Guice 可以注入 Scala 对象吗
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原文地址: http://stackoverflow.com/questions/13791815/
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Can Guice inject Scala objects
提问by Hbf
回答by Hbf
Some research on Google revealed that you can accomplish this as follows (the code that follows is a ScalaTestunit test):
Google 上的一些研究表明，您可以按如下方式完成此操作（以下代码是ScalaTest单元测试）：
import org.junit.runner.RunWith
import org.scalatest.WordSpec
import org.scalatest.matchers.MustMatchers
import org.scalatest.junit.JUnitRunner
import com.google.inject.Inject
import com.google.inject.Module
import com.google.inject.Binder
import com.google.inject.Guice
import uk.me.lings.scalaguice.ScalaModule
@RunWith(classOf[JUnitRunner])
class GuiceSpec extends WordSpec with MustMatchers {
"Guice" must {
"inject into Scala objects" in {
val injector = Guice.createInjector(new ScalaModule() {
def configure() {
bind[String].toInstance("foo")
bind[GuiceSpec.type].toInstance(GuiceSpec)
}
})
injector.getInstance(classOf[String]) must equal("foo")
GuiceSpec.get must equal("foo")
}
}
}
object GuiceSpec {
@Inject
var s: String = null
def get() = s
}
This assumes you are using scala-guiceand ScalaTest.
这假设您使用的是scala-guice和ScalaTest。
回答by Swayam
The above answer is correct, but if you don't want to use ScalaGuiceExtensions, you can do the following:
上面的回答是正确的，但是如果你不想使用ScalaGuiceExtensions，你可以执行以下操作：
val injector = Guice.createInjector(new ScalaModule() {
def configure() {
bind[String].toInstance("foo")
}
@Provides
def guiceSpecProvider: GuiceSpec.type = GuiceSpec
})
