string(261) "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%E5%92%8C%E9%99%88%E5%B0%A7%E5%92%A8%E7%9A%84%E7%9C%8B%E6%B3%95100 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
卖油翁和陈尧咨的看法100
