string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A5%E4%BD%9C%E4%B8%AD%E5%AD%98%E5%9C%A8%E9%97%AE%E9%A2%98%E6%80%BB%E7%BB%93 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
工作中存在问题总结
