string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=1919%E5%B9%B4%E6%8B%92%E7%AD%BE%E7%9A%84%E6%98%AF%E4%BB%80%E4%B9%88%E6%9D%A1%E7%BA%A6 => Received HTTP code 403 from proxy after CONNECT"
1919年拒签的是什么条约
