计算机毕业设计选题推荐-在线学习平台-Java/Python项目实战

✨作者主页：IT研究室✨
个人简介：曾从事计算机专业培训教学，擅长Java、Python、微信小程序、Golang、安卓Android等项目实战。接项目定制开发、代码讲解、答辩教学、文档编写、降重等。
☑文末获取源码☑
精彩专栏推荐⬇⬇⬇
Java项目
Python项目
安卓项目
微信小程序项目

文章目录

一、前言
二、开发环境
三、系统界面展示
四、代码参考
五、论文参考
六、系统视频
结语

一、前言

在线教育作为教育技术变革的产物，已经在国内外迅速兴起，成为教育服务的重要组成部分。根据《2021年中国在线教育行业市场现状、细分市场及发展趋势分析》报告，我国在线教育用户规模达到3.42亿，市场规模约达4230亿元，显示出在线教育行业的巨大潜力和发展空间。在线学习平台通过提供灵活的学习时间和丰富的学习资源，满足了不同用户群体的教育需求。

尽管在线教育行业发展迅速，但仍存在一些问题。例如，学生在使用在线学习平台时可能面临网络延迟或卡顿的问题，影响学习效率。此外，平台的交互性不足，导致师生之间难以实现有效沟通，降低了学习体验的质量。还有，一些在线教育平台的个性化服务和学习效果评估功能不够完善，难以满足用户的多样化需求。

本课题旨在设计并实现一个功能齐全、用户友好的在线学习平台，该平台将提供稳定的网络连接、丰富的学习资源、高效的师生互动、以及精准的学习效果评估。通过该系统，希望能够为用户带来更加便捷、高效、个性化的学习体验。

在在线学习平台中，管理员负责用户账户的创建与维护、课程内容的审核与更新、学习资源的整合与管理、平台功能的持续优化与升级；教师能够创建和发布课程、管理在线课堂、跟踪学生的学习进度、进行在线辅导和答疑；学生用户可以浏览课程目录、选择并参与课程学习、提交作业和参与讨论、接收学习反馈和进度报告。系统通过这些功能模块的整合，旨在提供一个全面、互动的在线学习环境，满足不同用户角色的需求，优化学习流程，提高教育质量。

本课题的研究具有重要的理论意义和实际意义。从理论角度来看，它为在线教育领域提供了新的研究思路，即如何利用信息技术提升在线学习体验和教学效果。从实际角度来看，在线学习平台的应用将有助于提高教育资源的利用效率，促进教育公平，提升学习者的自主学习能力，推动教育现代化的发展。同时，系统的推广应用还将为教育工作者提供更多的教学创新空间，为学习者创造更加开放和灵活的学习环境。

二、开发环境

开发语言：Java/Python
数据库：MySQL
系统架构：B/S
后端：SpringBoot/SSM/Django/Flask
前端：Vue

三、系统界面展示

在线学习平台界面展示：
教师-课程信息管理：

教师-作业管理：

教师-试题管理：

学生-查看课程信息：

学生-填写作业：

学生-查看错题本：

四、代码参考

项目实战代码参考：

@RestController
@RequestMapping("/kechengxinxi")
public class KechengxinxiController {
    @Autowired
    private KechengxinxiService kechengxinxiService;

    @Autowired
    private StoreupService storeupService;


    @Autowired
    private XuexikechengService xuexikechengService;

    


    /**
     * 后端列表
     */
    @RequestMapping("/page")
    public R page(@RequestParam Map<String, Object> params,KechengxinxiEntity kechengxinxi,
		HttpServletRequest request){
		String tableName = request.getSession().getAttribute("tableName").toString();
		if(tableName.equals("jiaoshi")) {
			kechengxinxi.setJiaoshigonghao((String)request.getSession().getAttribute("username"));
		}
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();

		PageUtils page = kechengxinxiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kechengxinxi), params), params));

        return R.ok().put("data", page);
    }
    
    /**
     * 前端列表
     */
	@IgnoreAuth
    @RequestMapping("/list")
    public R list(@RequestParam Map<String, Object> params,KechengxinxiEntity kechengxinxi, 
		HttpServletRequest request){
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();

