android studio 3.0升级 问题 Could not find commons-codec.jar (commons-codec:commons-codec:1.6).

Gradle sync failed: Could not find commons-codec.jar (commons-codec:commons-codec:1.6).
Searched in the following locations:
file:/Applications/Android Studio.app/Contents/gradle/m2repository/commons-codec/commons-codec/1.6/commons-codec-1.6.jar

Consult IDE log for more details (Help | Show Log) (727ms)

解决办法如下：http://mvnrepository.com/artifact/commons-codec/commons-codec/1.6

下载拷贝到 file:/Applications/Android Studio.app/Contents/gradle/m2repository/commons-codec/commons-codec/1.6提示的路径即可