我是 Kotlin 的新手,并试图从 JSON 中解析一组枚举:
val convertColor = object: Converter<Color> {
override fun toJson(value: Color): String? = when(value) {
Color.R -> "red"
Color.G -> "green"
Color.B -> "blue"
else -> null
}
override fun fromJson(jv: JsonValue): Color = when(jv.inside) {
"red" -> Color.R
"green" -> Color.G
"blue" -> Color.B
else -> throw IllegalArgumentException("Invalid Color")
}
}
enum class Color { R, G, B }
data class Root (val colors: Array<Color>)
然后我尝试解析一个样本:
val klaxon = Klaxon().converter(convertColor)
val result = klaxon.parse<Root>("""
{
"colors": ["red", "green", "blue"]
}
""")
但是我得到了这个运行时异常:
Exception in thread "main" java.lang.IllegalArgumentException: array element type mismatch
似乎转换器不适用于数组元素。