注入scala对象 [英] Inject in scala object

问题描述

我正在使用Play Framework 2.5，并尝试将WSClient注入控制器中使用的scala对象中.

I'm using Play framework 2.5 and try to inject WSClient in a scala object used in my controllers.

import play.api.libs.concurrent.Execution.Implicits.defaultContext

    object MyObject {

        @Inject
        var ws: WSClient = null

        def doSomething() = { // use wsclient }

    }

我在多个控制器中使用MyObject，并且在调用doSomething()时wsclient为null.

I use MyObject in several controllers and when calling doSomething() wsclient is null.

推荐答案

您应将MyObject定义为类，并向其注入wsclient:

You should define MyObject as class and inject wsclient to it:

class MyObject @Inject()(ws: WSClient) {
    def doSomething() = { /* use wsclient */ }
}

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