因为申请的是个人未认证的订阅号，开启开发者模式以后没有菜单，只能使用接收消息—回复消息的方式来开发
一、实现思路
1、24点题库
第一步是建一张题库表，基础字段是："num1"、"num2"、"num3"、"num4"、"答案"五个，如果未来需要"最难题排行"功能，需要再加入"答题数、答对数、命中率"三个字段
我的题库来自http://www.cnblogs.com/grenet/archive/2013/02/28/2936965.html
我把内容复制到excel里，按逗号切割了一下，然后又复制到数据库表里，因为想操作方便点，就去掉了带有数字"10"的题目
2、出题
先计算上一题结果，因为有404道题，从404中取一个随机数，作为题目id查询题目返回
3、计算答案
（1）先要把可能接收到的全角括号、长短横杠、"X"替换成能识别的"+-*/"
（2）然后再判断答案里的4个数字是否和题目里的一致，如果题目是"1 2 3 5"回答是"4+4+4+4"就不能通过
（3）借助ScriptEngineManager类和ScriptEngine类将表达式eval成结果，判断是否是"24"
（4）完成判断以后根据回复时间给出用户得分，用时越少得分越多，然后更新用户的"积分、答题数、答对数、命中率"和题目的"答题数、答对数、命中率"
4、排行榜
按用户表的积分大小倒序输出排名即可，需要注意的是如果前10名没有当前用户，要再输出一行当前用户的排名
5、答题状态
出题后用户会切换成答题状态，回复的内容除了关键字都会当做答案来计算，回复"24"、"答案"、"公告"和正确答案后会再切换成正常状态
二、核心源码
package org.xs.dntown.wx.game24.modules.web;
import java.text.NumberFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Random;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.xs.dntown.wx.common.utils.MessageUtil;
import org.xs.dntown.wx.common.web.BaseController;
import org.xs.dntown.wx.core.modules.entity.UserInfo;
import org.xs.dntown.wx.core.modules.entity.enums.ModuleEnum;
import org.xs.dntown.wx.core.modules.entity.req.BaseMsgReq;
import org.xs.dntown.wx.core.modules.service.LogService;
import org.xs.dntown.wx.core.modules.service.UserService;
import org.xs.dntown.wx.game24.modules.entity.Game24UserInfo;
import org.xs.dntown.wx.game24.modules.entity.QuestionInfo;
import org.xs.dntown.wx.game24.modules.entity.enums.StepEnum;
import org.xs.dntown.wx.game24.modules.service.Game24UserService;
import org.xs.dntown.wx.game24.modules.service.QuestionService;
/**
* 核心Controller
*/
@Controller(value = "game24CoreController")
@RequestMapping("game24")
public class CoreController extends BaseController {
@Autowired
private Game24UserService game24UserService;
@Autowired
private QuestionService questionService;
@Autowired
private UserService userService;
@Autowired
private LogService logService;
/**
* 文本消息
*/
@ResponseBody
@RequestMapping(value = "msg", produces = { "text/plain;charset=utf-8" })
public String textMsg(HttpServletRequest request) throws Exception {
String result = "";
String openId = "";
String userName = "";
String content = "";
try {
//得到接收消息实体
BaseMsgReq msgReq = (BaseMsgReq)request.getAttribute("msgReq");
openId = msgReq.getFromUserName();
content = msgReq.getContent();
//得到用户信息实体
UserInfo userInfo = (UserInfo)request.getAttribute("userInfo");
userName = userInfo.getUserName();
log.info("收到消息：" + msgReq.getContent());
//更新模块
userService.setModule(msgReq.getFromUserName(), ModuleEnum.game24.getValue());
//得到game24用户信息实体
Game24UserInfo gUserInfo = game24UserService.getByOpenId(userInfo.getOpenId());
if(gUserInfo == null) {
log.info("新增game24用户");
//如果没有就新增
gUserInfo = new Game24UserInfo();
gUserInfo.setOpenId(userInfo.getOpenId());
gUserInfo.setModuleStep(StepEnum.normal.getValue());
gUserInfo.setStepTime(new Date());
gUserInfo.setIsAnswered(false);
game24UserService.add(gUserInfo);
}
//刷新模块（1小时）
long timeDiff = new Date().getTime() - userInfo.getModuleTime().getTime();
long hoursDiff = timeDiff / (1000 * 60 * 60);
if(hoursDiff >= 1) {
game24UserService.setStep(userInfo.getOpenId(), StepEnum.normal.getValue());
gUserInfo.setModuleStep(StepEnum.normal.getValue());
}
log.info("开始转入步骤");
//出题
if(msgReq.getContent().equals("24")) {
//计算上一道题
if(!StringUtils.isEmpty(gUserInfo.getQuestionId()) && gUserInfo.getModuleStep().equals(StepEnum.answer.getValue())) {
