java Play 框架 @routes.Assets.at 编译错误
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Play Framework @routes.Assets.at Compilation Error
提问by Daniel Romero
I'm using Play 2.4.0 and I've been trying to follow the tutorial from the main page: https://playframework.com/which is for Play 2.3 and after solving a couple of issues regarding changes in the Ebean ORM from version 2.3 to 2.4, I'm stuck with the following error:
我正在使用 Play 2.4.0，我一直在尝试按照主页上的教程进行操作：https: //playframework.com/ 这是针对 Play 2.3 的，并且在解决了有关 Ebean ORM 更改的几个问题之后从 2.3 到 2.4 版本，我遇到了以下错误：
Compilation error
value at is not a member of controllers.ReverseAssets
My index.scala.html:
我的index.scala.html：
@(message: String)
@main("Welcome to Play") {
<script type='text/javascript' src="@routes.Assets.at("javascripts/index.js")"></script>
<form action="@routes.Application.addPerson()" method="post">
<input type="text" name="name" />
<button>Add Person</button>
</form>
<ul id="persons">
</ul>
}
And my routesfile:
还有我的routes文件：
# Routes
# This file defines all application routes (Higher priority routes first)
# ~~~~
# Home page
GET / controllers.Application.index()
POST /person controllers.Application.addPerson()
GET /persons controllers.Application.getPersons()
# Map static resources from the /public folder to the /assets URL path
GET /assets/*file controllers.Assets.versioned(path="/public", file: Asset)
I have this same example working ok with Play 2.3.9
我有同样的例子，可以在 Play 2.3.9 上正常工作
And I can't see anything different about working with public assets in the docs for the 2.4.0: https://www.playframework.com/documentation/2.4.0/Assets
在 2.4.0 的文档中，我看不出使用公共资产有什么不同：https: //www.playframework.com/documentation/2.4.0/Assets
So... any help would be appreciated.
所以......任何帮助将不胜感激。
回答by Roman
Alright, to sum up the solution: Play lets you serve your assets in two different ways. The old fashioned and the new fingerprinted method introduced with sbt-web. In either case make sure you use right call in your view files:
好的，总结一下解决方案：Play 让您以两种不同的方式提供您的资产。sbt-web 引入的旧式和新式指纹识别方法。无论哪种情况，请确保在视图文件中使用正确的调用：
Fingerprinted assets
指纹资产
This is the recommended way to serve assets in play. Fingerprinted assets make use of an aggressive caching strategy. You can read more about this topic here: https://playframework.com/documentation/2.4.x/Assets
这是在游戏中提供资产的推荐方式。指纹资产利用积极的缓存策略。您可以在此处阅读有关此主题的更多信息：https: //playframework.com/documentation/2.4.x/Assets
routes config:
路由配置：
GET /assets/*file controllers.Assets.versioned(path="/public", file: Asset)
Make sure the type of fileis indicated as Asset
确保类型file表示为Asset
call in views:
调用视图：
@routes.Assets.versioned("an_asset")
Old fashioned assets
老式资产
This is basically the method used before the introduction of sbt-web.
这基本上是引入sbt-web之前使用的方法。
routes config:
路由配置：
GET /assets/*file controllers.Assets.at(path="/public", file)
call in views:
调用视图：
@routes.Assets.at("an_asset")
