讀萬卷書不如行萬里路，只學(xué)書上的理論是遠(yuǎn)遠(yuǎn)不夠的，只有在實戰(zhàn)中才能獲得能力的提升，本篇文章手把手帶你用java+vue+springboot+mysql+maven實現(xiàn)一個前端vue后臺java微服務(wù)的在線考試系統(tǒng),大家可以在過程中查缺補(bǔ)漏，提升水平

考試流程：

用戶前臺注冊成為學(xué)生
管理員后臺添加老師，系統(tǒng)將該用戶角色上升為老師
老師登錄，添加考試,添加題目，發(fā)布考試
考生登錄前臺參加考試，交卷
老師后臺批改試卷，查看成績
考試查看成績

練習(xí)流程：

考生登錄前臺參加練習(xí)，練習(xí)完自動判分，記錄錯題
考生查看成績，查看錯題

用戶登錄操作業(yè)務(wù)：

@RestController
@Api(tags = "User APIs")
@RequestMapping("/user")
public class UserController {
 
    @Autowired
    private UserService userService;
 
    @PostMapping("/register")
    @ApiOperation("注冊")
    ResultVO<User> register(@RequestBody RegisterDTO registerDTO) {
        ResultVO<User> resultVO;
        // 注冊信息的完善，還有唯一性校驗沒(用戶名、郵箱和手機(jī)號)已經(jīng)在user表中通過unique來設(shè)置了
        User user = userService.register(registerDTO);
        if (user != null) {
            // 注冊成功
            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("根據(jù)用戶名或郵箱登錄,登錄成功返回token")
    ResultVO<String> login(@RequestBody LoginQo loginQo) { // 這里不用手機(jī)號是因為手機(jī)號和用戶名難以進(jìn)行格式區(qū)分，而用戶名和
        // 用戶登錄
        ResultVO<String> resultVO;
        String token = userService.login(loginQo);
        if (token != null) {
            // 登錄成功
            resultVO = new ResultVO<>(ResultEnum.LOGIN_SUCCESS.getCode(), ResultEnum.LOGIN_SUCCESS.getMessage(), token);
        } else {
            // 登錄失敗
            resultVO = new ResultVO<>(ResultEnum.LOGIN_FAILED.getCode(), ResultEnum.LOGIN_FAILED.getMessage(), null);
        }
        return resultVO;
    }
 
    @GetMapping("/user-info")
    @ApiOperation("獲取用戶信息")
    ResultVO<UserVo> 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("獲取用戶的詳細(xì)信息，包括個人信息頁面和操作權(quán)限")
    ResultVO<UserInfoVo> getInfo(HttpServletRequest request) {
        System.out.println("進(jìn)入/user/info的獲取用戶信息的接口");
        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("測試接口")
    String test(HttpServletRequest request) {
        // 下面這兩個屬性都是登錄攔截器從token中解析地，當(dāng)用戶名不對或者token過期時是走不到接口內(nèi)的
        String userId = (String) request.getAttribute("user_id");
        String username = (String) request.getAttribute("username");
        System.out.println("用戶id：" + userId);
        System.out.println("用戶名：" + username);
        return "用戶id：" + userId + "\n用戶名：" + username;
    }
}

問題信息業(yè)務(wù)操作：

@RestController
@Api(tags = "Exam APIs")
@RequestMapping("/exam")
public class ExamController {
    @Autowired
    private ExamService examService;
 
    @GetMapping("/question/all")
    @ApiOperation("獲取所有問題的列表")
    ResultVO<List<QuestionVo>> getQuestionAll() {
        ResultVO<List<QuestionVo>> resultVO;
        try {
            List<QuestionVo> questionAll = examService.getQuestionAll();
            resultVO = new ResultVO<>(0, "獲取全部問題列表成功", questionAll);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取全部問題列表失敗", null);
        }
        return resultVO;
    }
 
    @PostMapping("/question/update")
    @ApiOperation("更新問題")
    ResultVO<QuestionVo> questionUpdate(@RequestBody QuestionVo questionVo) {
        // 完成問題的更新
        System.out.println(questionVo);
        try {
            QuestionVo questionVoResult = examService.updateQuestion(questionVo);
            return new ResultVO<>(0, "更新問題成功", questionVoResult);
        } catch (Exception e) {
            e.printStackTrace();
            return new ResultVO<>(-1, "更新問題失敗", null);
        }
    }
 
    @PostMapping("/question/create")
    @ApiOperation("創(chuàng)建問題")
    ResultVO<String> questionCreate(@RequestBody QuestionCreateSimplifyVo questionCreateSimplifyVo, HttpServletRequest request) {
        QuestionCreateVo questionCreateVo = new QuestionCreateVo();
        // 把能拷貝過來的屬性都拷貝過來
        BeanUtils.copyProperties(questionCreateSimplifyVo, questionCreateVo);
        // 設(shè)置創(chuàng)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, "問題創(chuàng)建成功", null);
        } catch (Exception e) {
            e.printStackTrace();
            return new ResultVO<>(-1, "創(chuàng)建問題失敗", null);
        }
    }
 
