当我将 Android Studio 升级到 Arctic Fox 2020.3.1 时，mavenCentral() 不起作用

问题描述

我有一个 android 项目，以前运行良好。

今天我将Android Studio升级到Arctic Fox 2020.3.1，然后我在Android Studio Arctic Fox 2020.3.1中运行该项目，但出现以下错误。

我调试了项目，我认为代码 mavenCentral() 导致了错误，因此我将 mavenCentral() 替换为 jcenter()，应用程序可以正常运行。

我知道 jcenter() 已过时，但为什么 mavenCentral() 会导致错误？

错误

**Execution Failed for task ':app:kaptGenerateStubsFreeDebugMiniKotlin'.
> Could not resolve all files for configuration ':app:kapt'.
   > Failed to transform kotlinx-Metadata-jvm-0.2.0.jar (org.jetbrains.kotlinx:kotlinx-Metadata-jvm:0.2.0) to match attributes {artifactType=processed-jar,org.gradle.category=library,org.gradle.libraryelements=jar,org.gradle.status=release,org.gradle.usage=java-runtime}.
      > Could not download kotlinx-Metadata-jvm-0.2.0.jar (org.jetbrains.kotlinx:kotlinx-Metadata-jvm:0.2.0)
         > Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlinx/kotlinx-Metadata-jvm/0.2.0/kotlinx-Metadata-jvm-0.2.0.jar'.
            > Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlinx/kotlinx-Metadata-jvm/0.2.0/kotlinx-Metadata-jvm-0.2.0.jar'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.0.1] Failed: Connection refused: connect
   > Failed to transform annotations-12.0.jar (com.intellij:annotations:12.0) to match attributes {artifactType=processed-jar,org.gradle.usage=java-runtime}.
      > Could not download annotations-12.0.jar (com.intellij:annotations:12.0)
         > Could not get resource 'https://repo.maven.apache.org/maven2/com/intellij/annotations/12.0/annotations-12.0.jar'.
            > Could not GET 'https://repo.maven.apache.org/maven2/com/intellij/annotations/12.0/annotations-12.0.jar'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.0.1] Failed: Connection refused: connect
   > Failed to transform guava-29.0-jre.jar (com.google.guava:guava:29.0-jre) to match attributes {artifactType=processed-jar,org.gradle.usage=java-runtime}.
      > Could not download guava-29.0-jre.jar (com.google.guava:guava:29.0-jre)
         > Could not get resource 'https://repo.maven.apache.org/maven2/com/google/guava/guava/29.0-jre/guava-29.0-jre.jar'.
            > Could not GET 'https://repo.maven.apache.org/maven2/com/google/guava/guava/29.0-jre/guava-29.0-jre.jar'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.0.1] Failed: Connection refused: connect
   > Failed to transform checker-qual-2.11.1.jar (org.checkerframework:checker-qual:2.11.1) to match attributes {artifactType=processed-jar,org.gradle.usage=java-runtime}.
      > Could not download checker-qual-2.11.1.jar (org.checkerframework:checker-qual:2.11.1)
         > Could not get resource 'https://repo.maven.apache.org/maven2/org/checkerframework/checker-qual/2.11.1/checker-qual-2.11.1.jar'.
            > Could not GET 'https://repo.maven.apache.org/maven2/org/checkerframework/checker-qual/2.11.1/checker-qual-2.11.1.jar'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.0.1] Failed: Connection refused: connect
   > Failed to transform error_prone_annotations-2.3.4.jar (com.google.errorprone:error_prone_annotations:2.3.4) to match attributes {artifactType=processed-jar,org.gradle.usage=java-runtime}.
      > Could not download error_prone_annotations-2.3.4.jar (com.google.errorprone:error_prone_annotations:2.3.4)
         > Could not get resource 'https://repo.maven.apache.org/maven2/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar'.
            > Could not GET 'https://repo.maven.apache.org/maven2/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar'.
               > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.0.1] Failed: Connection refused: connect**

*** Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.**

build.gradle

buildscript {
    ext.kotlin_version = "1.5.0"
    repositories {
        google()
        jcenter()
        //mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.5"

    }
}


allprojects {
    repositories {
        google()
        jcenter()
        //mavenCentral()
    }
}


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

解决方法

您是否检查过您的主机文件中是否有对 repo.maven.apache.org 的引用？

原因：

[repo.maven.apache.org/127.0.0.1] failed: Connection refused: connect