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%E5%85%88%E5%AD%A6%E6%A1%88%E4%BE%8B%E5%8F%AF%E4%BB%A5%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
一造先学案例可以吗
