string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%91%E7%90%86%E5%8D%95%E4%BD%8D%E5%90%88%E5%90%8C%E7%AE%A1%E7%90%86 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
监理单位合同管理
