这篇文章主要介绍APP转盘抽奖Java服务端接口的示例分析，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
应公司需求开发一个微信公众号中抽奖活动
功能：奖品及中奖概率可在后台配置，滚动刷新中奖名单，控制用户每日抽奖次数等。
规则：在活动期间，每日可抽奖一次，中奖后填写个人信息以便奖品的配送。
1.获取抽奖页面数据
/**
* 获取抽奖页面数据
* @param request
* @param response
* @return
* @throws ServletException
* @throws IOException
*/
@RequestMapping(value="/queryLotteryActivity")
@ResponseBody
public AppIntReturn queryLotteryActivity(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
AppIntReturn res = new AppIntReturn();
// 用户同意授权后，能获取到code
String code = request.getParameter("code");
// 用户同意授权
if (!"authdeny".equals(code)) {
// 获取网页授权access_token
WeixinOauth3Token weixinOauth3Token = CommonUtil
.getOauth3AccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT, code);
// 用户标识
String openId = weixinOauth3Token.getOpenId();
if(!StringUtil.isEmpty(openId)){
// 查询用户信息
List<CxhWechatMember> memberList = appLotteryService.getMemberList(openId);
// 操作次数
int operNum = 1; // 可写成后台可配置的
if(memberList != null && memberList.size() > 0){
operNum = operNum - memberList.size();
/*// 获取用户信息
String accessToken = CommonUtil.getAccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT).getToken();
cxhWechatMember = CommonUtil.getWeChatMemberInfo(accessToken, openId);
// 保存用户信息
appLotteryService.saveMemberInfo(cxhWechatMember);*/
}
if (null == request.getParameter("activityId") || "".equals(request.getParameter("activityId"))){
res.setResult("-2");
res.setMsg("参数错误");
return res;
}
// 查询活动信息
CxhVoteActivity cxhVoteActivity = appLotteryService.getActivityInfo(request.getParameter("activityId"));
if (null == cxhVoteActivity){
res.setResult("-3");
res.setMsg("暂无该类活动");
return res;
}
CxhVoteAward cxhVoteAward = new CxhVoteAward();
cxhVoteAward.setCxhVoteActivity(cxhVoteActivity);
// 查询奖品列表
List<CxhVoteAward> awardList = appLotteryService.findAwardList(cxhVoteAward);
// 返回Map
Map<String, Object> rtnMap = new HashMap<String, Object>();
rtnMap.put("activity", cxhVoteActivity);
rtnMap.put("awardList", awardList);
rtnMap.put("operNum", operNum);
rtnMap.put("openId", openId);
res.setResult("0");
res.setMsg("请求成功");
res.setData(rtnMap);
}else{
res.setResult("-1");
res.setMsg("授权失败");
}
}else{
res.setResult("-1");
res.setMsg("授权失败");
}
return res;
}2.中奖名单接口
/**
* 中奖名单接口
* @author lee
* @return
*/
@ResponseBody
@RequestMapping(value = "/winningMemberList")
public Object queryWinningMemberList(HttpServletRequest request, HttpServletResponse response) {
AppListReturn appResult = new AppListReturn();
try {
CxhWechatMember cxhWechatMember = new CxhWechatMember();
cxhWechatMember.setIswinning("1"); // 中奖
// 查询中奖用户名单（分页）
Page<CxhWechatMember> pageList = appLotteryService.findPage(new Page<CxhWechatMember>(request, response), cxhWechatMember);
appResult.setData(pageList.getList());
appResult.setPageNumber(pageList.getPageNo());
appResult.setPageSize(pageList.getPageSize());
appResult.setTotal((int) pageList.getCount());
appResult.setTotalPages(pageList.getTotalPage());
appResult.setResult(0);
appResult.setMsg("成功");
} catch (Exception e) {
appResult.setResult(-9);
appResult.setMsg("系统异常");
logger.info(e.toString(), e);
}
return appResult;
}3.抽奖接口
/**
* 抽奖接口
* @author lee
* @return
*/
@ResponseBody
@RequestMapping(value = "/doLottery")
public Object doLottery(HttpServletRequest request, HttpServletResponse response) {
AppListReturn appResult = new AppListReturn();
// 返回Map
Map<String, Object> rtnMap = new HashMap<String, Object>();
String activityId = request.getParameter("activityId");
