string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E5%8E%82%E7%AB%9E%E4%BB%B7%E7%9A%84%E6%B5%81%E7%A8%8B => Failed to connect to 101.89.159.206 port 38075: Connection refused"
电厂竞价的流程
