跳到主要内容
版本：0.14

类型序列化

本页介绍 Scala 特定类型的序列化。

设置​

所有示例假设以下设置：

import org.apache.fory.Fory
import org.apache.fory.serializer.scala.ScalaSerializers

val fory = Fory.builder()
  .withScalaOptimizationEnabled(true)
  .build()

ScalaSerializers.registerSerializers(fory)

Case 类​

case class Person(github: String, age: Int, id: Long)

fory.register(classOf[Person])

val p = Person("https://github.com/chaokunyang", 18, 1)
println(fory.deserialize(fory.serialize(p)))

POJO 类​

class Foo(f1: Int, f2: String) {
  override def toString: String = s"Foo($f1, $f2)"
}

fory.register(classOf[Foo])

println(fory.deserialize(fory.serialize(new Foo(1, "chaokunyang"))))

Object 单例​

Scala object 单例被序列化和反序列化为同一个实例：

object MySingleton {
  val value = 42
}

fory.register(MySingleton.getClass)

val o1 = fory.deserialize(fory.serialize(MySingleton))
val o2 = fory.deserialize(fory.serialize(MySingleton))
println(o1 == o2) // true

集合​

完全支持 Scala 集合：

val seq = Seq(1, 2)
val list = List("a", "b")
val map = Map("a" -> 1, "b" -> 2)

println(fory.deserialize(fory.serialize(seq)))
println(fory.deserialize(fory.serialize(list)))
println(fory.deserialize(fory.serialize(map)))

元组​

支持所有 Scala 元组类型（Tuple1 到 Tuple22）：

val tuple2 = (100, 10000L)
println(fory.deserialize(fory.serialize(tuple2)))

val tuple4 = (100, 10000L, 10000L, "str")
println(fory.deserialize(fory.serialize(tuple4)))

枚举​

Scala 3 枚举​

enum Color { case Red, Green, Blue }

fory.register(classOf[Color])

println(fory.deserialize(fory.serialize(Color.Green)))

Scala 2 Enumeration​

object ColorEnum extends Enumeration {
  type ColorEnum = Value
  val Red, Green, Blue = Value
}

fory.register(Class.forName("scala.Enumeration.Val"))

println(fory.deserialize(fory.serialize(ColorEnum.Green)))

注意：对于 Scala 2 Enumeration，可能需要注册 scala.Enumeration.Val 或启用引用跟踪以避免 StackOverflowError。

Option​

val some: Option[Long] = Some(100)
println(fory.deserialize(fory.serialize(some)))

val none: Option[Long] = None
println(fory.deserialize(fory.serialize(none)))

Either​

val right: Either[String, Int] = Right(42)
println(fory.deserialize(fory.serialize(right)))

val left: Either[String, Int] = Left("error")
println(fory.deserialize(fory.serialize(left)))

嵌套类型​

完全支持复杂的嵌套结构：

case class Address(street: String, city: String)
case class Company(name: String, address: Address)
case class Employee(name: String, company: Company, tags: List[String])

fory.register(classOf[Address])
fory.register(classOf[Company])
fory.register(classOf[Employee])

val employee = Employee(
  "John",
  Company("Acme", Address("123 Main St", "Springfield")),
  List("developer", "scala")
)

println(fory.deserialize(fory.serialize(employee)))