string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A6%82%E4%BD%95%E5%AF%B9app%E8%BF%9B%E8%A1%8C%E6%8E%A8%E5%B9%BF => Failed to connect to 101.89.117.144 port 38022: Connection refused"
如何对app进行推广
