string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E4%B8%8A%E7%9A%84%E5%B0%BE%E8%B4%A7%E6%98%AF%E7%9C%9F%E7%9A%84%E5%90%97%E5%8F%AF%E4%BF%A1%E5%90%97 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
网上的尾货是真的吗可信吗
