string(239) "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%E5%86%85%E5%AD%98%E5%BE%88%E6%85%A2 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
微信清理内存很慢
