string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E6%8A%95%E8%B5%84%E5%81%9A%E7%82%B9%E5%95%A5%E5%A5%BD => Failed to connect to 14.116.215.7 port 38225: Connection refused"
现在投资做点啥好
