string(233) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=wap%E6%98%AF%E7%A7%BB%E5%8A%A8%E7%AB%AF%E8%BF%98%E6%98%AF%E6%89%8B%E6%9C%BA%E7%AB%AF => Received HTTP code 403 from proxy after CONNECT"
wap是移动端还是手机端
