string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%AC%94%E8%AE%B0%E6%9C%AC%E9%94%AE%E7%9B%98%E6%8C%89%E9%94%AE%E4%B8%8D%E5%A5%BD%E4%BD%BF%E4%BA%86 => Received HTTP code 403 from proxy after CONNECT"
笔记本键盘按键不好使了
