string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E6%9C%89%E6%95%88%E6%94%B6%E9%9B%86%E6%95%B0%E6%8D%AE => Failed to connect to 101.89.159.206 port 38087: Connection refused"
如何有效收集数据
