string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%82%B9%E8%B5%9E%E6%98%AF%E5%BF%85%E9%A1%BB%E7%9A%84%E5%90%97%E4%B8%BA%E4%BB%80%E4%B9%88 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
点赞是必须的吗为什么
