string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%86%8C%E4%B8%AA%E4%BD%93%E6%88%B7%E5%92%8C%E5%85%AC%E5%8F%B8%E7%9A%84%E5%88%A9%E5%BC%8A => Failed to connect to 125.88.227.171 port 38114: Connection refused"
注册个体户和公司的利弊
