string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B7%98%E5%AE%9D%E4%BB%A3%E5%8F%91%E8%B7%9F%E5%88%86%E9%94%80%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 14.18.117.71 port 38220: Connection refused"
淘宝代发跟分销的区别
