kotlin 代码的 gradle 构建

Question

我正在尝试建立一个使用 Gradle 构建 Kotlin 代码的项目。我已按照说明 here 进行操作关于如何设置 build.gradle 文件但收到错误

buildscript {
    repositories {
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.0'
    }
}

apply plugin: 'kotlin'

这样我得到了错误:

FAILURE: Build failed with an exception.

• What went wrong: A problem occurred configuring root project 'kjsonparser'. Could not resolve all files for configuration ':classpath'. Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.0. Required by: project : Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.0. Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.0/kotlin-gradle-plugin-1.2.0.pom'. Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.0/kotlin-gradle-plugin-1.2.0.pom'. java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty

我还尝试了指定插件的“较新”方式

plugins {
    id "org.jetbrains.kotlin.jvm" version "1.2.0"
}

这给出了这个错误:

• What went wrong: Plugin [id: 'org.jetbrains.kotlin.jvm', version: '1.2.0'] was not found in any >of the following sources:

Gradle Core Plugins (plugin is not in 'org.gradle' namespace) - Plugin Repositories (could not resolve plugin artifact >'org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin:1.2.0') Searched in the following repositories: Gradle Central Plugin Repository

Gradle 版本

gradle -version

------------------------------------------------------------
Gradle 4.4

Kotlin(和 openjdk) kotlin 版本 Kotlin 版本 1.2.0(JRE 1.8.0_151-8u151-b12-0ubuntu0.17.10.2-b12)

在 Ubuntu 17.10 上运行

我以前从未使用过 Gradle，所以不确定我是否在构建文件中遗漏了任何内容

Answer 1

试试这个。它有效:

buildscript {
    ext.kotlin_version = '1.2.10'

    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

apply plugin: 'kotlin'

repositories {
    mavenCentral()
}

dependencies {
    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
}