string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%8B%E6%9C%BA%E6%B8%85%E7%90%86%E9%9A%90%E8%97%8F%E5%86%85%E5%AD%98 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
手机清理隐藏内存
