string(312) "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%E6%B8%85%E7%90%86%E4%BA%86%E5%86%85%E5%AD%98%E4%BD%86%E6%98%AF%E5%AE%9E%E9%99%85%E5%86%85%E5%AD%98%E4%B8%8D%E6%9B%B4%E6%96%B0 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
微信清理了内存但是实际内存不更新
