play 项目报错javassist.bytecode.DuplicateMemberException: duplicate method: count in models.t_bills_play.exceptions.unexpectedexception while applying-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_41749698/article/details/79584424

本文记录了一次解决javassist.bytecode.DuplicateMemberException异常的过程，包括错误定位、环境配置检查及重启应用后的堆栈溢出问题。通过调整play框架下的JPA插件配置和修复模板错误，最终解决了启动过程中出现的问题。

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1、报错1

javassist.bytecode.DuplicateMemberException: duplicate method: count in models.t_bills

Oops: DuplicateMemberException
An unexpected error occured caused by exception DuplicateMemberException: duplicate method: count in models.t_bills

play.exceptions.UnexpectedException: While applying play.db.jpa.JPAPlugin@1fec306b on models.t_bills
	at play.plugins.PluginCollection.enhance(PluginCollection.java:556)
	at play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
	at play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:167)
	at play.classloading.ApplicationClassloader.getAllClasses(ApplicationClassloader.java:431)
	at play.Play.start(Play.java:523)
	at play.Play.detectChanges(Play.java:637)
	at play.Invoker$Invocation.init(Invoker.java:198)
	at Invocation.HTTP Request(Play!)
Caused by: javassist.bytecode.DuplicateMemberException: duplicate method: count in models.t_bills
	at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.java:593)
	at javassist.bytecode.ClassFile.addMethod(ClassFile.java:577)
	at javassist.CtClassType.addMethod(CtClassType.java:1235)
	at play.db.jpa.JPAEnhancer.enhanceThisClass(JPAEnhancer.java:29)
	at play.db.jpa.JPAPlugin.enhance(JPAPlugin.java:102)
	at play.plugins.PluginCollection.enhance(PluginCollection.java:551)
	... 7 more
17:15:57,330 ERROR ~ 

@77a7fpfmi
Error during the 500 response generation

Template not found (In /app/views/errors/500.html around line 10)
The template tags/500.html or tags/500.tag does not exist.

play.exceptions.TemplateNotFoundException: Template not found : tags/500.html or tags/500.tag
	at play.templates.GroovyTemplate$ExecutableTemplate.invokeTag(GroovyTemplate.java:378)
	at /app/views/errors/500.html.(line:10)
	at play.templates.GroovyTemplate.internalRender(GroovyTemplate.java:247)
	at play.templates.Template.render(Template.java:26)
	at play.templates.GroovyTemplate.render(GroovyTemplate.java:202)
	at play.server.PlayHandler.serve500(PlayHandler.java:784)
	at Invocation.HTTP Request(Play!)i

1、因为我的项目是从别的地方拷过来的所以一要修改sp2p_yxb.launch 文件就是eclipse 运行文件play的位置