2025年4月19日15:02:59

src/main/java/com/zhangmeng/online/exam/controller/ExamController.java

@@ -5,10 +5,8 @@ import com.zhangmeng.online.exam.dao.ExamDao;
 import com.zhangmeng.online.exam.dao.PaperDao;
 import com.zhangmeng.online.exam.dao.UserDao;
 import com.zhangmeng.online.exam.dto.Result;
-import com.zhangmeng.online.exam.entity.Exam;
-import com.zhangmeng.online.exam.entity.Paper;
-import com.zhangmeng.online.exam.entity.Role;
-import com.zhangmeng.online.exam.entity.User;
+import com.zhangmeng.online.exam.entity.*;
+import com.zhangmeng.online.exam.service.ExamService;
 import com.zhangmeng.online.exam.utils.UserUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
@@ -48,6 +46,9 @@ public class ExamController {
     @Autowired
     private UserDao userDao;
 
+    @Autowired
+    private ExamService examService;
+
     @RequestMapping("/user/list")
     public Result userList(String paperId, Integer pageNum, Integer pageSize) {
 
@@ -229,4 +230,32 @@ public class ExamController {
         return all.get(0);
     }
 
+
+    @RequestMapping("/saveAnswer")
+    public Result saveAnswer(@RequestParam @RequestBody Map<String, Object> params) {
+
+        String jsonData = params.get("json_data").toString();
+
+        try {
+            List<Map> maps = JSONArray.parseArray(jsonData, Map.class);
+            // 如果解析成功，继续处理 maps
+            for (Map map : maps) {
+                this.examService.saveAnswer(map);
+            }
+
+        } catch (com.alibaba.fastjson2.JSONException e) {
+            // 处理 jsonData 格式不正确的情况
+            return Result.error("jsonData 格式不正确，请提供有效的 JSON 数据。");
+        } catch (Exception e) {
+            // 处理其他未知错误的情况
+            return Result.error("发生未知错误，请联系系统管理员。");
+        }
+
+
+
+        return Result.success(null);
+    }
+
+
+
 }

src/main/java/com/zhangmeng/online/exam/dao/ExamAnswerDao.java

@@ -0,0 +1,13 @@
+package com.zhangmeng.online.exam.dao;
+
+import com.zhangmeng.online.exam.entity.ExamAnswer;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+
+/**
+ * @author zm
+ * @date 2025/4/19 12:19
+ * @version: 1.0
+ */
+public interface ExamAnswerDao extends JpaRepository<ExamAnswer, Long>, JpaSpecificationExecutor<ExamAnswer> {
+}

src/main/java/com/zhangmeng/online/exam/entity/ExamAnswer.java

@@ -25,6 +25,9 @@ public class ExamAnswer extends BaseEntity<Long> {
     @ManyToOne
     private Exam exam;
 
+    @ManyToOne
+    private Paper paper;//试卷
+
     @ManyToOne
     private Question question;//问题
 

src/main/java/com/zhangmeng/online/exam/service/ExamService.java

@@ -0,0 +1,12 @@
+package com.zhangmeng.online.exam.service;
+
+import java.util.Map;
+
+/**
+ * @author zm
+ * @date 2025/4/19 12:13
+ * @version: 1.0
+ */
+public interface ExamService {
+    void saveAnswer(Map<String, Object> params);
+}

src/main/java/com/zhangmeng/online/exam/service/impl/ExamServiceImpl.java

@@ -0,0 +1,92 @@
+package com.zhangmeng.online.exam.service.impl;
+
+import com.zhangmeng.online.exam.dao.*;
+import com.zhangmeng.online.exam.entity.*;
+import com.zhangmeng.online.exam.service.ExamService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.jpa.domain.Specification;
+import org.springframework.stereotype.Service;
+
+import javax.persistence.criteria.Join;
+import javax.persistence.criteria.Predicate;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author zm
+ * @date 2025/4/19 12:13
+ * @version: 1.0
+ */
+@Service
+public class ExamServiceImpl implements ExamService {
+
+    @Autowired
+    private ExamDao examDao;
+
+    @Autowired
+    private QuestionDao questionDao;
+
+    @Autowired
+    private QuestionOptionDao questionOptionDao;
+
+    @Autowired
+    private PaperDao paperDao;
+
+    @Autowired
+    private ExamAnswerDao examAnswerDao;
+
+
+    @Override
+    public void saveAnswer(Map<String, Object> map) {
+        String option_id =  map.get("option_id") == null? "" : (String) map.get("option_id");
+        String question_id =  map.get("question_id") == null? "" : (String) map.get("question_id");
+        String paper_id = map.get("paper_id") == null? "" : String.valueOf( map.get("paper_id").toString());
+        String answer_content = map.get("answer_content") == null? "" : (String) map.get("answer_content");
+
+        Paper paper = this.paperDao.getById(Long.parseLong(paper_id));
+        Question question = this.questionDao.getById(Long.parseLong(question_id));
+        QuestionOption questionOption = this.questionOptionDao.getById(Long.parseLong(option_id));
+
+        ExamAnswer examAnswer = null;
+
+        Specification<ExamAnswer> specification = (root, criteriaQuery, criteriaBuilder) -> {
+
+            List<Predicate> predicates = new ArrayList<>();
+
+            predicates.add(criteriaBuilder.equal(root.get("paper").get("id"), paper.getId()));
+            predicates.add(criteriaBuilder.equal(root.get("question").get("id"), question.getId()));
+
+            List<Long> questionOptionIds = new ArrayList<>();
+            questionOptionIds.add(questionOption.getId());// 假设这是包含所有需要查询的 questionOption 的 id 的集合
+
+            Join<ExamAnswer, QuestionOption> join = root.join("questionOptions");
+            predicates.add(join.get("id").in(questionOptionIds));
+
+            return criteriaBuilder.and(predicates.toArray(new Predicate[0]));
+
+        };
+
+        List<ExamAnswer> all = this.examAnswerDao.findAll(specification);
+        if (!all.isEmpty()) {
+            examAnswer = all.get(0);
+        } else {
+            examAnswer = new ExamAnswer();
+        }
+
+        examAnswer.setPaper(paper);
+        examAnswer.setQuestion(question);
+
+        switch (question.getType()) {
+            case SINGLE_CHOICE, JUDGMENT -> examAnswer.setQuestionOptions(List.of(questionOption));
+            case MULTIPLE_CHOICE -> {
+
+            }
+            case SHORT_ANSWER -> examAnswer.setAnswer(answer_content);
+        }
+
+        examAnswerDao.save(examAnswer);
+
+    }
+}