string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E8%BF%87%E5%85%AD%E9%97%A8%E4%B9%8B%E5%90%8E%E5%91%A2 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
注会过六门之后呢