    @GetMapping("/question/selection")
    @ApiOperation("獲取問題分類的相關(guān)選項")
    ResultVO<QuestionSelectionVo> getSelections() {
        QuestionSelectionVo questionSelectionVo = examService.getSelections();
        if (questionSelectionVo != null) {
            return new ResultVO<>(0, "獲取問題分類選項成功", questionSelectionVo);
        } else {
            return new ResultVO<>(-1, "獲取問題分類選項失敗", null);
        }
    }
 
    @GetMapping("/question/detail/{id}")
    @ApiOperation("根據(jù)問題的id獲取問題的詳細(xì)信息")
    ResultVO<QuestionDetailVo> getQuestionDetail(@PathVariable String id) {
        //  根據(jù)問題id獲取問題的詳細(xì)信息
        System.out.println(id);
        ResultVO<QuestionDetailVo> resultVO;
        try {
            QuestionDetailVo questionDetailVo = examService.getQuestionDetail(id);
            resultVO = new ResultVO<>(0, "獲取問題詳情成功", questionDetailVo);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取問題詳情失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/all")
    @ApiOperation("獲取全部考試的列表")
    ResultVO<List<ExamVo>> getExamAll() {
        // 需要拼接前端需要的考試列表對象
        ResultVO<List<ExamVo>> resultVO;
        try {
            List<ExamVo> examVos = examService.getExamAll();
            resultVO = new ResultVO<>(0, "獲取全部考試的列表成功", examVos);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取全部考試的列表失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/question/type/list")
    @ApiOperation("獲取問題列表，按照單選、多選和判斷題分類返回")
    ResultVO<ExamQuestionTypeVo> getExamQuestionTypeList() {
        // 獲取問題的分類列表
        ResultVO<ExamQuestionTypeVo> resultVO;
        try {
            ExamQuestionTypeVo examQuestionTypeVo = examService.getExamQuestionType();
            resultVO = new ResultVO<>(0, "獲取問題列表成功", examQuestionTypeVo);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取問題列表失敗", null);
        }
        return resultVO;
    }
 
    @PostMapping("/create")
    @ApiOperation("創(chuàng)建考試")
    ResultVO<Exam> createExam(@RequestBody ExamCreateVo examCreateVo, HttpServletRequest request) {
        // 從前端傳參數(shù)過來，在這里完成考試的入庫
        ResultVO<Exam> resultVO;
        String userId = (String) request.getAttribute("user_id");
        try {
            Exam exam = examService.create(examCreateVo, userId);
            resultVO = new ResultVO<>(0, "創(chuàng)建考試成功", exam);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "創(chuàng)建考試失敗", null);
        }
        return resultVO;
    }
 
    @PostMapping("/update")
    @ApiOperation("更新考試")
    ResultVO<Exam> updateExam(@RequestBody ExamVo examVo, HttpServletRequest request) {
        // 從前端傳參數(shù)過來，在這里完成考試的入庫
        ResultVO<Exam> resultVO;
        String userId = (String) request.getAttribute("user_id");
        try {
            Exam exam = examService.update(examVo, userId);
            resultVO = new ResultVO<>(0, "更新考試成功", exam);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "更新考試失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/card/list")
    @ApiOperation("獲取考試列表，適配前端卡片列表")
    ResultVO<List<ExamCardVo>> getExamCardList() {
        // 獲取考試列表卡片
        ResultVO<List<ExamCardVo>> resultVO;
        try {
            List<ExamCardVo> examCardVoList = examService.getExamCardList();
            resultVO = new ResultVO<>(0, "獲取考試列表卡片成功", examCardVoList);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取考試列表卡片失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/detail/{id}")
    @ApiOperation("根據(jù)考試的id，獲取考試詳情")
    ResultVO<ExamDetailVo> getExamDetail(@PathVariable String id) {
        // 根據(jù)id獲取考試詳情
        ResultVO<ExamDetailVo> resultVO;
        try {
            ExamDetailVo examDetail = examService.getExamDetail(id);
            resultVO = new ResultVO<>(0, "獲取考試詳情成功", examDetail);
        } catch (Exception e) {
            resultVO = new ResultVO<>(-1, "獲取考試詳情失敗", null);
        }
        return resultVO;
    }
 
