string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E6%B8%85%E9%99%A4%E5%BE%AE%E4%BF%A1%E9%87%8C%E7%9A%84%E5%86%85%E5%AD%98%E6%B8%85%E7%90%86 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
怎么清除微信里的内存清理
