Question

我有一些代码将json字符串转换为如下对象：

def apply(line: String): PairEvent = {
    val (name, json) = line.span(_ != ' ')
    name match {
      case "OpenTabEvent" => Serialization.read[OpenTabEvent](json)
      case "CloseTabEvent" => Serialization.read[CloseTabEvent](json)
      case "ChangeContentEvent" => Serialization.read[ChangeContentEvent](json)
      case "ChangeMasterRequest" => Serialization.read[ChangeMasterRequest](json)
      case "CreateFileEvent" => Serialization.read[CreateFileEvent](json)
      case "DeleteFileEvent" => Serialization.read[DeleteFileEvent](json)
      case "CreateDirEvent" => Serialization.read[CreateDirEvent](json)
      case "DeleteDirEvent" => Serialization.read[DeleteDirEvent](json)
      case "WatchingFiles" => Serialization.read[WatchingFiles](json)
      case _ =>
        ServerLogger.info("!!!!!!!!!!!!!!!!!!!!! unknown line from server: " + line)
        ???
    }
  }

你可以看到我硬编码了一些字符串并将它们用作转换为对象的类型。

有没有办法在没有硬编码的情况下做同样的事情？我不确定它是否可能，即使是宏。

Answer 1

您可以使用班级名称：

case OpenTabEvent.getClass.getSimpleName => Serialization.read[OpenTabEvent](json)

如何在没有硬编码的情况下使用字符串作为类型？

1 个答案: