Java怎么实现在线考试云平台

这篇文章主要讲解了"Java怎么实现在线考试云平台"，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习"Java怎么实现在线考试云平台"吧！

考试流程：

• 用户前台注册成为学生

• 管理员后台添加老师，系统将该用户角色上升为老师

• 老师登录，添加考试,添加题目，发布考试

• 考生登录前台参加考试，交卷

• 老师后台批改试卷，查看成绩

• 考试查看成绩

练习流程：

• 考生登录前台参加练习，练习完自动判分，记录错题

• 考生查看成绩，查看错题

用户登录操作业务：

@RestController@Api(tags = "User APIs")@RequestMapping("/user")public class UserController {     @Autowired    private UserService userService;     @PostMapping("/register")    @ApiOperation("注册")    ResultVO register(@RequestBody RegisterDTO registerDTO) {        ResultVO resultVO;        // 注册信息的完善，还有唯一性校验没(用户名、邮箱和手机号)已经在user表中通过unique来设置了        User user = userService.register(registerDTO);        if (user != null) {            // 注册成功            resultVO = new ResultVO<>(ResultEnum.REGISTER_SUCCESS.getCode(), ResultEnum.REGISTER_SUCCESS.getMessage(), user);        } else {            resultVO = new ResultVO<>(ResultEnum.REGISTER_FAILED.getCode(), ResultEnum.REGISTER_FAILED.getMessage(), null);        }        return resultVO;    }     @PostMapping("/login")    @ApiOperation("根据用户名或邮箱登录,登录成功返回token")    ResultVO login(@RequestBody LoginQo loginQo) { // 这里不用手机号是因为手机号和用户名难以进行格式区分，而用户名和        // 用户登录        ResultVO resultVO;        String token = userService.login(loginQo);        if (token != null) {            // 登录成功            resultVO = new ResultVO<>(ResultEnum.LOGIN_SUCCESS.getCode(), ResultEnum.LOGIN_SUCCESS.getMessage(), token);        } else {            // 登录失败            resultVO = new ResultVO<>(ResultEnum.LOGIN_FAILED.getCode(), ResultEnum.LOGIN_FAILED.getMessage(), null);        }        return resultVO;    }     @GetMapping("/user-info")    @ApiOperation("获取用户信息")    ResultVO getUserInfo(HttpServletRequest request) {        String userId = (String) request.getAttribute("user_id");        UserVo userVo = userService.getUserInfo(userId);        return new ResultVO<>(ResultEnum.GET_INFO_SUCCESS.getCode(), ResultEnum.GET_INFO_SUCCESS.getMessage(), userVo);    }     @GetMapping("/info")    @ApiOperation("获取用户的详细信息，包括个人信息页面和操作权限")    ResultVO getInfo(HttpServletRequest request) {        System.out.println("进入/user/info的获取用户信息的接口");        String userId = (String) request.getAttribute("user_id");        UserInfoVo userInfoVo = userService.getInfo(userId);        return new ResultVO<>(ResultEnum.GET_INFO_SUCCESS.getCode(), ResultEnum.GET_INFO_SUCCESS.getMessage(), userInfoVo);    }     @GetMapping("/test")    @ApiOperation("测试接口")    String test(HttpServletRequest request) {        // 下面这两个属性都是登录拦截器从token中解析地，当用户名不对或者token过期时是走不到接口内的        String userId = (String) request.getAttribute("user_id");        String username = (String) request.getAttribute("username");        System.out.println("用户id：" + userId);        System.out.println("用户名：" + username);        return "用户id：" + userId + "\n用户名：" + username;    }}

