Java實(shí)戰(zhàn)之晚會(huì)抽獎(jiǎng)系統(tǒng)的實(shí)現(xiàn)
更新時(shí)間：2022年03月14日 16:11:25 作者：qq_1334611189
這篇文章主要介紹了如何利用Java語(yǔ)言編寫(xiě)一個(gè)晚會(huì)抽獎(jiǎng)系統(tǒng)，文中采用到的技術(shù)有Jdbc、Servlert、JavaScript、JQuery、Ajax等，感興趣的可以學(xué)習(xí)一下
一、項(xiàng)目運(yùn)行
環(huán)境配置：
Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）
項(xiàng)目技術(shù)：
Jdbc+ Servlert + html+ css + JavaScript + JQuery + Ajax +等等
二、效果圖
三、核心代碼
管理員登陸控制層
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("登陸成功");
ActionContext.getContext().getSession().put("admin", admin);
return "success";
}else {
ActionContext.getContext().getSession().put("message", "登錄失敗");
return "failed";
}
} catch (Exception e) {
e.printStackTrace();
ActionContext.getContext().getSession().put("message", "登錄失敗");
// 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;
}
}抽獎(jiǎng)控制層一二三等獎(jiǎng)設(shè)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("這個(gè)號(hào)碼已經(jīng)中過(guò)獎(jiǎng)?。?！");
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");
}// 得到抽獎(jiǎng)表中的記錄數(shù)
if (total < 8) {
luck_group = 3;// 三等獎(jiǎng)8個(gè)
} else if (total < 13) {
luck_group = 2;// 二等獎(jiǎng)5個(gè)
} else if (total < 16) {
luck_group = 1;// 一等獎(jiǎng)3個(gè)
} else {
System.out.println("抽獎(jiǎng)總數(shù)已滿！??！");
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("抽獎(jiǎng)數(shù)據(jù)已經(jīng)寫(xiě)入數(shù)據(jù)庫(kù)");
} else {
System.out.println("抽獎(jiǎng)數(shù)據(jù)寫(xiě)入失敗");
}
}
} 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\":\"已提交搶答申請(qǐng)，請(qǐng)靜候搶答結(jié)果?。?！\"}";
ServletActionContext.getResponse().setCharacterEncoding("UTF-8");
ServletActionContext.getResponse().getWriter().print(jsonArray);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
} finally {
dbManager.closeConnection();
}
}
}搶答控制層
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("這個(gè)號(hào)碼已經(jīng)中過(guò)獎(jiǎng)?。?！");
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");
}// 得到抽獎(jiǎng)表中的記錄數(shù)
if (total < 8) {
luck_group = 3;// 三等獎(jiǎng)8個(gè)
} else if (total < 13) {
luck_group = 2;// 二等獎(jiǎng)5個(gè)
} else if (total < 16) {
luck_group = 1;// 一等獎(jiǎng)3個(gè)
} else {
System.out.println("抽獎(jiǎng)總數(shù)已滿！??！");
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("抽獎(jiǎng)數(shù)據(jù)已經(jīng)寫(xiě)入數(shù)據(jù)庫(kù)");
} else {
System.out.println("抽獎(jiǎng)數(shù)據(jù)寫(xiě)入失敗");
}
}
} 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\":\"已提交搶答申請(qǐng)，請(qǐng)靜候搶答結(jié)果?。?！\"}";
ServletActionContext.getResponse().setCharacterEncoding("UTF-8");
ServletActionContext.getResponse().getWriter().print(jsonArray);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
} finally {
dbManager.closeConnection();
}
}
}到此這篇關(guān)于Java實(shí)戰(zhàn)之晚會(huì)抽獎(jiǎng)系統(tǒng)的實(shí)現(xiàn)的文章就介紹到這了,更多相關(guān)Java抽獎(jiǎng)系統(tǒng)內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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