string(232) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=raw%E6%A0%BC%E5%BC%8F%E7%94%A8%E4%BB%80%E4%B9%88%E7%9C%8B%E5%9B%BE => Failed to connect to 14.116.215.7 port 38225: Connection refused"
raw格式用什么看图