问题信息业务操作：

@RestController@Api(tags = "Exam APIs")@RequestMapping("/exam")public class ExamController {    @Autowired    private ExamService examService;     @GetMapping("/question/all")    @ApiOperation("获取所有问题的列表")    ResultVO> getQuestionAll() {        ResultVO> resultVO;        try {            List questionAll = examService.getQuestionAll();            resultVO = new ResultVO<>(0, "获取全部问题列表成功", questionAll);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取全部问题列表失败", null);        }        return resultVO;    }     @PostMapping("/question/update")    @ApiOperation("更新问题")    ResultVO questionUpdate(@RequestBody QuestionVo questionVo) {        // 完成问题的更新        System.out.println(questionVo);        try {            QuestionVo questionVoResult = examService.updateQuestion(questionVo);            return new ResultVO<>(0, "更新问题成功", questionVoResult);        } catch (Exception e) {            e.printStackTrace();            return new ResultVO<>(-1, "更新问题失败", null);        }    }     @PostMapping("/question/create")    @ApiOperation("创建问题")    ResultVO questionCreate(@RequestBody QuestionCreateSimplifyVo questionCreateSimplifyVo, HttpServletRequest request) {        QuestionCreateVo questionCreateVo = new QuestionCreateVo();        // 把能拷贝过来的属性都拷贝过来        BeanUtils.copyProperties(questionCreateSimplifyVo, questionCreateVo);        // 设置创建者信息        String userId = (String) request.getAttribute("user_id");        questionCreateVo.setQuestionCreatorId(userId);        System.out.println(questionCreateVo);        try {            examService.questionCreate(questionCreateVo);            return new ResultVO<>(0, "问题创建成功", null);        } catch (Exception e) {            e.printStackTrace();            return new ResultVO<>(-1, "创建问题失败", null);        }    }     @GetMapping("/question/selection")    @ApiOperation("获取问题分类的相关选项")    ResultVO getSelections() {        QuestionSelectionVo questionSelectionVo = examService.getSelections();        if (questionSelectionVo != null) {            return new ResultVO<>(0, "获取问题分类选项成功", questionSelectionVo);        } else {            return new ResultVO<>(-1, "获取问题分类选项失败", null);        }    }     @GetMapping("/question/detail/{id}")    @ApiOperation("根据问题的id获取问题的详细信息")    ResultVO getQuestionDetail(@PathVariable String id) {        //  根据问题id获取问题的详细信息        System.out.println(id);        ResultVO resultVO;        try {            QuestionDetailVo questionDetailVo = examService.getQuestionDetail(id);            resultVO = new ResultVO<>(0, "获取问题详情成功", questionDetailVo);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取问题详情失败", null);        }        return resultVO;    }     @GetMapping("/all")    @ApiOperation("获取全部考试的列表")    ResultVO> getExamAll() {        // 需要拼接前端需要的考试列表对象        ResultVO> resultVO;        try {            List examVos = examService.getExamAll();            resultVO = new ResultVO<>(0, "获取全部考试的列表成功", examVos);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取全部考试的列表失败", null);        }        return resultVO;    }     @GetMapping("/question/type/list")    @ApiOperation("获取问题列表，按照单选、多选和判断题分类返回")    ResultVO getExamQuestionTypeList() {        // 获取问题的分类列表        ResultVO resultVO;        try {            ExamQuestionTypeVo examQuestionTypeVo = examService.getExamQuestionType();            resultVO = new ResultVO<>(0, "获取问题列表成功", examQuestionTypeVo);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取问题列表失败", null);        }        return resultVO;    }     @PostMapping("/create")    @ApiOperation("创建考试")    ResultVO createExam(@RequestBody ExamCreateVo examCreateVo, HttpServletRequest request) {        // 从前端传参数过来，在这里完成考试的入库        ResultVO resultVO;        String userId = (String) request.getAttribute("user_id");        try {            Exam exam = examService.create(examCreateVo, userId);            resultVO = new ResultVO<>(0, "创建考试成功", exam);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "创建考试失败", null);        }        return resultVO;    }     @PostMapping("/update")    @ApiOperation("更新考试")    ResultVO updateExam(@RequestBody ExamVo examVo, HttpServletRequest request) {        // 从前端传参数过来，在这里完成考试的入库        ResultVO resultVO;        String userId = (String) request.getAttribute("user_id");        try {            Exam exam = examService.update(examVo, userId);            resultVO = new ResultVO<>(0, "更新考试成功", exam);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "更新考试失败", null);        }        return resultVO;    }     @GetMapping("/card/list")    @ApiOperation("获取考试列表，适配前端卡片列表")    ResultVO> getExamCardList() {        // 获取考试列表卡片        ResultVO> resultVO;        try {            List examCardVoList = examService.getExamCardList();            resultVO = new ResultVO<>(0, "获取考试列表卡片成功", examCardVoList);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取考试列表卡片失败", null);        }        return resultVO;    }     @GetMapping("/detail/{id}")    @ApiOperation("根据考试的id，获取考试详情")    ResultVO getExamDetail(@PathVariable String id) {        // 根据id获取考试详情        ResultVO resultVO;        try {            ExamDetailVo examDetail = examService.getExamDetail(id);            resultVO = new ResultVO<>(0, "获取考试详情成功", examDetail);        } catch (Exception e) {            resultVO = new ResultVO<>(-1, "获取考试详情失败", null);        }        return resultVO;    }     @PostMapping("/finish/{examId}")    @ApiOperation("根据用户提交的答案对指定id的考试判分")    ResultVO finishExam(@PathVariable String examId, @RequestBody HashMap> answersMap, HttpServletRequest request) {        ResultVO resultVO;        try {            // 拦截器里设置上的用户id            String userId = (String) request.getAttribute("user_id");            // 下面根据用户提交的信息进行判分,返回用户的得分情况            ExamRecord examRecord = examService.judge(userId, examId, answersMap);            resultVO = new ResultVO<>(0, "考卷提交成功", examRecord);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "考卷提交失败", null);        }        return resultVO;    }     @GetMapping("/record/list")    @ApiOperation("获取当前用户的考试记录")    ResultVO> getExamRecordList(HttpServletRequest request) {        ResultVO> resultVO;        try {            // 拦截器里设置上的用户id            String userId = (String) request.getAttribute("user_id");            // 下面根据用户账号拿到他(她所有的考试信息)，注意要用VO封装下            List examRecordVoList = examService.getExamRecordList(userId);            resultVO = new ResultVO<>(0, "获取考试记录成功", examRecordVoList);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取考试记录失败", null);        }        return resultVO;    }     @GetMapping("/record/detail/{recordId}")    @ApiOperation("根据考试记录id获取考试记录详情")    ResultVO getExamRecordDetail(@PathVariable String recordId) {        ResultVO resultVO;        try {            RecordDetailVo recordDetailVo = examService.getRecordDetail(recordId);            resultVO = new ResultVO<>(0, "获取考试记录详情成功", recordDetailVo);        } catch (Exception e) {            e.printStackTrace();            resultVO = new ResultVO<>(-1, "获取考试记录详情失败", null);        }        return resultVO;    }}

