Android中的阿里云仓库

AndroidStudio中经常遇到下载不成功的问题，添加阿里云仓库多半能解决问题。

 		 maven { url "http://maven.aliyun.com/nexus/content/groups/public/"}
        maven { url 'https://maven.aliyun.com/repository/jcenter' }
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }

仓库名称	阿里云仓库地址	阿里云仓库地址（老版）	源地址
central	https://maven.aliyun.com/repository/central	https://maven.aliyun.com/nexus/content/repositories/central	https://repo1.maven.org/maven2/
jcenter	https://maven.aliyun.com/repository/public	https://maven.aliyun.com/nexus/content/repositories/jcenter	http://jcenter.bintray.com/
public	https://maven.aliyun.com/repository/public	https://maven.aliyun.com/nexus/content/groups/public	central仓和jcenter仓的聚合仓
google	https://maven.aliyun.com/repository/google	https://maven.aliyun.com/nexus/content/repositories/google	https://maven.google.com/
gradle-plugin	https://maven.aliyun.com/repository/gradle-plugin	https://maven.aliyun.com/nexus/content/repositories/gradle-plugin	https://plugins.gradle.org/m2/
spring	https://maven.aliyun.com/repository/spring	https://maven.aliyun.com/nexus/content/repositories/spring	http://repo.spring.io/libs-milestone/
spring-plugin	https://maven.aliyun.com/repository/spring-plugin	https://maven.aliyun.com/nexus/content/repositories/spring-plugin	http://repo.spring.io/plugins-release/
grails-core	https://maven.aliyun.com/repository/grails-core	https://maven.aliyun.com/nexus/content/repositories/grails-core	https://repo.grails.org/grails/core
apache snapshots	https://maven.aliyun.com/repository/apache-snapshots	https://maven.aliyun.com/nexus/content/repositories/apache-snapshots	https://repository.apache.org/snapshots/

新版本的as报错：
Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository ‘maven(XXX)’ to redirect to a secure protocol (like HTTPS) or allow insecure protocols.
Caused by: org.gradle.api.InvalidUserCodeException: Using insecure protocols with repositories, without explicit opt-in, is unsupported. Switch Maven repository

建议 allowInsecureProtocol = true

  maven {
            allowInsecureProtocol = true
            url 'https://maven.aliyun.com/nexus/content/groups/public/'
        }
        maven {
            allowInsecureProtocol = true
            url 'https://maven.aliyun.com/nexus/content/repositories/jcenter'
        }