string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E8%A7%86%E9%A2%91%E8%AE%B2%E4%B9%89%E6%9C%89%E5%BF%85%E8%A6%81%E6%89%93%E5%8D%B0%E5%87%BA%E6%9D%A5%E5%90%97 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
一建视频讲义有必要打印出来吗
