaCompiler.scala:17)
    at play.scalasupport.compiler.PlayScalaCompiler$anonfun$scanFiles$1.apply(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$anonfun$scanFiles$1.apply(ScalaCompiler.scala:17)
    at play.scalasupport.compiler.PlayScalaCompiler$anonfun$scanFiles$1.apply(ScalaCompiler.scala:15)
    at play.scalasupport.compiler.PlayScalaCompiler$.scanFiles(ScalaCompiler.scala:15)
    at play.scalasupport.ScalaPlugin$anonfun$templates$1.apply(ScalaPlugin.scala:178)
    at play.scalasupport.ScalaPlugin$anonfun$templates$1.apply(ScalaPlugin.scala:177)
    at play.scalasupport.ScalaPlugin.templates(ScalaPlugin.scala:177)
    at play.scalasupport.ScalaPlugin.update(ScalaPlugin.scala:195)
    at play.scalasupport.ScalaPlugin.detectClassesChange(ScalaPlugin.scala:107)
    at play.plugins.PluginCollection.detectClassesChange(PluginCollection.java:358)
    at play.Play.detectChanges(Play.java:594)
    at play.Invoker$Invocation.init(Invoker.java:186)
    ... 1 more

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评论(2

凝望流年 2024-12-18 02:09:13

事实证明,scala-library-2.9.0-1.jar 被包含为 Neo4j 的依赖项...

每次我运行 play dependency 时,它都会被下载到lib 文件夹,在我从文件夹中删除它后,它可以正常工作(到目前为止我只有用于启动和关闭数据库的代码)。

it turns out that scala-library-2.9.0-1.jar is included as a dependency for neo4j...

every time I run play dependencies it will be downloaded into the lib folder, after I delete it from the folder, it works without problem (so far I just have code for starting and shutting down of the DB).

罪歌 2024-12-18 02:09:13

Cypher 查询语言依赖于 Scala。对于 1.5 版本,我们会将该依赖项更新为 2.9.1。

The Cypher Query language depends on Scala. We will update that dependency to 2.9.1 for the 1.5 release.

~没有更多了~
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