string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E6%A0%BC%E5%BC%8Fu%E7%9B%98%E9%87%8C%E7%9A%84%E4%B8%9C%E8%A5%BF => Failed to connect to 101.89.143.195 port 38109: Connection refused"
如何格式u盘里的东西
