添加阿里的仓库

build.gradle

@@ -21,6 +21,7 @@ buildscript {
         authVersion='1.2.1'
     }
     repositories {
+        maven { url 'https://maven.aliyun.com/repository/public' }
         mavenCentral()
         maven { url = 'http://repo.spring.io/plugins-release' }
     }