//处理答题结果
finishAnswer(gUserInfo, msgReq);
}
log.info("开始下一题");
//下一题
Random r = new Random();
String questionId = String.valueOf(r.nextInt(403) + 1);
gUserInfo.setQuestionId(questionId);
gUserInfo.setModuleStep(StepEnum.answer.getValue());
gUserInfo.setStepTime(new Date());
gUserInfo.setIsAnswered(false);
//更新模块
game24UserService.update(gUserInfo);
//返回题目
QuestionInfo questionInfo = questionService.getById(questionId);
result = "请听题：" + questionInfo.getNum1() + "、" + questionInfo.getNum2() + "、" + questionInfo.getNum3() + "、" + questionInfo.getNum4();
logService.addInfoLog(openId, userName, content, result, ModuleEnum.game24.getValue(), StepEnum.answer.getValue());
result = MessageUtil.msgReqToXml(msgReq, result);
log.info(result);
return result;
}
//答案
else if(msgReq.getContent().equals("答案")) {
//返回答案
if(!StringUtils.isEmpty(gUserInfo.getQuestionId())) {
log.info("返回答案");
//完成答题
finishAnswer(gUserInfo, msgReq);
//设置步骤
gUserInfo.setModuleStep(StepEnum.normal.getValue());
gUserInfo.setStepTime(new Date());
game24UserService.update(gUserInfo);
//答案
String answer = questionService.getAnswer(gUserInfo.getQuestionId());
logService.addInfoLog(openId, userName, content, answer, ModuleEnum.game24.getValue(), StepEnum.answer.getValue());
result = MessageUtil.msgReqToXml(msgReq, answer);
log.info(result);
return result;
}
}
//排行榜
else if(msgReq.getContent().equals("排行") || msgReq.getContent().equals("排行榜")) {
log.info("返回排行榜");
result += "【排行榜】
";
boolean flag = false;
List<Game24UserInfo> list = game24UserService.getTopScope(1000);
if(list != null && list.size() > 0) {
for (int i = 0; i < list.size(); i++) {
if(list.get(i).getOpenId().equals(gUserInfo.getOpenId())) {
flag = true;
}
//TODO 优化
UserInfo sUserInfo = userService.getByOpenId(list.get(i).getOpenId());
if(sUserInfo != null) {
result += "No." + (i + 1) + " 『" + sUserInfo.getUserName() + "』(" + list.get(i).getScore() + "分)
";
}
}
}
if(!flag) {
result += "No." + (Integer.parseInt(game24UserService.getRankScope(gUserInfo.getScore()))) + " 『" + userInfo.getUserName() + "』(" + gUserInfo.getScore() + "分)";
} else {
result = result.substring(0, result.length() - 1);
}
logService.addInfoLog(openId, userName, content, result, ModuleEnum.game24.getValue(), StepEnum.normal.getValue());
result = MessageUtil.msgReqToXml(msgReq, result);
log.info(result);
return result;
}
//如果是新进来就刷新状态
if(msgReq.getContent().equals("24点")) {
//完成答题
if(!StringUtils.isEmpty(gUserInfo.getQuestionId())) {
finishAnswer(gUserInfo, msgReq);
}
//设置步骤
gUserInfo.setModuleStep(StepEnum.normal.getValue());
gUserInfo.setStepTime(new Date());
game24UserService.update(gUserInfo);
}
//如果是答题状态
if(gUserInfo.getModuleStep().equals(StepEnum.answer.getValue())) {
//返回处理答题结果
result = finishAnswer(gUserInfo, msgReq);
logService.addInfoLog(openId, userName, content, result, ModuleEnum.game24.getValue(), StepEnum.answer.getValue());
result = MessageUtil.msgReqToXml(msgReq, result);
log.info(result);
return result;
}
//返回game24公告
result += "『24点游戏』
";
result += "【规则】
";
result += "利用 + - * / ( ) 列出综合算式
结果是24即可
";
result += "【说明】
";
result += "1、输入“24”：开始答题
";
result += "2、输入“答案”：查看答案
";
result += "3、输入“排行”：查看排行
";
result += "4、输入“公告”：返回首页";
logService.addInfoLog(openId, userName, content, result, ModuleEnum.game24.getValue(), StepEnum.normal.getValue());
result = MessageUtil.msgReqToXml(msgReq, result);
} catch (Exception e) {
log.debug("执行失败");
