string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%96%E6%B2%B9%E7%BF%81%E7%9A%84%E5%85%A8%E9%83%A8%E6%84%8F%E6%80%9D => Failed to connect to 14.18.117.71 port 38164: Connection refused"
卖油翁的全部意思
