string(268) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=qq%E5%8A%A0%E7%BE%A4%E4%B8%80%E5%A4%A9%E6%9C%89%E6%B2%A1%E6%9C%89%E6%95%B0%E9%87%8F%E4%B8%8A%E9%99%90 => Failed to connect to 101.91.112.32 port 38162: Connection refused"
qq加群一天有没有数量上限