		PageUtils page = kechengxinxiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kechengxinxi), params), params));
        return R.ok().put("data", page);
    }

	/**
     * 列表
     */
    @RequestMapping("/lists")
    public R list( KechengxinxiEntity kechengxinxi){
       	EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
      	ew.allEq(MPUtil.allEQMapPre( kechengxinxi, "kechengxinxi")); 
        return R.ok().put("data", kechengxinxiService.selectListView(ew));
    }

	 /**
     * 查询
     */
    @RequestMapping("/query")
    public R query(KechengxinxiEntity kechengxinxi){
        EntityWrapper< KechengxinxiEntity> ew = new EntityWrapper< KechengxinxiEntity>();
 		ew.allEq(MPUtil.allEQMapPre( kechengxinxi, "kechengxinxi")); 
		KechengxinxiView kechengxinxiView =  kechengxinxiService.selectView(ew);
		return R.ok("查询课程信息成功").put("data", kechengxinxiView);
    }
	
    /**
     * 后端详情
     */
    @RequestMapping("/info/{id}")
    public R info(@PathVariable("id") Long id){
        KechengxinxiEntity kechengxinxi = kechengxinxiService.selectById(id);
		kechengxinxi.setClicknum(kechengxinxi.getClicknum()+1);
		kechengxinxiService.updateById(kechengxinxi);
        return R.ok().put("data", kechengxinxi);
    }

    /**
     * 前端详情
     */
	@IgnoreAuth
    @RequestMapping("/detail/{id}")
    public R detail(@PathVariable("id") Long id){
        KechengxinxiEntity kechengxinxi = kechengxinxiService.selectById(id);
		kechengxinxi.setClicknum(kechengxinxi.getClicknum()+1);
		kechengxinxiService.updateById(kechengxinxi);
        return R.ok().put("data", kechengxinxi);
    }
    



    /**
     * 后端保存
     */
    @RequestMapping("/save")
    public R save(@RequestBody KechengxinxiEntity kechengxinxi, HttpServletRequest request){
    	//ValidatorUtils.validateEntity(kechengxinxi);
        kechengxinxiService.insert(kechengxinxi);
        return R.ok();
    }
    
    /**
     * 前端保存
     */
    @RequestMapping("/add")
    public R add(@RequestBody KechengxinxiEntity kechengxinxi, HttpServletRequest request){
    	//ValidatorUtils.validateEntity(kechengxinxi);
        kechengxinxiService.insert(kechengxinxi);
        return R.ok();
    }




    /**
     * 修改
     */
    @RequestMapping("/update")
    @Transactional
    public R update(@RequestBody KechengxinxiEntity kechengxinxi, HttpServletRequest request){
        //ValidatorUtils.validateEntity(kechengxinxi);
        kechengxinxiService.updateById(kechengxinxi);//全部更新
        return R.ok();
    }

    /**
     * 审核
     */
    @RequestMapping("/shBatch")
    @Transactional
    public R update(@RequestBody Long[] ids, @RequestParam String sfsh, @RequestParam String shhf){
        List<KechengxinxiEntity> list = new ArrayList<KechengxinxiEntity>();
        for(Long id : ids) {
            KechengxinxiEntity kechengxinxi = kechengxinxiService.selectById(id);
            kechengxinxi.setSfsh(sfsh);
            kechengxinxi.setShhf(shhf);
            list.add(kechengxinxi);
        }
        kechengxinxiService.updateBatchById(list);
        return R.ok();
    }


    

    /**
     * 删除
     */
    @RequestMapping("/delete")
    public R delete(@RequestBody Long[] ids){
        kechengxinxiService.deleteBatchIds(Arrays.asList(ids));
        return R.ok();
    }
    
