應公司需求開發一個微信公眾號中抽獎活動

功能：獎品及中獎概率可在后臺配置，滾動刷新中獎名單，控制用戶每日抽獎次數等。

規則：在活動期間，每日可抽獎一次，中獎后填寫個人信息以便獎品的配送。

/** * 獲取抽獎頁面數據 * @param request * @param response * @return * @throws ServletException * @throws IOException */@RequestMapping(value="/queryLotteryActivity")@ResponseBodypublic AppIntReturn queryLotteryActivity(HttpServletRequest request, HttpServletResponse response)		throws ServletException, IOException {	AppIntReturn res = new AppIntReturn();	// 用戶同意授權后，能獲取到code	String code = request.getParameter("code");	// 用戶同意授權	if (!"authdeny".equals(code)) {		// 獲取網頁授權access_token		WeixinOauth2Token weixinOauth2Token = CommonUtil				.getOauth2AccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT, code);		// 用戶標識		String openId = weixinOauth2Token.getOpenId();				if(!StringUtil.isEmpty(openId)){						// 查詢用戶信息			List<CxhWechatMember> memberList = appLotteryService.getMemberList(openId);			// 操作次數			int operNum = 1;  // 可寫成后臺可配置的			if(memberList != null && memberList.size() > 0){				operNum = operNum - memberList.size();				/*// 獲取用戶信息				String accessToken = CommonUtil.getAccessToken(ConfigUtil.APPID, ConfigUtil.APP_SECRECT).getToken();				cxhWechatMember = CommonUtil.getWeChatMemberInfo(accessToken, openId);				// 保存用戶信息				appLotteryService.saveMemberInfo(cxhWechatMember);*/			}						if (null == request.getParameter("activityId") || "".equals(request.getParameter("activityId"))){				res.setResult("-2");				res.setMsg("參數錯誤");				return res;			}			// 查詢活動信息			CxhVoteActivity cxhVoteActivity = appLotteryService.getActivityInfo(request.getParameter("activityId"));			if (null == cxhVoteActivity){				res.setResult("-3");				res.setMsg("暫無該類活動");				return res;			}			CxhVoteAward cxhVoteAward = new CxhVoteAward();			cxhVoteAward.setCxhVoteActivity(cxhVoteActivity);			// 查詢獎品列表			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("請求成功");			res.setData(rtnMap);		}else{			res.setResult("-1");			res.setMsg("授權失敗");		}			}else{		res.setResult("-1");		res.setMsg("授權失敗");	}	return res;}
/** * 中獎名單接口 * @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"); // 中獎		// 查詢中獎用戶名單（分頁）		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("系統異常");		logger.info(e.toString(), e);	}	return appResult;}
/** * 抽獎接口 * @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("參數錯誤");			return appResult;		}		// 查詢活動信息		CxhVoteActivity cxhVoteActivity = appLotteryService.getActivityInfo(request.getParameter("activityId"));		if (null == cxhVoteActivity){			appResult.setResult(-3);			appResult.setMsg("暫無該類活動");			return appResult;		}		CxhVoteAward cxhVoteAward = new CxhVoteAward();		cxhVoteAward.setCxhVoteActivity(cxhVoteActivity);		// 查詢獎品列表		List<CxhVoteAward> awardList = appLotteryService.findAwardList(cxhVoteAward);				Random rd = new Random();		double dd = rd.nextDouble();		double before = 0;		double end = 0;		cxhVoteAward.setLevel("5");  // 5-未中獎				// 計算中獎概率		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){					// 中獎獎品					cxhVoteAward = awardList.get(i);					// 修改獎品剩余數量					cxhVoteAward.setLeftnum(cxhVoteAward.getLeftnum() - 1);					appLotteryService.updateAwardNumber(cxhVoteAward);				}				break;			}		}				// 新增用戶操作記錄		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");		// 保存用戶信息		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("系統異常");		logger.info(e.toString(), e);	}	return appResult;}
/** * 保存中獎用戶信息的接口 * @author lee * @return */@ResponseBody@RequestMapping(value = "/saveMemberInfo")public Object saveMemberInfo(HttpServletRequest request, HttpServletResponse response) {	AppListReturn appResult = new AppListReturn();	try {				// 用戶同意授權后，能獲取到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("參數錯誤");			return appResult;		}					// 查詢用戶信息		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("系統異常");		logger.info(e.toString(), e);	}	return appResult;}