============问题描述============
ResultSet res = sqlConn .executeQuery("select count(*) from" + username + "_message"); while (res.next()) { UserUtils.flag = res.getInt(1); System.out.println("userUtils = " + UserUtils.flag); }
============解决方案1============
============解决方案2============
原文:http://www.cnblogs.com/lianxu61/p/4035819.html