	
	/**
     * 前端智能排序
     */
	@IgnoreAuth
    @RequestMapping("/autoSort")
    public R autoSort(@RequestParam Map<String, Object> params,KechengxinxiEntity kechengxinxi, HttpServletRequest request,String pre){
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        Map<String, Object> newMap = new HashMap<String, Object>();
        Map<String, Object> param = new HashMap<String, Object>();
		Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();
		while (it.hasNext()) {
			Map.Entry<String, Object> entry = it.next();
			String key = entry.getKey();
			String newKey = entry.getKey();
			if (pre.endsWith(".")) {
				newMap.put(pre + newKey, entry.getValue());
			} else if (StringUtils.isEmpty(pre)) {
				newMap.put(newKey, entry.getValue());
			} else {
				newMap.put(pre + "." + newKey, entry.getValue());
			}
		}
		params.put("sort", "clicknum");
        params.put("order", "desc");
		PageUtils page = kechengxinxiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kechengxinxi), params), params));
        return R.ok().put("data", page);
    }


    /**
     * 协同算法（基于用户的协同算法）
     */
    @RequestMapping("/autoSort2")
    public R autoSort2(@RequestParam Map<String, Object> params,KechengxinxiEntity kechengxinxi, HttpServletRequest request){
        String userName = (String)request.getSession().getAttribute("username");
        Integer limit = params.get("limit")==null?10:Integer.parseInt(params.get("limit").toString());
        List<XuexikechengEntity> xuexikechengList = xuexikechengService.selectList(new EntityWrapper<XuexikechengEntity>());
        Map<String, Map<String, Double>> ratings = new HashMap<>();
        if(xuexikechengList!=null && xuexikechengList.size()>0) {
            for(XuexikechengEntity xuexikecheng : xuexikechengList) {
                Map<String, Double> userRatings = null;
                if(ratings.containsKey(xuexikecheng.getZhanghao().toString())) {
                    userRatings = ratings.get(xuexikecheng.getZhanghao().toString());
                } else {
                    userRatings = new HashMap<>();
                    ratings.put(xuexikecheng.getZhanghao().toString(), userRatings);
                }
                if(userRatings.containsKey(xuexikecheng.getKechengleixing().toString())) {
                    userRatings.put(xuexikecheng.getKechengleixing().toString(), userRatings.get(xuexikecheng.getKechengleixing().toString())+1.0);
                } else {
                    userRatings.put(xuexikecheng.getKechengleixing().toString(), 1.0);
                }

            }
        }
        // 创建协同过滤对象
        UserBasedCollaborativeFiltering filter = new UserBasedCollaborativeFiltering(ratings);

        // 为指定用户推荐物品
        String targetUser = userName;
        int numRecommendations = limit;
        List<String> recommendations = filter.recommendItems(targetUser, numRecommendations);

        // 输出推荐结果
        System.out.println("Recommendations for " + targetUser + ":");
        for (String item : recommendations) {
            System.out.println(item);
        }

        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        ew.in("kechengleixing", String.join(",", recommendations));
        if(recommendations!=null && recommendations.size()>0) {
            ew.last("order by FIELD(kechengleixing, "+"'"+String.join("','", recommendations)+"'"+")");
        }

        PageUtils page = kechengxinxiService.queryPage(params, ew);
        List<KechengxinxiEntity> pageList = (List<KechengxinxiEntity>)page.getList();
        if(pageList.size()<limit) {
            int toAddNum = limit-pageList.size();
            ew = new EntityWrapper<KechengxinxiEntity>();
            ew.notIn("kechengleixing", recommendations);
            ew.orderBy("id", false);
            ew.last("limit "+toAddNum);
            pageList.addAll(kechengxinxiService.selectList(ew));
        } else if(pageList.size()>limit) {
            pageList = pageList.subList(0, limit);
        }
        page.setList(pageList);

        return R.ok().put("data", page);
    }



    @RequestMapping("/importExcel")
    public R importExcel(@RequestParam("file") MultipartFile file){
        try {
            //获取输入流
            InputStream inputStream = file.getInputStream();
            //创建读取工作簿
            Workbook workbook = WorkbookFactory.create(inputStream);
            //获取工作表
            Sheet sheet = workbook.getSheetAt(0);
            //获取总行
            int rows=sheet.getPhysicalNumberOfRows();
            if(rows>1){
                //获取单元格
                for (int i = 1; i < rows; i++) {
                    Row row = sheet.getRow(i);
                    KechengxinxiEntity kechengxinxiEntity =new KechengxinxiEntity();
                    kechengxinxiEntity.setId(new Date().getTime());
                     
