string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%A3%E8%B4%AD%E5%B0%B1%E6%98%AF%E4%B8%AD%E9%97%B4%E8%B5%9A%E5%B7%AE%E4%BB%B7%E7%9A%84%E5%90%97 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
代购就是中间赚差价的吗
