Question

我正在使用Kotlin / JS开发一个Web应用程序，并且试图使用Kotlin库“ com.beust：klaxon：3.0.1”（我已经明确编译了lib的依赖项，并将其从lib，以减少版本冲突的可能性，如果没有显式编译就无法成功）

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
    implementation('com.beust:klaxon:3.0.1') {
        exclude group: 'org.jetbrains.kotlin'
    }
}

但是我不能使用它：

成绩输出：

19:40:45: Executing task 'build'...

:compileJava NO-SOURCE
e: .../School-Web-Project/frontend/src/requests/Abstraction.kt: (3, 8): Unresolved reference: com
e: .../School-Web-Project/frontend/src/requests/Abstraction.kt: (20, 57): Unresolved reference: Klaxon
:compileKotlin2Js FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileKotlin2Js'.
> Compilation error. See log for more details

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s
1 actionable task: 1 executed
Compilation error. See log for more details
19:40:48: Task execution finished 'build'.

关于错误是什么，我没有线索。我已经运行gradle clean并启用了缓存，然后重新启动。

谢谢您的时间。

完整文件：

build.gradle

version '1.0'

buildscript {
    ext.kotlin_version = '1.2.50'
    ext.web_dir = "${projectDir}/web/"
    repositories {
        jcenter()
        mavenCentral()
        maven { url "https://plugins.gradle.org/m2/" }
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.gradle:build-scan-plugin:1.14"
    }
}

apply plugin: 'kotlin2js'
apply plugin: 'com.gradle.build-scan'

sourceSets {
    main.kotlin.srcDirs += "src/"
}

repositories {
    mavenCentral()
    jcenter()
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-js:$kotlin_version"
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
    implementation('com.beust:klaxon:3.0.1') {
        exclude group: 'org.jetbrains.kotlin'
    }
}

clean.doFirst() {
    delete("${web_dir}")
}

build.doLast() {
    // Copy kotlin.js and kotlin-meta.js from jar into web directory
    configurations.compile.each { File file ->
        copy {
            includeEmptyDirs = false

            from zipTree(file.absolutePath)
            into "${web_dir}/lib"
            include { fileTreeElement ->
                def path = fileTreeElement.path
                path.endsWith(".js") && (path.startsWith("META-INF/resources/") || !path.startsWith("META-INF/"))
            }
        }
    }

Abstraction.kt

package requests

import com.beust.klaxon.Klaxon
import org.w3c.xhr.XMLHttpRequest

object Requestables {
    fun requestWeapons(id: Int, amount: Int)
            = "backend/request_weapons.php?id=$id&amount=$amount"
}

object RawRequestData {
    fun getWeaponsRaw(id: Int, amount: Int, callback: (String) -> Unit, error: (XMLHttpRequest) -> Unit = {}) {
        CommonDataRequest.makeAsyncRequest("GET", Requestables.requestWeapons(id, amount), {
            callback(responseText)
        }, error)
    }
}

object WeaponRawProcessing {
    fun getWeaponDTOs(rawData: String): WeaponRowDTO =  Klaxon().parse(rawData)?: throw NullPointerException("What a Terrible Failure!")
}

object Requests {
    fun getWeapons(id: Int, amount: Int, callback: (WeaponRowDTO) -> Unit, error: (XMLHttpRequest) -> Unit = {}) {
        RawRequestData.getWeaponsRaw(id, amount, {
            callback(WeaponRawProcessing.getWeaponDTOs(it))
        }, error)
    }
}

    // Copy scripts to web directory
    copy {
        into "${web_dir}"
        from ("build/classes/kotlin/main") {
            include "*.js"
        }
    }
}

buildScan {
    termsOfServiceUrl = 'https://gradle.com/terms-of-service'
    termsOfServiceAgree = 'yes'
}

Answer 1

我相信com.beust:klaxon应该和kotlin-jvm一起使用。对于kotlin-js，您应该使用专门为js构建的库，例如kotlin-stdlib-js。

Answer 2

从source code for the Kotlin Gradle plugins看，他们似乎只是在过渡性地应用java插件，而不是java-library插件。这意味着源集的编译类路径将不包含implementation配置（或api配置）。

我认为可以解决此问题，您可以：

apply plugin 'java-library'在您的build.gradle中
将依赖项更改为compile "<coordinates>"，以便将它们添加到compile配置中。

我还没有测试过，所以让我知道它是否有效。

Gradle获取依赖，但未在构建中使用它

完整文件：

build.gradle

Abstraction.kt

2 个答案: