string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B0%E6%B1%89%E7%9A%84%E6%88%90%E5%90%8D%E4%BD%9C%E5%93%81%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
田汉的成名作品是什么