    @PostMapping("/finish/{examId}")
    @ApiOperation("根據(jù)用戶提交的答案對指定id的考試判分")
    ResultVO<ExamRecord> finishExam(@PathVariable String examId, @RequestBody HashMap<String, List<String>> answersMap, HttpServletRequest request) {
        ResultVO<ExamRecord> resultVO;
        try {
            // 攔截器里設(shè)置上的用戶id
            String userId = (String) request.getAttribute("user_id");
            // 下面根據(jù)用戶提交的信息進(jìn)行判分,返回用戶的得分情況
            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, "考卷提交失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/record/list")
    @ApiOperation("獲取當(dāng)前用戶的考試記錄")
    ResultVO<List<ExamRecordVo>> getExamRecordList(HttpServletRequest request) {
        ResultVO<List<ExamRecordVo>> resultVO;
        try {
            // 攔截器里設(shè)置上的用戶id
            String userId = (String) request.getAttribute("user_id");
            // 下面根據(jù)用戶賬號拿到他(她所有的考試信息)，注意要用VO封裝下
            List<ExamRecordVo> examRecordVoList = examService.getExamRecordList(userId);
            resultVO = new ResultVO<>(0, "獲取考試記錄成功", examRecordVoList);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取考試記錄失敗", null);
        }
        return resultVO;
    }
 
    @GetMapping("/record/detail/{recordId}")
    @ApiOperation("根據(jù)考試記錄id獲取考試記錄詳情")
    ResultVO<RecordDetailVo> getExamRecordDetail(@PathVariable String recordId) {
        ResultVO<RecordDetailVo> resultVO;
        try {
            RecordDetailVo recordDetailVo = examService.getRecordDetail(recordId);
            resultVO = new ResultVO<>(0, "獲取考試記錄詳情成功", recordDetailVo);
        } catch (Exception e) {
            e.printStackTrace();
            resultVO = new ResultVO<>(-1, "獲取考試記錄詳情失敗", null);
        }
        return resultVO;
    }
}

文件上傳業(yè)務(wù)控制器：

 
 
/***********************************************************
 * @note      : 文件上傳下載的接口,由于Swagger的問題導(dǎo)致在SwaggerUI
 *              里測試不成功，實際上前端是完全沒有問題的
 *  * 為了支持Ajax請求和響應(yīng)，最簡單的解決方案返回一個ResponseEntity。
 *  * 以下示例演示了上傳文件的三種可能方式：
 *  * 1. 單文件上傳 - `MultipartFile`
 *  * 2. 多文件上傳 - `MultipartFile []`
 *  * 3. 將文件上傳到模型 - `@ModelAttribute`
@RestController
@Api(tags = "Upload And Download APIs")
@RequestMapping("/file")
@Slf4j
public class UploadDownloadController {
 
//    @Autowired
//    AITestConfig aiTestConfig;
//
//    @PostMapping("/upload/single")
//    @ApiOperation("單文件上傳")
//    public String uploadFile(@RequestParam("file") MultipartFile uploadfile) {
//        return FileTransUtil.uploadFile(uploadfile, "/root/" + File.separator + uploadfile.getOriginalFilename());
//    }
 
    @ApiOperation("單文件上傳,支持同時傳入?yún)?shù)")
    @PostMapping("/api/upload/singleAndparas")
    public String uploadFileSingle(@RequestParam("dir") String dir, @RequestParam("file") MultipartFile uploadfile) {
        return FileTransUtil.uploadFile(uploadfile, dir);
    }
 
    @ApiOperation("單文件上傳,支持同時傳入?yún)?shù),Model")
    @PostMapping("/upload/single/model")
    public String singleUploadFileModel(@ModelAttribute("model") UploadModel2 model) {
        return FileTransUtil.uploadFile(model.getFile(), model.getDir());
    }
 
    @ApiOperation("多文件上傳,支持同時傳入?yún)?shù)")
    @PostMapping("upload/multiAndparas")
    public String uploadFileMulti(@RequestParam("dir") String dir, @RequestParam("files") MultipartFile[] uploadfiles) {
        return FileTransUtil.uploadFiles(uploadfiles, dir);
    }
 
    @ApiOperation("多文件上傳,支持同時傳入?yún)?shù)")
    @PostMapping(value = "/upload/multi/model")
    public String multiUploadFileModel(@ModelAttribute(("model")) UploadModel model) {
        return FileTransUtil.uploadFiles(model.getFiles(), model.getDir());
    }
 
    @ApiOperation("Get下載文件")
    @GetMapping(value = "/download/get")
    public ResponseEntity<InputStreamResource> downloadFileGet(@RequestParam String filePath) throws IOException {
        return FileTransUtil.downloadFile(filePath);
    }
 
    @ApiOperation("Post下載文件")
    @PostMapping(value = "/download/post")
    public ResponseEntity<InputStreamResource> downloadFilePost(@RequestBody DownloadQo downloadQo) throws IOException {
        return FileTransUtil.downloadFile(downloadQo.getPath());
    }
}

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