我正在尝试使用 kotlinx.serialization 和 kotlin/native 来序列化多态类。我正在使用序列化指南中提供的示例:
val module = SerializersModule {
polymorphic(Project::class) {
subclass(OwnedProject::class)
}
}
val format = Json { serializersModule = module }
@Serializable
abstract class Project {
abstract val name: String
}
@Serializable
@SerialName("owned")
class OwnedProject(override val name: String, val owner: String) : Project()
fun main() {
val data: Project = OwnedProject("kotlinx.coroutines", "kotlin")
println(format.encodeToString(data))
}
此代码在使用 JVM 运行时可以工作，但是当使用 linuxX64 的 kotlin native 编译并运行时，它会抛出错误:
Uncaught Kotlin exception: kotlinx.serialization.SerializationException: Serializer for class 'Project' is not found. Mark the class as @Serializable or provide the serializer explicitly.
at kfun:kotlin.Throwable#<init>(kotlin.String?){} (0x294767)
at kfun:kotlin.Exception#<init>(kotlin.String?){} (0x28ea25)
at kfun:kotlin.RuntimeException#<init>(kotlin.String?){} (0x28e725)
at kfun:kotlin.IllegalArgumentException#<init>(kotlin.String?){} (0x28e925)
at kfun:kotlinx.serialization.SerializationException#<init>(kotlin.String?){} (0x350185)
at kfun:kotlinx.serialization.internal#<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a2d1c7d0cbc3cecbd8c7d0eccdd6f0c7c5cbd1d6c7d0c7c6e2c9cdd6cecbcc8cd0c7c4cec7c1d68ce9e1cec3d1d1" rel="noreferrer noopener nofollow">[email protected]</a><*>(){}kotlin.Nothing (0x36fa0d)
at kfun:kotlinx.serialization#<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3c4f594e555d505546594e7c575348505552124e595a50595f4812777f505d4f4f" rel="noreferrer noopener nofollow">[email protected]</a><0:0>(){0§<kotlin.Any>}kotlinx.serialization.KSerializer<0:0> (0x3505c8)
at kfun:kotlinx.serialization.serializer$serializerByKTypeImpl#internal (0x3512d2)
at kfun:kotlinx.serialization#serializer(kotlin.reflect.KType){}kotlinx.serialization.KSerializer<kotlin.Any?> (0x3503c8)
...
我是否理解错误，代码应该在两个平台上运行？ 如何使其在 native 上运行？
最佳答案
正如我从 github issues 中发现的那样目前的限制。
It is a current limitation that should be properly documented (cc @qwwdfsad ). Please try format.encodeToString(PolymorphicSerializer(Project::class), data). In case of sealed classes, it should work. If it doesnt, simply use format.encodeToString(Project.serializer(), data)
关于Kotlin - 无法序列化多态类。未找到序列化器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/63957510/