string(226) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ad%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AF%BC%E5%87%BA%E4%B8%BAword => Failed to connect to 14.116.215.7 port 38225: Connection refused"
ad原理图导出为word
