播放不会将Java列表转换为Scala列表 [英] Play doesn't convert java-list to scala-list

问题描述

我有一个控制器，它按照与示例中相同的方式将模型对象的Java列表移交给视图.

I have a controller which hands a java-list of model-objects to the view exactly the way like it's done in the examples.

编译器抛出一个错误，它无法从java.util.List转换为scala.collection.immutable.List.我不知道该怎么办.

The compiler throws an error that it can't convert from java.util.List to scala.collection.immutable.List. I have no clue what I should do.

[error] /myapp/myappsubprojects/frontend/app/controllers/frontend/MyController.java:15: error: method render in class linklist cannot be applied to given types;
[error]         return ok(linklist.render("link test", Link.findAll()));
[error]                           ^
[error]   required: String,scala.collection.immutable.List<Link>
[error]   found: String,java.util.List<Link>
[error]   reason: actual argument java.util.List<Link> cannot be converted to scala.collection.immutable.List<Link> by method invocation conversion
[error] 1 error

注意:我使用的是子项目(通用，前端，后端)，我很难使所有项目正常运行.可能与此有关.

Note: I'm using subprojects (common, frontend, backend) and I had a hard time to make everything run properly. Probably it's related to that.

推荐答案

我去钓鱼了一些细节，最终(幸运地)在我的

I went fishing for details and ended up (luckily) answering the question in my comment

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