java - 获取 : java. 时 Play 错误 lang.UnsupportedClassVersionError : controllers/routes : Unsupported major. minor >version

Question

最近装了Java 1.6，玩2.10.0。当尝试在 play 框架上运行骨架 Web 应用程序时，我在页面请求时收到此错误。

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.UnsupportedClassVersionError: controllers/routes : Unsupported major.minor version 51.0]]

我已阅读有关不受支持的 major.minor 错误的 play framework 线程，并根据我的理解采取了行动。下载并安装 Java 1.6 版(我一直使用 1.7)后，我的环境如下所示，但我仍然收到相同的错误。我该如何摆脱这个错误？

java  1.6.0_33

javac 1.6.0_45

玩2.1.2(使用Java 1.6.0_33和Scala 2.10.0)

路径:

C:\Program Files (x86)\Silverfrost\FTN95;C:\Program Files (x86)\Silverfrost\FTN95\FTN95 for Microsoft Visual >Studio;C:\Users\zach\nodejs;C:\Users\zach\AppData\Roaming\npm;C:\Users\zach\NodeApps;C:\Users\zach\Downloads\play-2.1.2\play-2.1.2;C:\Program Files\Java\jdk1.6.0_45\bin;

我收到的错误如下...

异常...

2013-07-12 00:53:00,472 - [INFO] - from play in play-internal-execution-context-1 
Application started (Dev)

2013-07-12 00:53:00,781 - [ERROR] - from application in play-internal-execution-context-3 


! @6f0e5c888 - Internal server error, for (GET) [/] ->

play.api.Application$$anon$1: Execution exception[[RuntimeException: java.lang.UnsupportedClassVersionError: controllers/routes : Unsupported major.minor version 51.0]]
    at play.api.Application$class.handleError(Application.scala:289) ~[play_2.10.jar:2.1.2]
    at play.api.DefaultApplication.handleError(Application.scala:383) [play_2.10.jar:2.1.2]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$18$$anonfun$apply$18.apply(PlayDefaultUpstreamHandler.scala:310) [play_2.10.jar:2.1.2]
    at play.core.server.netty.PlayDefaultUpstreamHandler$$anonfun$18$$anonfun$apply$18.apply(PlayDefaultUpstreamHandler.scala:308) [play_2.10.jar:2.1.2]

Answer 1

我无法在 JDK1.6 环境下从 JDK 1.7 重新编译我的 Play/Scala 应用程序。降版本到 JDK1.6 并在 JDK 1.6 环境中消除/重新创建我的 Play/Scala 项目解决了错误。