string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%98%BE%E7%A4%BA%E5%B1%8F%E5%B9%95%E4%B8%80%E9%97%AA%E4%B8%80%E9%97%AA%E7%9A%84%E6%80%8E%E4%B9%88%E5%9B%9E%E4%BA%8B => Failed to connect to 14.18.117.71 port 38041: Connection refused"
显示屏幕一闪一闪的怎么回事
