string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E7%94%A8%E6%B8%85%E9%99%A4%E7%BC%93%E5%AD%98%E5%90%97%E5%AE%89%E5%85%A8%E5%90%97 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
抖音用清除缓存吗安全吗
