string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8B%85%E5%BD%93%E4%BD%9C%E4%B8%BA%E6%96%B9%E9%9D%A2%E5%AD%98%E5%9C%A8%E7%9A%84%E9%97%AE%E9%A2%98%E5%88%86%E6%9E%90 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
担当作为方面存在的问题分析