String openId = request.getParameter("openId");
try {
if (null == activityId || "".equals(activityId) || null == openId || "".equals(openId)){
appResult.setResult(-2);
appResult.setMsg("参数错误");
return appResult;
}
// 查询活动信息
CxhVoteActivity cxhVoteActivity = appLotteryService.getActivityInfo(request.getParameter("activityId"));
if (null == cxhVoteActivity){
appResult.setResult(-3);
appResult.setMsg("暂无该类活动");
return appResult;
}
CxhVoteAward cxhVoteAward = new CxhVoteAward();
cxhVoteAward.setCxhVoteActivity(cxhVoteActivity);
// 查询奖品列表
List<CxhVoteAward> awardList = appLotteryService.findAwardList(cxhVoteAward);
Random rd = new Random();
double dd = rd.nextDouble();
double before = 0;
double end = 0;
cxhVoteAward.setLevel("5"); // 5-未中奖
// 计算中奖概率
for (int i = 0; i < awardList.size(); i++) {
if(i > 0){
before += awardList.get(i-1).getRate().doubleValue();
}
end += awardList.get(i).getRate().doubleValue();
if(dd >= before && dd < end){
if(awardList.get(i).getLeftnum() > 0){
// 中奖奖品
cxhVoteAward = awardList.get(i);
// 修改奖品剩余数量
cxhVoteAward.setLeftnum(cxhVoteAward.getLeftnum() - 1);
appLotteryService.updateAwardNumber(cxhVoteAward);
}
break;
}
}
// 新增用户操作记录
String accessToken = CommonUtil.getAccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT).getToken();
CxhWechatMember cxhWechatMember = CommonUtil.getWeChatMemberInfo(accessToken, openId);
cxhWechatMember.setId(IdGen.uuid());
cxhWechatMember.setJoindate(new Date());
cxhWechatMember.setDelFlag("0");
// 保存用户信息
appLotteryService.saveMemberInfo(cxhWechatMember);
rtnMap.put("awardLevel", cxhVoteAward.getLevel());
rtnMap.put("awardId", cxhVoteAward.getId());
appResult.setData(rtnMap);
appResult.setResult(0);
appResult.setMsg("成功");
} catch (Exception e) {
appResult.setResult(-9);
appResult.setMsg("系统异常");
logger.info(e.toString(), e);
}
return appResult;
}4.保存中奖用户信息的接口
/**
* 保存中奖用户信息的接口
* @author lee
* @return
*/
@ResponseBody
@RequestMapping(value = "/saveMemberInfo")
public Object saveMemberInfo(HttpServletRequest request, HttpServletResponse response) {
AppListReturn appResult = new AppListReturn();
try {
// 用户同意授权后，能获取到code
String openId = request.getParameter("openId");
String username = request.getParameter("username");
String phone = request.getParameter("phone");
String address = request.getParameter("address");
String awardLevel = request.getParameter("awardLevel");
String awardId = request.getParameter("awardId");
if (null == username || "".equals(username)
|| null == phone || "".equals(phone)
|| null == address || "".equals(address)
|| null == openId || "".equals(openId)
|| null == awardLevel || "".equals(awardLevel)
|| null == awardId || "".equals(awardId)){
appResult.setResult(-2);
appResult.setMsg("参数错误");
return appResult;
}
// 查询用户信息
List<CxhWechatMember> memberList = appLotteryService.getMemberList(openId);
CxhWechatMember cxhWechatMember = memberList.get(0);
cxhWechatMember.setUsername(username);
cxhWechatMember.setPhone(phone);
cxhWechatMember.setAddress(address);
cxhWechatMember.setIswinning(awardLevel == "5" ? "0" : "1");
cxhWechatMember.setAwardid(awardId);
appLotteryService.update(cxhWechatMember);
appResult.setResult(0);
appResult.setMsg("成功");
} catch (Exception e) {
appResult.setResult(-9);
appResult.setMsg("系统异常");
logger.info(e.toString(), e);
}
return appResult;
}以上是“APP转盘抽奖Java服务端接口的示例分析”这篇文章的所有内容，感谢各位的阅读！希望分享的内容对大家有帮助，更多相关知识，欢迎关注亿速云行业资讯频道！
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