文件上传业务控制器：

  /*********************************************************** * @note      : 文件上传下载的接口,由于Swagger的问题导致在SwaggerUI *              里测试不成功，实际上前端是完全没有问题的 *  * 为了支持Ajax请求和响应，最简单的解决方案返回一个ResponseEntity。 *  * 以下示例演示了上传文件的三种可能方式： *  * 1. 单文件上传 - `MultipartFile` *  * 2. 多文件上传 - `MultipartFile []` *  * 3. 将文件上传到模型 - `@ModelAttribute`@RestController@Api(tags = "Upload And Download APIs")@RequestMapping("/file")@Slf4jpublic class UploadDownloadController { //    @Autowired//    AITestConfig aiTestConfig;////    @PostMapping("/upload/single")//    @ApiOperation("单文件上传")//    public String uploadFile(@RequestParam("file") MultipartFile uploadfile) {//        return FileTransUtil.uploadFile(uploadfile, "/root/" + File.separator + uploadfile.getOriginalFilename());//    }     @ApiOperation("单文件上传,支持同时传入参数")    @PostMapping("/api/upload/singleAndparas")    public String uploadFileSingle(@RequestParam("dir") String dir, @RequestParam("file") MultipartFile uploadfile) {        return FileTransUtil.uploadFile(uploadfile, dir);    }     @ApiOperation("单文件上传,支持同时传入参数,Model")    @PostMapping("/upload/single/model")    public String singleUploadFileModel(@ModelAttribute("model") UploadModel2 model) {        return FileTransUtil.uploadFile(model.getFile(), model.getDir());    }     @ApiOperation("多文件上传,支持同时传入参数")    @PostMapping("upload/multiAndparas")    public String uploadFileMulti(@RequestParam("dir") String dir, @RequestParam("files") MultipartFile[] uploadfiles) {        return FileTransUtil.uploadFiles(uploadfiles, dir);    }     @ApiOperation("多文件上传,支持同时传入参数")    @PostMapping(value = "/upload/multi/model")    public String multiUploadFileModel(@ModelAttribute(("model")) UploadModel model) {        return FileTransUtil.uploadFiles(model.getFiles(), model.getDir());    }     @ApiOperation("Get下载文件")    @GetMapping(value = "/download/get")    public ResponseEntity downloadFileGet(@RequestParam String filePath) throws IOException {        return FileTransUtil.downloadFile(filePath);    }     @ApiOperation("Post下载文件")    @PostMapping(value = "/download/post")    public ResponseEntity downloadFilePost(@RequestBody DownloadQo downloadQo) throws IOException {        return FileTransUtil.downloadFile(downloadQo.getPath());    }}

感谢各位的阅读，以上就是"Java怎么实现在线考试云平台"的内容了，经过本文的学习后，相信大家对Java怎么实现在线考试云平台这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是，小编将为大家推送更多相关知识点的文章，欢迎关注！