将我的存储库(JAVA应用程序)推到heroku失败

Question

我正在构建一个在游戏框架2.2中的应用程序。当我在本地运行这个应用时，play run运行的很好，但是当我尝试用git上传到heroku时，推着heroku的主，它开始上传的很好，但是过了一段时间，它总是以以下错误结束：

       [info] downloading http://s3pository.heroku.com/maven-central/org/par
ed/parboiled-core/1.1.5/parboiled-core-1.1.5.jar ...
       [info]   [SUCCESSFUL ] org.parboiled#parboiled-core;1.1.5!parboiled-c
jar(bundle) (245ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/ow2
/asm/4.1/asm-4.1.jar ...
       [info]   [SUCCESSFUL ] org.ow2.asm#asm;4.1!asm.jar (198ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/ow2
/asm-tree/4.1/asm-tree-4.1.jar ...
       [info]   [SUCCESSFUL ] org.ow2.asm#asm-tree;4.1!asm-tree.jar (109ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/ow2
/asm-analysis/4.1/asm-analysis-4.1.jar ...
       [info]   [SUCCESSFUL ] org.ow2.asm#asm-analysis;4.1!asm-analysis.jar
ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/ow2
/asm-util/4.1/asm-util-4.1.jar ...
       [info]   [SUCCESSFUL ] org.ow2.asm#asm-util;4.1!asm-util.jar (354ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/sca
ang/scala-compiler/2.10.3/scala-compiler-2.10.3.jar ...
       [info]   [SUCCESSFUL ] org.scala-lang#scala-compiler;2.10.3!scala-com
r.jar (8070ms)
       [info] downloading http://s3pository.heroku.com/maven-central/org/sca
ang/jline/2.10.3/jline-2.10.3.jar ...
       [info]   [SUCCESSFUL ] org.scala-lang#jline;2.10.3!jline.jar (307ms)
       [info] Done updating.
       [info] Compiling 5 Scala sources and 11 Java sources to /tmp/scala_bu
ack_build_dir/target/scala-2.10/classes...
       [info] 'compiler-interface' not yet compiled for Scala 2.10.3. Compil
..
       [info]   Compilation completed in 23.023 s
       [error] /tmp/scala_buildpack_build_dir/app/utils/DatabaseConnection.j
45: illegal start of type
       [error]         List<String> results = new ArrayList<>();
       [error]                                              ^
       [error] 1 error
       [error] (compile:compile) javac returned nonzero exit code
       [error] Total time: 387 s, completed Mar 25, 2014 4:20:51 PM
 !     Failed to build app with sbt

 !     Push rejected, failed to compile Play 2.x - Java app

To git@heroku.com:glacial-plateau-2895.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:glacial-plateau-2895.git'

有人能帮我吗？我已经搜索过了，但我没有发现类似的问题可以帮助我。

提前谢谢。

Answer 1

   [error] /tmp/scala_buildpack_build_dir/app/utils/DatabaseConnection.java:45:
               illegal start of type
   [error]         List<String> results = new ArrayList<>();
   [error]                                             ^

这意味着Heroku环境中的JDK是Java 6，而代码是Java 7.升级;)

以下是如何..。

Answer 2

如果要在Heroku上使用java 7，则需要在项目的根文件夹中添加一个带有指令的文件。详细信息- https://devcenter.heroku.com/articles/add-java-version-to-an-existing-maven-app