st = conn.createStatement(); // 4.Ö´ÐÐÓï¾ä // rs = st.executeQuery("select count(*) from user where account='"+account+"' and password = '"+password+"'"); // rs = st.executeQuery("select * from user where account='"+acc+"' and password ='"+pass+"'"); rs = st.executeQuery("select count(*) from user where account='"+acc+"' and password ='"+pass+"'"); while(rs.next()){ num=rs.getInt(1); if(num==0){ return false; } return true; } return false; } finally { JdbcUtils.free(rs, st, conn); } }