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在我的播放应用程序上，我有一个包含公共文件路线的路线文件。最近我添加了-Ywarn-unused编译器标志，我收到了一些意想不到的警告。

脚步：

  1. activator new testingScalac（从模板列表中选择 play-scala）
  2. 添加到build.sbt标志scalacOptions ++= Seq("-Ywarn-unused")
  3. 添加到路由文件：

GET /favicon.ico controllers.Assets.at(path="/public",file="/images/favicon.ico")

GET /favicon.png controllers.Assets.at(path="/public",file="/images/favicon.png")

GET /robots.txt controllers.Assets.at(path="/public",file="robots.txt")

现在，运行sbt compile返回：

$ sbt compile
[info] Loading project definition from /Users/pedrorijo/git/testRepos/testingScalac/project
[info] Set current project to testingScalac (in build file:/Users/pedrorijo/git/testRepos/testingScalac/)
[info] Compiling 4 Scala sources and 1 Java source to /Users/pedrorijo/git/testRepos/testingScalac/target/scala-2.11/classes...
[warn] /Users/pedrorijo/git/testRepos/testingScalac/conf/routes:15: local val in method at is never used
[warn] GET        /favicon.ico            controllers.Assets.at(path="/public",file="/images/favicon.ico")
[warn] /Users/pedrorijo/git/testRepos/testingScalac/conf/routes:16: local val in method at is never used
[warn] GET        /favicon.png            controllers.Assets.at(path="/public",file="/images/favicon.png")
[warn] /Users/pedrorijo/git/testRepos/testingScalac/conf/routes:17: local val in method at is never used
[warn] GET        /robots.txt             controllers.Assets.at(path="/public",file="robots.txt")
[warn] three warnings found
[success] Total time: 10 s, completed Jul 5, 2016 3:11:28 PM

我在路由文件上做错了什么，还是播放框架/编译器错误（我在 github 中查看并找不到与此相关的任何内容）？

注意：它使用 play 2.5.4 但它也发生在 play 2.4.x

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1 回答 1

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创建了一个问题，似乎是Play框架问题：https ://github.com/playframework/playframework/issues/6302

与此同时，已经完成了可能修复的 PR：https ://github.com/playframework/playframework/pull/7538

于 2017-06-30T08:52:12.990 回答