我对Scala感到愚蠢:(我在调用和Scala类型方面有一些帮助。但新的再次出现:
class TagCalculation {
def test(arg1: java.lang.Integer, arg2: String, arg3: scala.collection.immutable.$colon$colon[Any]) = "test mix2"
}
val getTest = new TagCalculation
val arg1: java.lang.Integer = 10
val arg2: String = "foobar"
val arg3: scala.collection.immutable.$colon$colon[Any] = scala.collection.immutable.$colon$colon.apply('z', List("foo", 10))
//val test = Array(arg1,arg2,arg3) It's Ok if i use that.
var calcParamsArray : scala.collection.mutable.ArrayBuffer[Any] = scala.collection.mutable.ArrayBuffer()
calcParamsArray += arg1
calcParamsArray += arg2
calcParamsArray += arg3
val argtypes4 = calcParamsArray.map(_.getClass)
val method4 = getTest.getClass.getMethod("test", argtypes4: _*)
method4.invoke(getTest,calcParamsArray: _*) //also errors in toArray and toSqe
输出:
阶> method4.invoke(getTest,calcParamsArray:_ ):29: 错误:类型不匹配;发现: scala.collection.mutable.ArrayBuffer [Any] required:Seq [Object] method4.invoke(getTest,calcParamsArray:_ )
有什么想法解决这个问题?
答案 0 :(得分:2)
错误消息明确说明
found : scala.collection.mutable.ArrayBuffer[Any]
required: Seq[Object]
您正在传递ArrayBuffer[Any]
,但必需的是Seq[Object]
将代码的最后一行更改为
method4.invoke(getTest,calcParamsArray.asInstanceOf[Seq[Object]]: _*)
应该有效