NoClassDefFoundError: java.sql.Date when running Play 2.6 using gradle plugin

Question

有没有人对 play gradle 插件有好感？我正在尝试运行 Play Framework 2.6 启动项目。我可以从 SBT 运行正常，但是当我从 gradle:运行:

时出现以下错误

play.api.UnexpectedException: Unexpected exception[NoClassDefFoundError: java/sql/Date]
        at play.core.server.DevServerStart$$anon.reload(DevServerStart.scala:190)
        at play.core.server.DevServerStart$$anon.get(DevServerStart.scala:124)
        at play.core.server.AkkaHttpServer.handleRequest(AkkaHttpServer.scala:202)
        at play.core.server.AkkaHttpServer.$anonfun$createServerBinding(AkkaHttpServer.scala:117)
        at akka.stream.impl.fusing.MapAsync$$anon.onPush(Ops.scala:1194)
        at akka.stream.impl.fusing.GraphInterpreter.processPush(GraphInterpreter.scala:519)
        at akka.stream.impl.fusing.GraphInterpreter.processEvent(GraphInterpreter.scala:482)
        at akka.stream.impl.fusing.GraphInterpreter.execute(GraphInterpreter.scala:378)
        at akka.stream.impl.fusing.GraphInterpreterShell.runBatch(ActorGraphInterpreter.scala:

我正在使用 Java 1.8 和以下 build.gradle:

plugins {
    id 'play'
    id 'idea'
}

def playVersion = "2.6.13"
def scalaVersion = System.getProperty("scala.binary.version", /* default = */ "2.12")

model {
    components {
        play {
            platform play: playVersion, scala: scalaVersion, java: '1.8'
            injectedRoutesGenerator = true

            sources {
                twirlTemplates {
                    defaultImports = TwirlImports.JAVA
                }   
            }   
        }   
    }   
}

dependencies {
    play "com.typesafe.play:play-guice_$scalaVersion:$playVersion"
    play "com.typesafe.play:play-logback_$scalaVersion:$playVersion"
    play "com.h2database:h2:1.4.196"

    playTest "org.assertj:assertj-core:3.6.2"
    playTest "org.awaitility:awaitility:2.0.0"
}

repositories {
    jcenter()
    maven {
        name "lightbend-maven-releases"
        url "https://repo.lightbend.com/lightbend/maven-release"
    }   
    ivy {
        name "lightbend-ivy-release"
        url "https://repo.lightbend.com/lightbend/ivy-releases"
        layout "ivy"
    }   
}

Answer 1

我发现了问题，我的 $JAVA_HOME 设置为我的 Java 9 路径，但 java/javac 设置为 Java 8。这导致我的 gradle 使用错误的 java 版本。修复我的 $JAVA_HOME 后，它可以正常工作。

我会留下这个以防其他人遇到这个问题。

Answer 2

您需要设置 java_home 才能使用 Java 1.8 版本。显然，play gradle 插件需要一个 java 家。

export JAVA_HOME=YOUR_JAVA_LOCATION

$ source .bash_profile

$ echo $JAVA_HOME

NoClassDefFoundError: java.sql.Date when running Play 2.6 using gradle plugin

NoClassDefFoundError: java.sql.Date when running Play 2.6 using gradle plugin

gradle

playframework

playframework-2.6