string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%9B%AE%E5%89%8D%E9%82%A3%E4%B8%AA%E8%A1%8C%E4%B8%9A%E5%8F%91%E5%B1%95%E5%89%8D%E6%99%AF%E5%A5%BD => Received HTTP code 403 from proxy after CONNECT"
目前那个行业发展前景好
