string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%BB%E7%BB%93%E5%87%BA%E5%BE%AE%E5%8D%9A%E7%9A%84%E6%8E%A8%E5%B9%BF%E6%96%B9%E6%B3%95 => Received HTTP code 403 from proxy after CONNECT"
总结出微博的推广方法
