string(288) "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%E4%B8%8D%E8%82%AF%E5%AE%9A%2C%E5%86%99%E4%BA%86%E4%B8%A4%E4%B8%AA => Failed to connect to 125.88.227.171 port 38114: Connection refused"
一建案例答案不肯定,写了两个
