Java项目:晚会抽奖系统(java+Jdbc+Servlet+Ajax+mysql)
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";
}
@Override
public Object getModel() {
// TODO Auto-generated method stub
if (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;
@Override
public Object getModel() {
// TODO Auto-generated method stub
if (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_dogList = new ArrayList();
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 exception
e.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 qiangdaList = new ArrayList();
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 exception
e.printStackTrace();
} finally {
dbManager.closeConnection();
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
qiangda 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！