https://stackoverflow.com/questions/33289968/method-not-allowed-the-method-is-not-allowed-for-the-requested-url-on-delete-me
解决方式：使用ajax发送DELETE请求
https://stackoverflow.com/questions/33289968/method-not-allowed-the-method-is-not-allowed-for-the-requested-url-on-delete-me
解决方式：使用ajax发送DELETE请求