string(321) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E8%93%9D%E5%AE%9D%E4%B9%A6%E5%92%8C%E5%AD%A6%E9%9C%B8%E7%AC%94%E8%AE%B0%E8%80%83%E7%82%B9%E6%89%8B%E5%86%8C%E5%93%AA%E4%B8%AA%E5%A5%BD => Failed to connect to 101.89.117.144 port 38017: Connection refused"
二建蓝宝书和学霸笔记考点手册哪个好
