string(347) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%A0%BC%E5%BC%8F%E5%8C%96%E7%9A%84%E6%97%B6%E5%80%99%E6%98%BE%E7%A4%BA%E9%A9%B1%E5%8A%A8%E5%99%A8%E6%AD%A3%E5%9C%A8%E4%BD%BF%E7%94%A8%E8%BF%98%E8%83%BD%E4%B8%8D%E8%83%BD%E6%A0%BC%E5%BC%8F%E5%8C%96 => Received HTTP code 403 from proxy after CONNECT"
格式化的时候显示驱动器正在使用还能不能格式化
