string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E6%A1%88%E4%BE%8B%E7%AD%94%E6%A1%88%E5%86%99%E9%94%99%E4%BD%8D%E7%BD%AE%E5%A6%82%E4%BD%95%E6%94%B9%E6%AD%A3 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
一建案例答案写错位置如何改正
