serialization - Kotlin 序列化 : "Unresolved reference: serializer"

Question

我正在尝试 Kotlin 序列化。按照说明进行设置后，我得到了 Unresolved reference: serializer使用此代码构建错误:

val serializer : KSerializer<User> = User.serializer()

我推测编译器插件以某种方式没有启动，但看不到我在设置中遗漏了什么。

这是我的 build.gradle.kts :

buildscript {
    val kotlinVer: String by extra("1.3.20")
    repositories { jcenter() }

    dependencies {
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVer")
        classpath("org.jetbrains.kotlin:kotlin-serialization:$kotlinVer")
    }
}

plugins {
    id("org.jetbrains.kotlin.jvm").version("1.3.20")

    application

    "kotlin"
    "kotlinx-serialization"
}

repositories {
    jcenter()
    maven("https://kotlin.bintray.com/kotlinx")
}

dependencies {
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
    compile("org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.10.0")

    testImplementation("org.jetbrains.kotlin:kotlin-test")

    testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
}

application {
    mainClassName = "com.digizen.AppKt"
}

Answer 1

在 plugins , 你不能像刚才那样只放一个字符串，the options are (for .kts ) :

plugins {
    `«plugin id»`                                             // (1)
    id(«plugin id»)                                           // (2)
    id(«plugin id») version «plugin version» [apply «false»]  // (3)
} 

我认为 Kotlin 插件本身正在激活是因为 id("org.jetbrains.kotlin.jvm").version("1.3.20") ，不是因为 "kotlin" .

自述文件说

Gradle (with plugins block)

You can setup serialization plugin with the kotlin plugin using Gradle plugins DSL instead of traditional apply plugin:

plugins {
    id 'kotlin-multiplatform' version '1.3.20'
    id 'kotlinx-serialization' version '1.3.20'
}

In this case, since serialization plugin is not published to Gradle plugin portal yet, you'll need to add plugin resolution rules to your settings.gradle:

pluginManagement {
    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "kotlin-multiplatform") {
                useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
            }
            if (requested.id.id == "kotlinx-serialization") {
                useModule("org.jetbrains.kotlin:kotlin-serialization:${requested.version}")
            }
        }
    }
}

Don't forget to drop classpath dependency on the plugin from the buildscript dependencies, otherwise, you'll get an error about conflicting versions.

所以最小的变化是从 plugins 中删除两个字符串阻止和
添加

apply plugin: 'kotlinx-serialization'

反而。