播放框架: UnexpectedException:在应用类play.classloading.enhancers.LVEnhancer时

Question

我第一次在Ubuntu 14上使用了一个现有项目的Play框架。当我试图运行应用程序时，我会得到以下错误：

Internal Server Error (500) for request GET /

Oops: UnexpectedException
Unexpected error : While applying play.CorePlugin@44821a96 on models.BookingDTO, caused by exception UnexpectedException: While applying class play.classloading.enhancers.LVEnhancer on models.BookingDTO

play.exceptions.UnexpectedException: While applying play.CorePlugin@44821a96 on models.BookingDTO
   at play.plugins.PluginCollection.enhance(PluginCollection.java:582)
   at play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:242)
   at play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:164)
   at play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:431)
   at play.Play.start(Play.java:527)
   at play.Play.detectChanges(Play.java:647)
   at play.Invoker$Invocation.init(Invoker.java:205)
   at Invocation.HTTP Request(Play!)
Caused by: play.exceptions.UnexpectedException: While applying class play.classloading.enhancers.LVEnhancer on models.BookingDTO
   at play.CorePlugin.enhance(CorePlugin.java:314)
   at play.plugins.PluginCollection.enhance(PluginCollection.java:577)
   ... 7 more
Caused by: play.exceptions.UnexpectedException: LVEnhancer: cannot enhance the behavior 'models.BookingDTO.findAllNextBookings(java.lang.String)'
   at play.classloading.enhancers.LVEnhancer.enhanceThisClass(LVEnhancer.java:112)
   at play.CorePlugin.enhance(CorePlugin.java:309)
   ... 8 more
Caused by: java.lang.NullPointerException
   at bytecodeparser.CodeParser.parse(CodeParser.java:53)
   at bytecodeparser.analysis.stack.StackAnalyzer.init(StackAnalyzer.java:91)

怎么了？

Answer 1

非常感谢你的回答。

我找到了解决方案:我没有与项目文件不匹配的的版本。

在PlayFramework1.3xxx中，-3.20xxx没有工作。我不得不安装javassist-3.19xxx