迁移 Playframework 2.4.3 到 2.7.0 中的问题答案

【问题标题】：Issue in Migration Playframework 2.4.3 to 2.7.0迁移 Playframework 2.4.3 到 2.7.0 中的问题
【发布时间】：2019-05-06 11:45:19
【问题描述】：

应用程序从 play 2.4.3 迁移到 2.7.0 我正在使用以下插件。

scalaVersion := "2.11.6"
sbt.version=1.2.7
addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "4.1.0")

我得到以下堆栈跟踪：

java.lang.ArrayIndexOutOfBoundsException and Caused by: java.lang.ClassNotFoundException: play.Configuration
 [error]  Exception when compiling 1137 sources to /home/Documents/Codebase/target/scala-2.11/classes
[error] 65791
[error] scala.tools.asm.ClassWriter.findItemByIndex(ClassWriter.java:1755)
[error] scala.tools.asm.MethodWriter.getSize(MethodWriter.java:2045)
[error] scala.tools.asm.ClassWriter.toByteArray(ClassWriter.java:827)
[error] scala.tools.nsc.backend.jvm.GenASM$JBuilder.writeIfNotTooBig(GenASM.scala:529)
[error] scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder.genClass(GenASM.scala:1343)  ...     
[error] java.lang.NoClassDefFoundError: play/Configuration
[error]     at play.db.ebean.ModelsConfigLoader.apply(ModelsConfigLoader.java:27)
[error]     at play.db.ebean.ModelsConfigLoader.apply(ModelsConfigLoader.java:21)
[error]     at play.ebean.sbt.PlayEbean$.$anonfun$configuredEbeanModels$4(PlayEbean.scala:153)
[error]     at play.ebean.sbt.PlayEbean$.withClassLoader$1(PlayEbean.scala:130)...
[error] Caused by: java.lang.ClassNotFoundException: play.Configuration
[error]     at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
[error]     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[error]     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[error]     at play.db.ebean.ModelsConfigLoader.apply(ModelsConfigLoader.java:27)
[error]     at play.db.ebean.ModelsConfigLoader.apply(ModelsConfigLoader.java:21)
[error]     at play.ebean.sbt.PlayEbean$.$anonfun$configuredEbeanModels$4(PlayEbean.scala:153)...
[error] java.lang.ArrayIndexOutOfBoundsException: 65791
[error]     at scala.tools.asm.ClassWriter.findItemByIndex(ClassWriter.java:1755)
[error]     at scala.tools.asm.MethodWriter.getSize(MethodWriter.java:2045)
[error]     at scala.tools.asm.ClassWriter.toByteArray(ClassWriter.java:827)
[error]     at scala.tools.nsc.backend.jvm.GenASM$JBuilder.writeIfNotTooBig(GenASM.scala:529)
[error] a.a.ActorSystemImpl - Internal server error, sending 500 response
akka.http.impl.util.One2OneBidiFlow$OutputTruncationException: Inner flow was completed without producing result elements for 1 outstanding elements
    at akka.http.impl.util.One2OneBidiFlow$OutputTruncationException$.apply(One2OneBidiFlow.scala:22)
    at akka.http.impl.util.One2OneBidiFlow$OutputTruncationException$.apply(One2OneBidiFlow.scala:22)
    at akka.http.impl.util.One2OneBidiFlow$One2OneBidi$$anon$1$$anon$4.onUpstreamFinish(One2OneBidiFlow.scala:97)
    at akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:504)
    at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:378)
    at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:588)
    at akka.stream.impl.fusing.GraphInterpreterShell$AsyncInput.execute(ActorGraphInterpreter.scala:472)
    at akka.stream.impl.fusing.GraphInterpreterShell.processEvent(ActorGraphInterpreter.scala:563)
    at akka.stream.impl.fusing.ActorGraphInterpreter.akka$stream$impl$fusing$ActorGraphInterpreter$$processEvent(ActorGraphInterpreter.scala:745)
    at akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:760)

【问题讨论】：

标签： java scala sbt play-framework-2.7

【解决方案1】：

我从 2.4 迁移到 2.6。我相信对你来说一步一步做会更好。首先，更新到 2.5，然后更新到 2.6 和 ...。 Play Framework 记录了如何从一个版本迁移到下一个版本。链接： https://www.playframework.com/documentation/2.7.x/Migration25 https://www.playframework.com/documentation/2.7.x/Migration26 https://www.playframework.com/documentation/2.7.x/Migration27

但是对于你的具体问题https://www.playframework.com/documentation/2.7.x/Migration26#Scala-Configuration-API

【讨论】：