Android Studio 3.1.3 Gradle Sync错误。无法下载Gradle-Core.jar [英] Android Studio 3.1.3 Gradle Sync Error. Could Not Download Gradle-Core.jar
问题描述
我是一名计算机科学专业的学生，我正在尝试熟悉为夏季业余爱好构建应用程序。但是，在过去的几天里，当我尝试同步Gradle时，它给出了同样的错误，说明
I am a computer science student and I am attempting to get familiar with building applications for a summertime hobby. However, for the past few days when I try to sync Gradle it gives me the same error stating that
gradle-core.jar不能可以下载。
gradle-core.jar could not be downloaded.
我将在这篇文章的底部发布完整的错误消息。
I will post the full error message at the bottom of this post.
当然，我确保我不在离线模式下工作。最重要的是，我强制 https：// 使用 http：// 获取源。我还在 gradle-wrapper.properties 中将distributionUrl的 https：// 更改为http：//文件。我尝试了不同的代理并更改了 build.gradle 文件中的存储库，以获得 jcenter（），mavenCentral（）和google（）。
Of course, I made sure that I am NOT working in offline mode. On top of that I am forcing https:// sources to be fetched using http://. I have also changed the https:// for the distributionUrl to http:// in the gradle-wrapper.properties file. I have tried different proxies and have changed the repositories in the build.gradle file to have jcenter(), mavenCentral(), and google().
我甚至试图与我的防火墙同步并关闭防病毒软件，但没有任何工作。您将在下面找到我的整个错误消息。
I have even attempted to sync with my firewall and antivirus turned off and nothing is working. Below you will find my entire error message.
org.gradle.api.ProjectConfigurationException: A problem occurred configuring root project 'AndroidStudioProjects'.
...
at org.gradle.configuration.project.LifecycleProjectEvaluator.doConfigure(LifecycleProjectEvaluator.java:64)
... 84 more
Caused by: org.gradle.internal.resolve.ArtifactResolveException: Could not download gradle-core.jar (com.android.tools.build:gradle-core:3.1.3)
at org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver$RemoteRepositoryAccess.resolveArtifact(ExternalResourceResolver.java:506)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$ResolveAndCacheRepositoryAccess.resolveArtifact(CachingModuleComponentRepository.java:409)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.BaseModuleComponentRepositoryAccess.resolveArtifact(BaseModuleComponentRepositoryAccess.java:65)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.memcache.InMemoryCachedModuleComponentRepository$CachedAccess.resolveArtifact(InMemoryCachedModuleComponentRepository.java:124)
at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveArtifact(ErrorHandlingModuleComponentRepository.java:171)
...
... 6 more
Caused by: org.gradle.api.resources.ResourceException: Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle-core/3.1.3/gradle-core-3.1.3.jar'.
at org.gradle.internal.resource.ResourceExceptions.failure(ResourceExceptions.java:74)
at org.gradle.internal.resource.ResourceExceptions.getFailed(ResourceExceptions.java:57)
at org.gradle.internal.resource.transfer.AccessorBackedExternalResource.withContentIfPresent(AccessorBackedExternalResource.java:146)
...
at org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver$RemoteRepositoryAccess.resolveArtifact(ExternalResourceResolver.java:499)
... 27 more
Caused by: javax.net.ssl.SSLException: SSL peer shut down incorrectly
at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:596)
at sun.security.ssl.InputRecord.read(InputRecord.java:532)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:983)
at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:940)
at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:139)
at org.apache.http.impl.io.SessionInputBufferImpl.read(SessionInputBufferImpl.java:200)
...
at org.gradle.internal.resource.transfer.AccessorBackedExternalResource.withContentIfPresent(AccessorBackedExternalResource.java:137)
... 44 more
（编辑）：以下是我的相关文件
(EDIT): Below are my relevant files
build.gradle ：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext.kotlin_version = '1.2.30'
repositories {
jcenter()
mavenCentral()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.1.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
mavenCentral()
google()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
gradle-wrapper.properties ：
#Tue Jun 26 21:50:19 MDT 2018
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=http\://services.gradle.org/distributions/gradle-4.4-all.zip
gradle.properties ：
# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx1536m
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
settings.gradle ：
include ':app'
local.properties ：
## This file is automatically generated by Android Studio.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file should *NOT* be checked into Version Control Systems,
# as it contains information specific to your local configuration.
#
# Location of the SDK. This is only used by Gradle.
# For customization when using a Version Control System, please read the
# header note.
sdk.dir=C\:\\Users\\jddah\\AppData\\Local\\Android\\Sdk
推荐答案
尝试将 google（）作为第一个回购，如下所示。不要将它放在 jcenter（）和 mavenCentral（）下，用于现有的Android Studio项目。
Try to put google() as the first repo as below. Don't put it under jcenter() and mavenCentral() for your existing Android Studio projects.
repositories {
google() // make this repo as the first one if Android Gradle Plugin is upgraded from 2.x to 3.x.
jcenter()
mavenCentral()
}
对于那些使用Android Gradle Plugin较低版本的 React Native 或 CordovaLib 项目，例如2.2.3，您可以尝试用下面的替换 google（），但请记住将其作为第一个回购选择。
For those React Native or CordovaLib projects that are with Android Gradle Plugin lower versions, e.g. 2.2.3, you can try to replace the google() with below, but remember to put it as the first repo selection.
repositories {
// google()
maven {
url "https://maven.google.com"
}
jcenter()
}
清理所有旧的 .gradle 缓存，然后执行新的同步。
Clean up all your old .gradle caches and then perform a new Sync.
这篇关于Android Studio 3.1.3 Gradle Sync错误。无法下载Gradle-Core.jar的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
