string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qq%E6%B7%BB%E5%8A%A0%E4%BA%86%E5%A5%BD%E5%8F%8B%E5%8F%AF%E4%BB%A5%E6%92%A4%E5%9B%9E%E6%9D%A5%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
qq添加了好友可以撤回来吗
