string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A2%84%E9%98%B2%E6%89%8B%E6%9C%BA%E7%97%85%E6%AF%92%E7%9A%84%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
预防手机病毒的方法
