Android 工作室3.2.1 ArtifactResolveException: 无法解析配置’: classspath’的所有构件

在我更新 Android Studio 到3.2.1和我的项目的分级版本之后，我得到了下面的构建错误。

我已经检查了很多相关的问题这个问题，但没有运气。

项目依赖性 Build.gradle

buildscript {


repositories {
google()
mavenCentral()
maven { url 'https://maven.google.com' }
gradlePluginPortal()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'


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


allprojects {
repositories {
google()
maven { url "https://jitpack.io" }
jcenter ()


}
}


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

错误

org.gradle.api.ProjectConfigurationException: A problem occurred configuring root project 'DemoAppppp'.
at org.gradle.configuration.project.LifecycleProjectEvaluator.addConfigurationFailure(LifecycleProjectEvaluator.java:94)


Caused by: org.gradle.api.internal.artifacts.ivyservice.DefaultLenientConfiguration$ArtifactResolveException: Could not resolve all artifacts for configuration ':classpath'.
at org.gradle.api.internal.artifacts.configurations.DefaultConfiguration.rethrowFailure(DefaultConfiguration.java:944)


Caused by: org.gradle.internal.resolve.ModuleVersionResolveException: Could not resolve com.android.tools.build:gradle:3.2.1.
Required by:
project :
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolveModule(RepositoryChainComponentMetaDataResolver.java:103)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolve(RepositoryChainComponentMetaDataResolver.java:63)


Caused by: org.gradle.internal.resolve.ModuleVersionResolveException: Could not resolve com.android.tools.build:gradle:3.2.1.
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveComponentMetaData(ErrorHandlingModuleComponentRepository.java:139)


Caused by: org.gradle.api.resources.ResourceException: Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
at org.gradle.internal.resource.ResourceExceptions.failure(ResourceExceptions.java:74)
at org.gradle.internal.resource.ResourceExceptions.getFailed(ResourceExceptions.java:57)


Caused by: org.gradle.internal.resource.transport.http.HttpRequestException: Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
at org.gradle.internal.resource.transport.http.HttpClientHelper.performRequest(HttpClientHelper.java:96)


Caused by: org.apache.http.conn.HttpHostConnectException: Connect to localhost:80 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect
Caused by: java.net.ConnectException: Connection refused: connect

更新

我只是按照@CoolMind 的回答解决了分级问题，但是还有另外一个问题，那就是 这个

我按照这个问题给出的答案去做，但是没有解决我的问题