Android studio 找不到com.android.tools.build:gradle:3.1.3

我正在使用Android Studio 3.0.1，我已经将Gradle插件从4.1升级到4.4，并尝试将Android插件Gradle从3.0.1升级到3.1.3。问题是无法更新android插件，并给我这个错误

Error:Could not find com.android.tools.build:gradle:3.1.3.
Searched in the following locations:
file:/F:/android studio/gradle/m2repository/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.pom
file:/F:/android studio/gradle/m2repository/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.jar
https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.pom
https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.jar
https://maven.google.com/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.pom
https://maven.google.com/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.jar
https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.pom
https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.3/gradle-3.1.3.jar    

基于同样的问题，我在项目级build.gradle中添加了maven repo，以及用于AS 3.0及更高版本的google（），但问题尚未解决

buildscript {

    repositories {
        google()
        maven {
            url "https://maven.google.com"
        }
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.3'

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

allprojects {

    repositories {
        google()
        maven {
            url "https://maven.google.com"
        }
        jcenter()

    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

---

确保选中了“启用嵌入式Maven repository”（在“首选项/设置”菜单中）

尝试更改并验证“gradle wrapper.properties”文件中的设置，以将gradle dist修改为更高版本

分配=https://services.gradle.org/distributions/gradle-4.4-all.zip

并将android支持库版本更新为最新版本，如27.1.1