gradle更换仓库 解决下载速度慢问题

buildscript { 
repositories { 
maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' } 
maven { url 'https://plugins.gradle.org/m2/' }
}
}
allprojects {
repositories {
mavenLocal()
maven { name "Alibaba" ; url "https://maven.aliyun.com/repository/public"; }
maven { name "Bstek" ; url "http://nexus.bsdn.org/content/groups/public/"; }
}
}