引用：https://www.cnblogs.com/caoxinyu/p/10568462.html

build.gradle 可能有多个，一般在app 节点，默认里面不包含buildscript，allprojects 这两项。

把这段代码加入 build.gradle （Moudle:app） 尾部：

buildscript {
    
    repositories {
        maven{ url = "http://maven.aliyun.com/nexus/content/groups/public/" }
        google()
        jcenter()
    }
    dependencies {
        classpath ‘com.android.tools.build:gradle:3.1.2‘
        

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        maven{ url = "http://maven.aliyun.com/nexus/content/groups/public/" }
        google()
        jcenter()
    }
}

Android Studio 编译报错：download fastutil-7.2.0.jar