string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AA%E4%BA%BA%E8%AE%A2%E9%98%85%E5%8F%B7%E6%98%AF%E5%85%AC%E4%BC%97%E5%8F%B7%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
个人订阅号是公众号吗
