随机组卷

jeecg-boot/jeecg-boot-module/jeecg-module-learn/src/main/java/org/jeecg/modules/biz/controller/ExamBizController.java

@@ -1,5 +1,7 @@
 package org.jeecg.modules.biz.controller;
 
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
@@ -19,6 +21,7 @@ import org.jeecg.modules.gen.paper.service.IPaperService;
 import org.jeecg.modules.gen.paperquestion.entity.PaperQuestion;
 import org.jeecg.modules.gen.paperquestion.service.IPaperQuestionService;
 import org.jeecg.modules.gen.question.entity.Question;
+import org.jeecg.modules.gen.question.entity.QuestionRequest;
 import org.jeecg.modules.gen.question.service.IQuestionService;
 import org.jeecg.modules.gen.questionrepo.entity.QuestionRepo;
 import org.jeecg.modules.gen.questionrepo.service.IQuestionRepoService;
@@ -67,9 +70,8 @@ public class ExamBizController {
                     new LambdaQueryWrapper<QuestionRepo>().
                             eq(QuestionRepo::getRepoId, paper.getRepoId())
             );
-            questionIds = list.stream()
+            //筛选试卷
-                    .map(QuestionRepo::getQuestionId)
+            questionIds = random(list, paper.getRules());
-                    .collect(Collectors.toList());
         }else {
             //固定组卷
             // 获取试卷中的试题关联信息
@@ -194,6 +196,41 @@ public class ExamBizController {
         return examRecordService.update(updateWrapper) ? Result.OK() : Result.error("提交考试失败");
     }
 
+    //根据考试规则随机组卷
+    public List<String> random(List<QuestionRepo> list, String rules) {
+        JSONObject ruleJson = JSON.parseObject(rules);
+
+        // 根据规则筛选和随机抽取题目
+        Map<Integer, List<String>> typeQuestions = new HashMap<>();
+
+        // 先按题目类型分组
+        list.forEach(qr -> {
+            Question question = questionService.getById(qr.getQuestionId());
+            if (!typeQuestions.containsKey(question.getType())) {
+                typeQuestions.put(question.getType(), new ArrayList<>());
+            }
+            typeQuestions.get(question.getType()).add(question.getId());
+        });
+
+        // 根据规则随机抽取题目
+        List<String> questionIds = new ArrayList<>();
+        for (Integer type : typeQuestions.keySet()) {
+            int count = ruleJson.getInteger("type"+type + "_count"); // 例如：single_choice_count
+            List<String> typeQuestionIds = typeQuestions.get(type);
+
+            // 随机抽取指定数量的题目
+            if (typeQuestionIds.size() <= count) {
+                questionIds.addAll(typeQuestionIds);
+            } else {
+                // 打乱顺序后取前count个
+                Collections.shuffle(typeQuestionIds);
+                questionIds.addAll(typeQuestionIds.subList(0, count));
+            }
+        }
+        return questionIds;
+    }
+
+    //获取ip信息
     public String getClientIp(HttpServletRequest request) {
         String ip = request.getHeader("X-Forwarded-For");
 
@@ -219,6 +256,7 @@ public class ExamBizController {
         return ip;
     }
 
+    //获取设备信息
     public String getDeviceInfo(HttpServletRequest request) {
         // 获取User-Agent
         String userAgent = request.getHeader("User-Agent");
@@ -226,7 +264,6 @@ public class ExamBizController {
         String deviceInfo = parseDeviceInfo(userAgent);
         return deviceInfo;
     }
-
     private String parseDeviceInfo(String userAgent) {
         if (userAgent == null) {
             return "Unknown";