                    //想数据库中添加新对象
                    kechengxinxiService.insert(kechengxinxiEntity);//方法
                }
            }
            inputStream.close();
        } catch (InvalidFormatException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.ok("导入成功");
    }

    /**
     * （按值统计）
     */
    @RequestMapping("/value/{xColumnName}/{yColumnName}")
    public R value(@PathVariable("yColumnName") String yColumnName, @PathVariable("xColumnName") String xColumnName,HttpServletRequest request) {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("xColumn", xColumnName);
        params.put("yColumn", yColumnName);
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
		String tableName = request.getSession().getAttribute("tableName").toString();
		if(tableName.equals("jiaoshi")) {
            ew.eq("jiaoshigonghao", (String)request.getSession().getAttribute("username"));
		}
        List<Map<String, Object>> result = kechengxinxiService.selectValue(params, ew);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        for(Map<String, Object> m : result) {
            for(String k : m.keySet()) {
                if(m.get(k) instanceof Date) {
                    m.put(k, sdf.format((Date)m.get(k)));
                }
            }
        }
        return R.ok().put("data", result);
    }

    /**
     * （按值统计(多)）
     */
    @RequestMapping("/valueMul/{xColumnName}")
    public R valueMul(@PathVariable("xColumnName") String xColumnName,@RequestParam String yColumnNameMul, HttpServletRequest request) {
        String[] yColumnNames = yColumnNameMul.split(",");
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("xColumn", xColumnName);
        List<List<Map<String, Object>>> result2 = new ArrayList<List<Map<String,Object>>>();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        String tableName = request.getSession().getAttribute("tableName").toString();
        if(tableName.equals("jiaoshi")) {
            ew.eq("jiaoshigonghao", (String)request.getSession().getAttribute("username"));
        }
        for(int i=0;i<yColumnNames.length;i++) {
            params.put("yColumn", yColumnNames[i]);
            List<Map<String, Object>> result = kechengxinxiService.selectValue(params, ew);
            for(Map<String, Object> m : result) {
                for(String k : m.keySet()) {
                    if(m.get(k) instanceof Date) {
                        m.put(k, sdf.format((Date)m.get(k)));
                    }
                }
            }
            result2.add(result);
        }
        return R.ok().put("data", result2);
    }

    /**
     * （按值统计）时间统计类型
     */
    @RequestMapping("/value/{xColumnName}/{yColumnName}/{timeStatType}")
    public R valueDay(@PathVariable("yColumnName") String yColumnName, @PathVariable("xColumnName") String xColumnName, @PathVariable("timeStatType") String timeStatType,HttpServletRequest request) {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("xColumn", xColumnName);
        params.put("yColumn", yColumnName);
        params.put("timeStatType", timeStatType);
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        String tableName = request.getSession().getAttribute("tableName").toString();
        if(tableName.equals("jiaoshi")) {
            ew.eq("jiaoshigonghao", (String)request.getSession().getAttribute("username"));
        }
        List<Map<String, Object>> result = kechengxinxiService.selectTimeStatValue(params, ew);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        for(Map<String, Object> m : result) {
            for(String k : m.keySet()) {
                if(m.get(k) instanceof Date) {
                    m.put(k, sdf.format((Date)m.get(k)));
                }
            }
        }
        return R.ok().put("data", result);
    }

