string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=raw%E6%A0%BC%E5%BC%8F%E8%83%BD%E7%9B%B4%E6%8E%A5%E6%9F%A5%E7%9C%8B%E5%90%97 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
raw格式能直接查看吗
