string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%99%90%E5%88%B6%E8%87%AA%E7%94%B1%E5%A4%9A%E9%95%BF%E6%97%B6%E9%97%B4%E7%AE%97%E8%BF%9D%E6%B3%95 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
限制自由多长时间算违法
