string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%80%83%E8%AF%95%E7%9A%84%E6%97%B6%E5%80%99%E5%BF%83%E6%80%81%E5%87%BA%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
考试的时候心态出问题
