From a252c5ebf19537991497c03cfef2b112d570ea97 Mon Sep 17 00:00:00 2001
From: luogw <3132758203@qq.com>
Date: Thu, 9 Apr 2026 10:27:02 +0800
Subject: [PATCH] =?UTF-8?q?bug=E4=BF=AE=E5=A4=8D?=
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---
 .../impl/AssemblePaperDomainServiceImpl.java  | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/main/java/com/project/exam/domain/service/impl/AssemblePaperDomainServiceImpl.java b/src/main/java/com/project/exam/domain/service/impl/AssemblePaperDomainServiceImpl.java
index 84ddd9e..c5c25d6 100644
--- a/src/main/java/com/project/exam/domain/service/impl/AssemblePaperDomainServiceImpl.java
+++ b/src/main/java/com/project/exam/domain/service/impl/AssemblePaperDomainServiceImpl.java
@@ -119,12 +119,24 @@ public class AssemblePaperDomainServiceImpl implements AssemblePaperDomainServic
         Set<Long> coveredKpPool = new HashSet<>();
         // 最终选定题目
         List<QuestionDTO> selectedQuestionList = new ArrayList<>();
-        // 分配种子：前N3个多选
-        List<TaskKnowledgePointDTO> mcSeeds = seedKpList.subList(0, taskDTO.getMultipleChoiceNum());
+        // 分配种子：前N3个多选(过滤单知识点簇)
+        List<TaskKnowledgePointDTO> mcSeeds = seedKpList.stream()
+                .filter(kp -> Objects.nonNull(kp.getClusterSize()) && kp.getClusterSize() > 1)
+                .limit(taskDTO.getMultipleChoiceNum())
+                .toList();
         //重新根据库存选取单选、判断
-        List<TaskKnowledgePointDTO> seedKpListBySupply = selectBySupply(taskDTO);
-        List<TaskKnowledgePointDTO> scSeeds = seedKpListBySupply.subList(0,taskDTO.getSingleChoiceNum());
-        List<TaskKnowledgePointDTO> tfSeeds = seedKpListBySupply.subList(taskDTO.getSingleChoiceNum() , taskDTO.getSingleChoiceNum() + taskDTO.getTrueFalseNum());
+        Set<Long> mcSeedIdSet = mcSeeds.stream().map(TaskKnowledgePointDTO::getId).collect(Collectors.toSet());
+        Set<Long> remainSeedIdSet = seedKpList.stream()
+                .map(TaskKnowledgePointDTO::getId)
+                .filter(id -> !mcSeedIdSet.contains(id))
+                .collect(Collectors.toSet());
+
+        List<TaskKnowledgePointDTO> remainSeedsBySupply = selectBySupply(taskDTO).stream()
+                .filter(kp -> remainSeedIdSet.contains(kp.getId()))
+                .toList();
+        List<TaskKnowledgePointDTO> scSeeds = remainSeedsBySupply.subList(0, Math.min(taskDTO.getSingleChoiceNum(), remainSeedsBySupply.size()));
+        List<TaskKnowledgePointDTO> tfCandidateSeeds = remainSeedsBySupply.subList(scSeeds.size(), remainSeedsBySupply.size());
+        List<TaskKnowledgePointDTO> tfSeeds = remainSeedsBySupply.subList(0 , Math.min(taskDTO.getTrueFalseNum(), tfCandidateSeeds.size()));
         // 选择单选题
         pickWithLock(scSeeds, QuestionTypeEnum.SINGLE_CHOICE , selectedQuestionList, coveredKpPool);
         // 选择判断题
@@ -185,8 +197,7 @@ public class AssemblePaperDomainServiceImpl implements AssemblePaperDomainServic
      */
     private List<TaskKnowledgePointDTO> selectWeightedSeedKpList(TaskDTO dto , int totalNum) {
         List<TaskKnowledgePointDTO> kpList = taskKnowledgePointBaseService.lambdaQuery()
-                .eq(TaskKnowledgePointEntity::getTaskId, dto.getId())
-                .gt(TaskKnowledgePointEntity::getClusterSize,1).list().stream()
+                .eq(TaskKnowledgePointEntity::getTaskId, dto.getId()).list().stream()
                 .map(entity -> entity.toDTO(TaskKnowledgePointDTO::new)).toList();
         // 按簇分组
         Map<Long, List<TaskKnowledgePointDTO>> clusterGroup = kpList.stream()