    /**
     * （按值统计）时间统计类型(多)
     */
    @RequestMapping("/valueMul/{xColumnName}/{timeStatType}")
    public R valueMulDay(@PathVariable("xColumnName") String xColumnName, @PathVariable("timeStatType") String timeStatType,@RequestParam String yColumnNameMul,HttpServletRequest request) {
        String[] yColumnNames = yColumnNameMul.split(",");
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("xColumn", xColumnName);
        params.put("timeStatType", timeStatType);
        List<List<Map<String, Object>>> result2 = new ArrayList<List<Map<String,Object>>>();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        String tableName = request.getSession().getAttribute("tableName").toString();
        if(tableName.equals("jiaoshi")) {
            ew.eq("jiaoshigonghao", (String)request.getSession().getAttribute("username"));
        }
        for(int i=0;i<yColumnNames.length;i++) {
            params.put("yColumn", yColumnNames[i]);
            List<Map<String, Object>> result = kechengxinxiService.selectTimeStatValue(params, ew);
            for(Map<String, Object> m : result) {
                for(String k : m.keySet()) {
                    if(m.get(k) instanceof Date) {
                        m.put(k, sdf.format((Date)m.get(k)));
                    }
                }
            }
            result2.add(result);
        }
        return R.ok().put("data", result2);
    }

    /**
     * 分组统计
     */
    @RequestMapping("/group/{columnName}")
    public R group(@PathVariable("columnName") String columnName,HttpServletRequest request) {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("column", columnName);
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        String tableName = request.getSession().getAttribute("tableName").toString();
        if(tableName.equals("jiaoshi")) {
            ew.eq("jiaoshigonghao", (String)request.getSession().getAttribute("username"));
        }
        List<Map<String, Object>> result = kechengxinxiService.selectGroup(params, ew);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        for(Map<String, Object> m : result) {
            for(String k : m.keySet()) {
                if(m.get(k) instanceof Date) {
                    m.put(k, sdf.format((Date)m.get(k)));
                }
            }
        }
        return R.ok().put("data", result);
    }




    /**
     * 总数量
     */
    @RequestMapping("/count")
    public R count(@RequestParam Map<String, Object> params,KechengxinxiEntity kechengxinxi, HttpServletRequest request){
        String tableName = request.getSession().getAttribute("tableName").toString();
        if(tableName.equals("jiaoshi")) {
            kechengxinxi.setJiaoshigonghao((String)request.getSession().getAttribute("username"));
        }
        EntityWrapper<KechengxinxiEntity> ew = new EntityWrapper<KechengxinxiEntity>();
        int count = kechengxinxiService.selectCount(MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, kechengxinxi), params), params));
        return R.ok().put("data", count);
    }



}

@RestController
@RequestMapping("/exampaper")
public class ExampaperController {
    @Autowired
    private ExampaperService exampaperService;




    @Autowired
    private ExamquestionService examquestionService;

    @Autowired
    private ExamquestionbankService examquestionbankService;

    @Autowired
    private ExamrecordService examrecordService;
    


    /**
     * 后端列表
     */
    @RequestMapping("/page")
    public R page(@RequestParam Map<String, Object> params,ExampaperEntity exampaper,
		HttpServletRequest request){
        EntityWrapper<ExampaperEntity> ew = new EntityWrapper<ExampaperEntity>();

		PageUtils page = exampaperService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, exampaper), params), params));

        return R.ok().put("data", page);
    }
    
    /**
     * 前端列表
     */
	@IgnoreAuth
    @RequestMapping("/list")
    public R list(@RequestParam Map<String, Object> params,ExampaperEntity exampaper, 
		HttpServletRequest request){
        EntityWrapper<ExampaperEntity> ew = new EntityWrapper<ExampaperEntity>();

		PageUtils page = exampaperService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, exampaper), params), params));
        return R.ok().put("data", page);
    }

	/**
     * 列表
     */
    @RequestMapping("/lists")
    public R list( ExampaperEntity exampaper){
       	EntityWrapper<ExampaperEntity> ew = new EntityWrapper<ExampaperEntity>();
      	ew.allEq(MPUtil.allEQMapPre( exampaper, "exampaper")); 
        return R.ok().put("data", exampaperService.selectListView(ew));
    }

