string(288) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%86%99%E4%B8%80%E7%AF%87%E4%B8%80%E4%BB%B6%E9%9A%BE%E5%BF%98%E7%9A%84%E4%BA%8B400%E4%B8%AA%E5%AD%97%E5%B7%A6%E5%8F%B3 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
写一篇一件难忘的事400个字左右
