Connect to maven.google.com:80Connection timed out: connect

当 build.gradle进行上述配置的话，总会出现如下情况：

Could not resolve all artifacts for configuration ':classpath'.    > Could not resolve com.android.tools.build:gradle:3.5.3.      Required by:          project :       > Could not resolve com.android.tools.build:gradle:3.5.3.          > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.3/gradle-3.5.3.pom'.             > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.3/gradle-3.5.3.pom'.                > Connection reset       > Could not resolve com.android.tools.build:gradle:3.5.3.          > Could not get resource 'http://maven.google.com/nexus/content/groups/public/com/android/tools/build/gradle/3.5.3/gradle-3.5.3.pom'.             > Could not GET 'http://maven.google.com/nexus/content/groups/public/com/android/tools/build/gradle/3.5.3/gradle-3.5.3.pom'.                > Connect to maven.google.com:80 [maven.google.com/172.217.24.67, maven.google.com/2404:6800:4005:805:0:0:0:2003] failed: Connection timed out: connect

 

如果将上述图片的google()和 jcenter()各自改为

maven { url 'https://maven.aliyun.com/repository/google' }

和maven { url 'https://maven.aliyun.com/repository/jcenter' }

即可以运行成功，记得多处更改。