从Scala访问公共静态Java方法 [英] Accessing public static java method from scala

问题描述

我正在尝试在此处使用Java facebook库 http://restfb.com/#publishing 在scala play2应用程序中，但是当尝试调用下面的静态with方法时，它给了我"Compliation Error [期望的标识符，但找到了'with'.]".

I'm trying to use the Java facebook library here http://restfb.com/#publishing in a scala play2 app, but when trying to call the static with methods below, it gives me "Compliation Error [identifier expected but 'with' found.]".

val fbClass = classOf[FacebookType]
val param = Parameter.with("message", msg)
val attachment = BinaryAttachment.with("cat.png", stream)
val fbResp = facebookClient.publish("me/photos", fbClass, attachment, param)

我看到尝试调用受保护的静态方法时遇到问题，但是这些方法被定义为公共方法，如

I see that there is an issue trying to invoke protected static methods, but these are defined as public, as can be seen in the javadocs and the source. Am I doing something wrong?

推荐答案

with是Scala中的关键字，例如，用于混合多个特征.

with is a keyword in Scala, for example, used in mixin multiple traits.

class A extends B with C with D

因此，如果在Java库中将一个方法命名为with，则在调用该方法时需要用``(反引号)将其括起来:

So if a method is named with in Java library, you need surround it with `` (backtick) when you calling it:

BinaryAttachment.`with`("cat.png", stream)

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