string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BE%B7%E9%82%A6%E4%B8%BA%E5%95%A5%E5%8F%AB%E5%BE%B7%E9%82%A6%E5%91%A2 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
德邦为啥叫德邦呢
