源码获取：博客首页 "资源" 里下载！

一、项目运行

环境配置：

Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）

项目技术：

Jdbc+ Servlert + html+ css + JavaScript + JQuery + Ajax +等等

管理员登陆控制层：

public class adminAction implements ModelDriven{admin admin = null;public String login() {DBManager dbManager = new DBManager();String sql= "select * from admin where username = '"+admin.getUsername()+"' and password = '"+admin.getPassword()+"'";ResultSet resultSet = dbManager.executeQuery(sql);try {if (resultSet.next()) {System.out.println("登陆成功");ActionContext.getContext().getSession().put("admin", admin);return "success";}else {ActionContext.getContext().getSession().put("message", "登录失败");return "failed";}} catch (Exception e) {e.printStackTrace();ActionContext.getContext().getSession().put("message", "登录失败");// TODO: handle exception}finally{dbManager.closeConnection();}return "failed";}@Overridepublic Object getModel() {// TODO Auto-generated method stubif (admin == null) {admin = new admin();}return admin;}
}

抽奖控制层一二三等奖设置：

public class choujiangAction implements ModelDriven {private luck_dog luck_dog = null;@Overridepublic Object getModel() {// TODO Auto-generated method stubif (luck_dog == null) {luck_dog = new luck_dog();}return luck_dog;}public void choujiang() {System.out.println(luck_dog.getLuck_num());DBManager dbManager = new DBManager();String sql = "select * from lucky_dog where luck_num = "+ luck_dog.getLuck_num();ResultSet resultSet = dbManager.executeQuery(sql);try {if (resultSet.next()) {System.out.println("这个号码已经中过奖！！！");String s = "{\"name\":\"提示\",\"age\":\"alreadyexisterror\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);return;} else {int total = 0;int luck_group = 0;sql = "select count(*)as totalCount from lucky_dog";resultSet = dbManager.executeQuery(sql);if (resultSet.next()) {total = resultSet.getInt("totalCount");}// 得到抽奖表中的记录数if (total < 8) {luck_group = 3;// 三等奖8个} else if (total < 13) {luck_group = 2;// 二等奖5个} else if (total < 16) {luck_group = 1;// 一等奖3个} else {System.out.println("抽奖总数已满！！！");String s = "{\"name\":\"提示\",\"age\":\"totaloverflowerror\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);return;}sql = "insert into lucky_dog (luck_num,luck_group)values("+ luck_dog.getLuck_num() + "," + luck_group + ")";boolean result = dbManager.insertSQL(sql);if (result) {String s = "{\"name\":\"提示\",\"age\":\"success\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);System.out.println("抽奖数据已经写入数据库");} else {System.out.println("抽奖数据写入失败");}}} catch (Exception e) {// TODO: handle exception} finally {dbManager.closeConnection();}}public void view_result() {System.out.println("view_resultview_resultview_result");DBManager dbManager = new DBManager();String sql = "select * from lucky_dog";luck_dog luck_dog = null;ResultSet resultSet = dbManager.executeQuery(sql);List<luck_dog> luck_dogList = new ArrayList<luck_dog>();try {while (resultSet.next()) {luck_dog = new luck_dog();luck_dog.setId(resultSet.getInt("id"));luck_dog.setLuck_group(resultSet.getInt("luck_group"));luck_dog.setLuck_num(resultSet.getInt("luck_num"));luck_dogList.add(luck_dog);}JSONArray jsonArray = JSONArray.fromObject(luck_dogList);System.out.println(jsonArray);// String s = "{\"name\":\"提示\",\"age\":\"已提交抢答申请，请静候抢答结果！！！\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(jsonArray);} catch (Exception e) {// TODO: handle exceptione.printStackTrace();} finally {dbManager.closeConnection();}}}

抢答控制层:

