string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%9C%80%E7%AE%80%E5%8D%95%E7%9A%84%E6%94%B6%E9%9B%86%E6%95%B0%E6%8D%AE%E7%9A%84%E6%96%B9%E6%B3%95 => Received HTTP code 403 from proxy after CONNECT"
最简单的收集数据的方法
