當遇到 錯誤提示點擊Show Detail顯示Could not resolve com.android.support:appcompat-v7:26.1.0和下方錯誤的解決辦法；試過修改Maven倉庫和網上無數的方法都不行，找到的這個辦法.
ex:
Connect to dl.google.com:443 [dl.google.com/203.208.43.98, dl.google.com/203.208.43.96, dl.google.com/203.208.43.103, dl.google.com/203.208.43.100, dl.google.com/203.208.43.105, dl.google.com/203.208.43.110, dl.google.com/203.208.43.99, dl.google.com/203.208.43.97, dl.google.com/203.208.43.104, dl.google.com/203.208.43.101, dl.google.com/203.208.43.102] failed: Connection refused: connect
> Connection refused: connect