	 /**
     * 查询
     */
    @RequestMapping("/query")
    public R query(ExampaperEntity exampaper){
        EntityWrapper< ExampaperEntity> ew = new EntityWrapper< ExampaperEntity>();
 		ew.allEq(MPUtil.allEQMapPre( exampaper, "exampaper")); 
		ExampaperView exampaperView =  exampaperService.selectView(ew);
		return R.ok("查询线上测试表成功").put("data", exampaperView);
    }
	
    /**
     * 后端详情
     */
    @RequestMapping("/info/{id}")
    public R info(@PathVariable("id") Long id){
        ExampaperEntity exampaper = exampaperService.selectById(id);
        return R.ok().put("data", exampaper);
    }

    /**
     * 前端详情
     */
	@IgnoreAuth
    @RequestMapping("/detail/{id}")
    public R detail(@PathVariable("id") Long id){
        ExampaperEntity exampaper = exampaperService.selectById(id);
        return R.ok().put("data", exampaper);
    }
    



    /**
     * 后端保存
     */
    @RequestMapping("/save")
    public R save(@RequestBody ExampaperEntity exampaper, HttpServletRequest request){
    	//ValidatorUtils.validateEntity(exampaper);
        exampaperService.insert(exampaper);
        return R.ok();
    }
    
    /**
     * 前端保存
     */
    @RequestMapping("/add")
    public R add(@RequestBody ExampaperEntity exampaper, HttpServletRequest request){
    	//ValidatorUtils.validateEntity(exampaper);
        exampaperService.insert(exampaper);
        return R.ok();
    }


     /**
     * 获取用户密保
     */
    @RequestMapping("/security")
    @IgnoreAuth
    public R security(@RequestParam String username){
        ExampaperEntity exampaper = exampaperService.selectOne(new EntityWrapper<ExampaperEntity>().eq("", username));
        return R.ok().put("data", exampaper);
    }


    /**
     * 修改
     */
    @RequestMapping("/update")
    @Transactional
    @IgnoreAuth
    public R update(@RequestBody ExampaperEntity exampaper, HttpServletRequest request){
        //ValidatorUtils.validateEntity(exampaper);
        exampaperService.updateById(exampaper);//全部更新
        return R.ok();
    }



    

    /**
     * 删除
     */
    @RequestMapping("/delete")
    public R delete(@RequestBody Long[] ids){
        exampaperService.deleteBatchIds(Arrays.asList(ids));
        return R.ok();
    }
    
	
	/**
     * 前端智能排序
     */
	@IgnoreAuth
    @RequestMapping("/autoSort")
    public R autoSort(@RequestParam Map<String, Object> params,ExampaperEntity exampaper, HttpServletRequest request,String pre){
        EntityWrapper<ExampaperEntity> ew = new EntityWrapper<ExampaperEntity>();
        Map<String, Object> newMap = new HashMap<String, Object>();
        Map<String, Object> param = new HashMap<String, Object>();
		Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator();
		while (it.hasNext()) {
			Map.Entry<String, Object> entry = it.next();
			String key = entry.getKey();
			String newKey = entry.getKey();
			if (pre.endsWith(".")) {
				newMap.put(pre + newKey, entry.getValue());
			} else if (StringUtils.isEmpty(pre)) {
				newMap.put(newKey, entry.getValue());
			} else {
				newMap.put(pre + "." + newKey, entry.getValue());
			}
		}
		params.put("sort", "clicktime");
        params.put("order", "desc");
		PageUtils page = exampaperService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, exampaper), params), params));
        return R.ok().put("data", page);
    }