public class qiangdaAction {public void start_qinagda() {DBManager dbManager = new DBManager();// 设置之前所有的抢答结束String sql = "update qiangda_group set is_end = 1 where 1=1";System.out.println(dbManager.executeUpdate(sql));sql = "insert into qiangda_group (create_time,started,is_end)values('"+ DateUtil.GetTime() + "',1,0)";//System.out.println(sql);dbManager.insertSQL(sql);// System.out.println(dbManager.insertSQL(sql));// long a = Calendar.getInstance().getTimeInMillis();// System.err.println(a);try {String s = "{\"name\":\"提示\",\"age\":\"新一轮抢答开始！！！\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);} catch (Exception e) {e.printStackTrace();} finally {dbManager.closeConnection();}}public void qiangda() {DBManager dbManager = new DBManager();String sqlString = "select * from qiangda_group where is_end =0";System.err.println(sqlString);String ip = ServletActionContext.getRequest().getParameter("ip");System.out.println(ip);ResultSet resultSet = dbManager.executeQuery(sqlString);qiangda_group qiangda_group = null;try {if (resultSet.next()) {qiangda_group = new qiangda_group();qiangda_group.setCreate_time(resultSet.getDate("create_time"));qiangda_group.setGroup_id(resultSet.getInt("group_id"));qiangda_group.setIs_end(resultSet.getInt("is_end"));qiangda_group.setStarted(resultSet.getInt("started"));System.out.println(qiangda_group);// 插入新纪录之前要查询是否已经抢答过了String sql = "select * from qiangda where ip = '" + ip+ "' and group_id =" + qiangda_group.getGroup_id();resultSet = dbManager.executeQuery(sql);if (resultSet.next()) {System.out.println("本轮已经抢答过了！！！");String s = "{\"name\":\"提示\",\"age\":\"本轮已经抢答过了！！！\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);} else {sql = "insert into qiangda (group_id,ip,qiangda_time)values ("+ qiangda_group.getGroup_id()+ ",'"+ ip+ "','"+ String.valueOf(Calendar.getInstance().getTimeInMillis()) + "')";System.err.println(sql);dbManager.insertSQL(sql);System.out.println("抢答成功！！！");String s = "{\"name\":\"提示\",\"age\":\"已提交抢答申请，请静候抢答结果！！！\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(s);}}} catch (Exception e) {// TODO: handle exception} finally {dbManager.closeConnection();}}public void view_latest_result() {DBManager dbManager = new DBManager();String sqlString = "select max(group_id) as max_id from qiangda_group ";try {System.out.println(sqlString);ResultSet resultSet = dbManager.executeQuery(sqlString);if (resultSet.next()) {int max_id = resultSet.getInt("max_id");sqlString = "select * from qiangda where group_id = "+max_id+" order by qiangda_time";System.out.println(sqlString);resultSet = dbManager.executeQuery(sqlString);List<qiangda> qiangdaList = new ArrayList<qiangda>();qiangda qiangda = null;while (resultSet.next()) {qiangda = new qiangda();qiangda.setGroup_id(resultSet.getInt("group_id"));qiangda.setIp(resultSet.getString("ip"));qiangda.setQiangda_id(resultSet.getInt("qiangda_id"));qiangda.setQiangda_time( Long.parseLong(resultSet.getString("qiangda_time")));qiangdaList.add(qiangda);}JSONArray jsonArray = JSONArray.fromObject(qiangdaList);  ActionContext.getContext().getSession().put("qiangdaList", qiangdaList);System.out.println(jsonArray);//String s = "{\"name\":\"提示\",\"age\":\"已提交抢答申请，请静候抢答结果！！！\"}";ServletActionContext.getResponse().setCharacterEncoding("UTF-8");ServletActionContext.getResponse().getWriter().print(jsonArray);/*[{"qiangda_id":15,"group_id":56,"qiangda_time":1386253774144,"ip":"0:0:0:0:0:0:0:1"},{"qiangda_id":16,"group_id":56,"qiangda_time":1386253977924,"ip":"192.168.43.176"},{"qiangda_id":17,"group_id":56,"qiangda_time":1386253988012,"ip":"192.168.24.70"}]* * {\"name\":\"提示\",\"age\":\"已提交抢答申请，请静候抢答结果！！！\"}* */}} catch (Exception e) {// TODO: handle exceptione.printStackTrace();} finally {dbManager.closeConnection();}}public static void main(String[] args) {// TODO Auto-generated method stubqiangda qiangda = new qiangda ();qiangda.setGroup_id(1);qiangda.setIp("127.0.0.1");qiangda.setQiangda_id(12);qiangda.setQiangda_time((Long.getLong("1245792323546")));JSONArray jsonArray = JSONArray.fromObject(qiangda); System.out.println(jsonArray);}}

源码获取：博客首页 "资源" 里下载！

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源码获取：博客首页 "资源" 里下载！

一、项目运行

项目技术：

管理员登陆控制层：

抽奖控制层一二三等奖设置：

抢答控制层:

源码获取：博客首页 "资源" 里下载！

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