string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%96%B0%E5%8D%8E%E4%B9%A6%E5%BA%97%E6%9C%89%E5%8D%96%E4%BA%8C%E5%BB%BA%E7%9A%84%E4%B9%A6%E5%90%97 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
新华书店有卖二建的书吗
