Initialization failed for https://start.spring.io Please check URL, network and proxy settings解决办法

错误信息如下:
  Initialization failed for ‘https://start.spring.io’
  Please check URL, network and proxy settings.
  Error message:
  Error parsing JSON response

  网上众说纷纭，有改打开idea最上角file选项的Settings…proxy settings的。有说将 https://start.spring.io 改为: http://start.spring.io的，还有说防火墙什么的。
  能找到这篇文章就是缘分，用阿里云的代理：https://start.aliyun.com