string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8F%90%E9%AB%98%E6%89%8B%E6%B7%98%E6%90%9C%E7%B4%A2%E7%9A%84%E9%87%8F => Failed to connect to 101.89.143.195 port 38205: Connection refused"
提高手淘搜索的量
