Java Play 框架 - NoClassDefFoundError：播放/配置

Question

我刚刚开始使用 Java Play 框架并取得了一些进展，但现在我打算添加 JavaEbean OEM，我浏览了文档，但仍然收到错误NoClassDefFoundError: play/Configuration应用程序.conf    # This is the main configuration file for the application.    # https://www.playframework.com/documentation/latest/ConfigFile    ebean.default = ["models.*"]插件.sbtaddSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.0")addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "4.1.0")我的模型：import io.ebean.Model;public class Book extends Model {..}构建.sbtname := """BookStoreApp"""organization := "com.example"version := "1.0-SNAPSHOT"lazy val root = (project in file(".")).enablePlugins(PlayJava, PlayEbean)scalaVersion := "2.12.8"libraryDependencies += guice

Answer 1

您需要更改playorebean版本。

play已更改 2.7 中的默认类Configuration：https ://www.playframework.com/documentation/2.7.x/JavaConfigMigration26 。

ebean插件版本及其对应于play： https : //github.com/playframework/play-ebean#releases

所以接下来

addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "4.1.0")

必须改为

addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.6.21")
addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "4.1.0")

或者

addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.0")
addSbtPlugin("com.typesafe.sbt" % "sbt-play-ebean" % "5.0.0")