string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E9%80%A0%E8%AE%A1%E9%87%8F%E8%B0%81%E8%AE%B2%E5%BE%97%E5%A5%BD%E5%95%8A => Failed to connect to 14.18.117.71 port 38220: Connection refused"
一造计量谁讲得好啊
