string(237) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8C%89%E9%A1%BA%E5%BA%8F%E7%BB%99%E6%96%87%E4%BB%B6%E5%91%BD%E5%90%8D => Failed to connect to 14.18.46.51 port 38044: Connection refused"
按顺序给文件命名
