java - 安卓获取一个网站数据出现问题，但是其他网站可以正常获取，这是为什么

Answer 1

To call Handler in a thread, you need to call Looper first. For details, see Toast and Looper. Handler message loop mechanism.

Answer 2

Add Looper.prepare()

Answer 3

Handler is not the handler in the main thread, so you need to create the looper object yourself!