string(306) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BE%AE%E4%BF%A1%E4%B8%AD%E7%9A%84%E6%B8%85%E7%90%86%E7%BC%93%E5%AD%98%2C%E6%B8%85%E7%90%86%E4%BA%86%E4%BB%80%E4%B9%88%E5%86%85%E5%AE%B9 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
微信中的清理缓存,清理了什么内容
