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
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/** * 获取抽奖页面数据 * @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 weixinoauth2token weixinoauth2token = commonutil .getoauth2accesstoken(configutil.appid, configutil.app_secrect, code); // 用户标识 string openid = weixinoauth2token.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
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/** * 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
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/** * 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
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/** * 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;} |
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原文链接：https://blog.csdn.net/lijie18/article/details/57983918
