string(230) "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%E5%B8%82%E6%94%BF%E7%9F%A5%E8%AF%86%E7%82%B9 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
一建市政知识点
