string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%90%91%E5%85%AC%E4%BC%97%E5%8F%B7%E6%8A%95%E7%A8%BF%E7%9A%84%E5%BD%A2%E5%BC%8F%E6%98%AF%E6%80%8E%E6%A0%B7%E7%9A%84 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
向公众号投稿的形式是怎样的
