string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E9%80%A0%E5%87%BA%E6%96%B0%E6%95%99%E6%9D%90%E4%BA%86%E5%90%97 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
一造出新教材了吗