logService.addErrorLog(openId, userName, content, "", ModuleEnum.game24.getValue(), StepEnum.normal.getValue(), e);
e.printStackTrace();
}
//返回消息
log.info(result);
return result;
}
/**
* 处理答题结果
*/
private String finishAnswer(Game24UserInfo gUserInfo, BaseMsgReq msgReq) {
log.info("处理答题结果");
String result = "";
//题目
QuestionInfo questionInfo = questionService.getById(gUserInfo.getQuestionId());
//计算
String answer = msgReq.getContent();
answer = answer.replace("（", "(").replace("）", ")").replace("÷", "/").replace("／", "/").replace("×", "*").replace("－", "-").replace("—", "-").replace(" ", "");
//计算表达式结果
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine se = manager.getEngineByName("js");
Double res = (double) 0;
try {
//校对答案
boolean flag = true;
String nums = answer.replace("(", "").replace(")", "").replace("*", "").replace("/", "").replace("-", "").replace("+", "");
if(nums.length() != 4) {
flag = false;
} else {
char[] strs = nums.toCharArray();
Arrays.sort(strs);
if(!String.valueOf(strs).equals(String.valueOf(questionInfo.getNum1()) + String.valueOf(questionInfo.getNum2()) + String.valueOf(questionInfo.getNum3()) + String.valueOf(questionInfo.getNum4())))
{
flag = false;
}
}
if(flag) {
res =(Double) se.eval(answer);
} else {
res = 0.0;
}
} catch (ScriptException e) {
log.debug("运算失败");
//e.printStackTrace();
}
//回答正确
if(res == 24) {
log.info("回答正确");
//计算用时
long timeDiff = new Date().getTime() - gUserInfo.getStepTime().getTime();
long secondsDiff = timeDiff / (1000);
int score = 0;
//30秒以内加5分
if(secondsDiff < 30) {
score = 5;
}
//60秒以内加3分
else if(secondsDiff < 60) {
score = 3;
}
//加1分
else {
score = 1;
}
result = "答对了！用时" + secondsDiff + "s，积分 +" + score;
//更新用户积分、次数、答对次数、命中率
gUserInfo.setScore(gUserInfo.getScore() + score);
gUserInfo.setRightTimes(gUserInfo.getRightTimes() + 1);
gUserInfo.setTimes(gUserInfo.getTimes() + 1);
NumberFormat numberFormat = NumberFormat.getInstance();
numberFormat.setMaximumFractionDigits(2);
gUserInfo.setHitRate(Float.valueOf(numberFormat.format((float) gUserInfo.getRightTimes() / (float) gUserInfo.getTimes() * 100)));
gUserInfo.setModuleStep(StepEnum.normal.getValue());
gUserInfo.setStepTime(new Date());
gUserInfo.setIsAnswered(false);
//更新试题次数、答对次数、命中率
questionInfo.setRightTimes(questionInfo.getRightTimes() + 1);
questionInfo.setTimes(questionInfo.getTimes() + 1);
numberFormat.setMaximumFractionDigits(2);
questionInfo.setHitRate(Float.valueOf(numberFormat.format((float) questionInfo.getRightTimes() / (float) questionInfo.getTimes() * 100)));
}
//回答错误
else {
log.info("回答错误");
//如果第一次回答
if(!gUserInfo.getIsAnswered()) {
//更新用户积分、次数、答对次数、命中率
gUserInfo.setTimes(gUserInfo.getTimes() + 1);
NumberFormat numberFormat = NumberFormat.getInstance();
numberFormat.setMaximumFractionDigits(2);
gUserInfo.setHitRate(Float.valueOf(numberFormat.format((float) gUserInfo.getRightTimes() / (float) gUserInfo.getTimes() * 100)));
gUserInfo.setIsAnswered(true);
//更新试题次数、答对次数、命中率
questionInfo.setTimes(questionInfo.getTimes() + 1);
numberFormat.setMaximumFractionDigits(2);
questionInfo.setHitRate(Float.valueOf(numberFormat.format((float) questionInfo.getRightTimes() / (float) questionInfo.getTimes() * 100)));
}
//gUserInfo.setModuleStep(StepEnum.answer.getValue());
//gUserInfo.setStepTime(new Date());
result = "错误";
}
//更新game24用户
game24UserService.update(gUserInfo);
//更新题目
questionService.update(questionInfo);
return result;
}
}
三、演示地址
