string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9D%A2%E8%AF%95%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98%E7%9A%84%E5%9B%9E%E7%AD%94%E6%8A%80%E5%B7%A7%E5%92%8C%E6%96%B9%E6%B3%95 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
面试常见问题的回答技巧和方法
