string(237) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8C%81%E7%BB%AD%E6%94%B6%E5%88%B0%E5%9E%83%E5%9C%BE%E7%9F%AD%E4%BF%A1 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
持续收到垃圾短信
