string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E6%8A%95%E8%B5%84%E4%BB%80%E4%B9%88%E9%A1%B9%E7%9B%AE%E6%8A%95%E8%B5%84%E5%B0%8F => Received HTTP code 403 from proxy after CONNECT"
现在投资什么项目投资小
