string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E7%94%BB%E4%B8%80%E4%B8%AA45%E5%BA%A6%E7%9A%84%E8%A7%92 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
如何画一个45度的角
