AI魔法师：飞算JavaAI如何用代码变出智能考试系统？

// UserController.java
@RestController
@RequestMapping("/api/user")
public class UserController {
    @Autowired
    private UserService userService;

    // 用户登录（JWT令牌返回）
    @PostMapping("/login")
    public Result<LoginResponse> login(@RequestBody LoginRequest request) {
        return userService.login(request.getUsername(), request.getPassword());
    }

    // 用户注册
    @PostMapping("/register")
    public Result<String> register(@RequestBody RegisterRequest request) {
        return userService.register(request);
    }
}

// UserServiceImpl.java
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private JwtUtil jwtUtil;

    @Override
    public Result<LoginResponse> login(String username, String password) {
        User user = userMapper.selectByUsername(username);
        if (user == null || !BCrypt.checkpw(password, user.getPassword())) {
            return Result.error("用户名或密码错误");
        }
        String token = jwtUtil.generateToken(user.getId(), user.getRole());
        return Result.success(new LoginResponse(token, user.getRole()));
    }
}

// User.java (实体类)
@Data
@Entity
@Table(name = "users")
public class User {
    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String username;
    private String password; // BCrypt加密存储
    private String role; // STUDENT/TEACHER/ADMIN
}

<!-- Login.vue -->
<template>
  <el-form @submit.prevent="handleLogin">
    <el-input v-model="form.username" placeholder="用户名"/>
    <el-input v-model="form.password" type="password" placeholder="密码"/>
    <el-button @click="handleLogin">登录</el-button>
  </el-form>
</template>

<script setup>
import { ref } from 'vue';
import { loginApi } from '@/api/user';

const form = ref({ username: '', password: '' });
const handleLogin = async () => {
  const res = await loginApi(form.value);
  localStorage.setItem('token', res.data.token); // 存储JWT
};
</script>

// QuestionController.java
@RestController
@RequestMapping("/api/questions")
public class QuestionController {
    @Autowired
    private QuestionService questionService;

    // 批量导入题目（Excel）
    @PostMapping("/import")
    public Result<String> importQuestions(@RequestParam MultipartFile file) {
        return questionService.importFromExcel(file);
    }
}

// QuestionServiceImpl.java
@Service
public class QuestionServiceImpl implements QuestionService {
    @Autowired
    private QuestionMapper questionMapper;

    @Override
    public Result<String> importFromExcel(MultipartFile file) {
        List<Question> questions = EasyExcel.read(file.getInputStream())
                .head(QuestionExcelDTO.class)
                .sheet()
                .doReadSync()
                .stream()
                .map(dto -> convertToEntity(dto))
                .collect(Collectors.toList());
        questionMapper.batchInsert(questions);
        return Result.success("导入成功");
    }
}

// Question.java (实体类)
@Data
@Entity
@Table(name = "questions")
public class Question {
    @Id @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String content;
    private String type; // SINGLE_CHOICE/MULTIPLE_CHOICE等
    private String options; // JSON格式存储选项
    private String correctAnswer;
    private Integer difficultyLevel;
}

// ExamController.java
@RestController
@RequestMapping("/api/exams")
public class ExamController {
    @Autowired
    private ExamService examService;

    // 创建随机试卷
    @PostMapping("/random")
    public Result<Exam> createRandomExam(@RequestBody RandomExamRequest request) {
        return examService.generateRandomExam(request);
    }
}

// ExamServiceImpl.java
@Service
public class ExamServiceImpl implements ExamService {
    @Autowired
    private QuestionMapper questionMapper;
    @Autowired
    private ExamMapper examMapper;

    @Override
    public Result<Exam> generateRandomExam(RandomExamRequest request) {
        // 按知识点/难度随机抽题
        List<Question> questions = questionMapper.randomSelect(
            request.getSubject(), 
            request.getDifficulty(), 
            request.getQuestionCount()
        );
        Exam exam = new Exam();
        exam.setQuestions(questions);
        exam.setDuration(request.getDuration());
        examMapper.insert(exam);
        return Result.success(exam);
    }
}

<!-- ExamPage.vue -->
<template>
  <div>
    <h2>{{ exam.title }}</h2>
    <div v-for="q in exam.questions" :key="q.id">
      <p>{{ q.content }}</p>
      <!-- 单选题渲染 -->
      <el-radio-group v-if="q.type === 'SINGLE_CHOICE'" v-model="answers[q.id]">
        <el-radio v-for="opt in q.options" :key="opt" :label="opt"/>
      </el-radio-group>
    </div>
    <el-button @click="submitExam">提交</el-button>
  </div>
</template>

<script setup>
import { ref, onMounted } from 'vue';
import { getExamApi, submitExamApi } from '@/api/exam';

const exam = ref({});
const answers = ref({});

onMounted(async () => {
  exam.value = await getExamApi(route.params.id);
});

const submitExam = async () => {
  await submitExamApi(exam.value.id, answers.value);
};
</script>

// GradingServiceImpl.java
@Service
public class GradingServiceImpl implements GradingService {
    @Override
    public ExamResult autoGrade(ObjectiveQuestions answers, Exam exam) {
        int totalScore = 0;
        for (Question q : exam.getQuestions()) {
            if (q.getCorrectAnswer().equals(answers.get(q.getId()))) {
                totalScore += q.getScore();
            }
        }
        return new ExamResult(totalScore, exam.getTotalScore());
    }
}

// StatisticsController.java
@GetMapping("/class/{classId}")
public Result<ChartData> getClassStats(@PathVariable Long classId) {
    List<ScoreDTO> scores = examMapper.getClassScores(classId);
    // 构建成绩分布数据（用于ECharts柱状图）
    Map<String, Integer> distribution = scores.stream()
        .collect(Collectors.groupingBy(
            s -> s.getScore() >= 90 ? "优秀" : 
                 s.getScore() >= 60 ? "及格" : "不及格",
            Collectors.summingInt(s -> 1)
        ));
    return Result.success(new ChartData(distribution));
}

src/
├── main/
│   ├── java/
│   │   ├── controller/  # 接口层
│   │   ├── service/     # 业务逻辑
│   │   ├── dao/         # 数据访问
│   │   ├── entity/      # 数据库实体
│   │   └── config/      # 配置类
│   └── resources/
│       ├── mapper/      # MyBatis映射
│       └── application.yml