string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%88%86%E9%92%9F%E4%BA%86%E8%A7%A3%E8%8B%8F%E7%82%B3%E6%B7%BB => Failed to connect to 14.18.117.71 port 38164: Connection refused"
一分钟了解苏炳添
