string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=idc%E5%85%AC%E5%B8%83%E7%9A%84%E6%95%B0%E6%8D%AE%E5%9C%A8%E5%93%AA%E6%9F%A5%E7%9C%8B => Failed to connect to 14.18.117.71 port 38220: Connection refused"
idc公布的数据在哪查看