    /**
     * 组卷
     */
    @RequestMapping("/compose")
    public R compose(HttpServletRequest request,@RequestParam Long paperid, @RequestParam String papername, @RequestParam Integer radioNum,
        @RequestParam Integer multipleChoiceNum, @RequestParam Integer determineNum, @RequestParam Integer fillNum, @RequestParam Integer subjectivityNum){
        //如果已存在考试记录，不能进行重新组卷
        if(examrecordService.selectCount(new EntityWrapper<ExamrecordEntity>().eq("paperid", paperid))>0) {
            return R.error("已存在考试记录，无法重新组卷");
        }
        //组卷之前删除该试卷之前的所有题目
        examquestionService.deleteByMap(new MapUtils().put("paperid", paperid));
        List<ExamquestionbankEntity> questionList = new ArrayList<ExamquestionbankEntity>();
        //单选题
        if(radioNum>0) {
            Integer radioSize = examquestionbankService.selectCount(new EntityWrapper<ExamquestionbankEntity>().eq("type", 0));
            if(radioSize<radioNum) {
                return R.error("单选题库不足");
            } else {
                Wrapper<ExamquestionbankEntity> ew = new EntityWrapper<ExamquestionbankEntity>();
                ew.eq("type", 0).orderBy("RAND()").last("limit "+radioNum);
                List<ExamquestionbankEntity> radioList = examquestionbankService.selectList(ew);
                questionList.addAll(radioList);
            }
        }
        //多选题
        if(multipleChoiceNum>0) {
            Integer multipleChoiceSize = examquestionbankService.selectCount(new EntityWrapper<ExamquestionbankEntity>().eq("type", 1));
            if(multipleChoiceSize<multipleChoiceNum) {
                return R.error("多选题库不足");
            } else {
                Wrapper<ExamquestionbankEntity> ew = new EntityWrapper<ExamquestionbankEntity>();
                ew.eq("type", 1).orderBy("RAND()").last("limit "+multipleChoiceNum);
                List<ExamquestionbankEntity> multipleChoiceList = examquestionbankService.selectList(ew);
                questionList.addAll(multipleChoiceList);
            }
        }
        //判断题
        if(determineNum>0) {
            Integer determineSize = examquestionbankService.selectCount(new EntityWrapper<ExamquestionbankEntity>().eq("type", 2));
            if(determineSize<determineNum) {
                return R.error("判断题库不足");
            } else {
                Wrapper<ExamquestionbankEntity> ew = new EntityWrapper<ExamquestionbankEntity>();
                ew.eq("type", 2).orderBy("RAND()").last("limit "+determineNum);
                List<ExamquestionbankEntity> determineList = examquestionbankService.selectList(ew);
                questionList.addAll(determineList);
            }
        }
        //填空题
        if(fillNum>0) {
            Integer fillSize = examquestionbankService.selectCount(new EntityWrapper<ExamquestionbankEntity>().eq("type", 3));
            if(fillSize<fillNum) {
                return R.error("填空题库不足");
            } else {
                Wrapper<ExamquestionbankEntity> ew = new EntityWrapper<ExamquestionbankEntity>();
                ew.eq("type", 3).orderBy("RAND()").last("limit "+fillNum);
                List<ExamquestionbankEntity> fillList = examquestionbankService.selectList(ew);
                questionList.addAll(fillList);
            }
        }
        //主观题
        if(subjectivityNum>0) {
            Integer subjectivitySize = examquestionbankService.selectCount(new EntityWrapper<ExamquestionbankEntity>().eq("type", 4));
            if(subjectivitySize<subjectivityNum) {
                return R.error("主观题库不足");
            } else {
                Wrapper<ExamquestionbankEntity> ew = new EntityWrapper<ExamquestionbankEntity>();
                ew.eq("type", 4).orderBy("RAND()").last("limit "+subjectivityNum);
                List<ExamquestionbankEntity> subjectivityList = examquestionbankService.selectList(ew);
                questionList.addAll(subjectivityList);
            }
        }
        if(questionList!=null && questionList.size()>0) {
            long seq = 0;
            for(ExamquestionbankEntity q : questionList) {
                ExamquestionEntity examquestion = new ExamquestionEntity();
                examquestion.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue());
                examquestion.setPaperid(paperid);
                examquestion.setPapername(papername);
                examquestion.setQuestionname(q.getQuestionname());
                examquestion.setOptions(q.getOptions());
                examquestion.setScore(q.getScore());
                examquestion.setAnswer(q.getAnswer());
                examquestion.setAnalysis(q.getAnalysis());
                examquestion.setType(q.getType());
                examquestion.setSequence(++seq);
                examquestionService.insert(examquestion);
            }
        }
        return R.ok();
    }

}