试卷题目顺序打乱

qirong

2023-06-26 77be36cc9077b09186e69440f3204f9e623c335a

 src/main/java/com/mindskip/xzs/service/impl/ExamPaperServiceImpl.java

@@ -1,17 +1,16 @@
package com.mindskip.xzs.service.impl;

import com.mindskip.xzs.configuration.spring.exception.QuestionException;
import com.mindskip.xzs.domain.*;
import com.mindskip.xzs.domain.TextContent;
import com.mindskip.xzs.domain.enums.ExamPaperTypeEnum;
import com.mindskip.xzs.domain.enums.QuestionTypeEnum;
import com.mindskip.xzs.domain.exam.ExamPaperQuestionItemObject;
import com.mindskip.xzs.domain.exam.ExamPaperTitleItemObject;
import com.mindskip.xzs.domain.other.KeyValue;
import com.mindskip.xzs.repository.ExamPaperMapper;
import com.mindskip.xzs.repository.QuestionMapper;
import com.mindskip.xzs.service.ExamPaperService;
import com.mindskip.xzs.service.QuestionService;
import com.mindskip.xzs.service.SubjectService;
import com.mindskip.xzs.service.TextContentService;
import com.mindskip.xzs.service.*;
import com.mindskip.xzs.service.enums.ActionEnum;
import com.mindskip.xzs.utility.DateTimeUtil;
import com.mindskip.xzs.utility.JsonUtil;
@@ -34,9 +33,7 @@
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@@ -49,15 +46,21 @@
    private final TextContentService textContentService;
    private final QuestionService questionService;
    private final SubjectService subjectService;
    private final ExamPaperDepartmentService examPaperDepartmentService;
    private final ExamPaperSubjectService examPaperSubjectService;
    private final QuestionSubjectService questionSubjectService;

    @Autowired
    public ExamPaperServiceImpl(ExamPaperMapper examPaperMapper, QuestionMapper questionMapper, TextContentService textContentService, QuestionService questionService, SubjectService subjectService) {
    public ExamPaperServiceImpl(ExamPaperMapper examPaperMapper, QuestionMapper questionMapper, TextContentService textContentService, QuestionService questionService, SubjectService subjectService, ExamPaperDepartmentService examPaperDepartmentService, ExamPaperSubjectService examPaperSubjectService, QuestionSubjectService questionSubjectService) {
        super(examPaperMapper);
        this.examPaperMapper = examPaperMapper;
        this.questionMapper = questionMapper;
        this.textContentService = textContentService;
        this.questionService = questionService;
        this.subjectService = subjectService;
        this.examPaperDepartmentService = examPaperDepartmentService;
        this.examPaperSubjectService = examPaperSubjectService;
        this.questionSubjectService = questionSubjectService;
    }


@@ -82,11 +85,24 @@

    @Override
    @Transactional
    public ExamPaper savePaperFromVM(ExamPaperEditRequestVM examPaperEditRequestVM, User user) {
    public ExamPaper savePaperFromVM(ExamPaperEditRequestVM examPaperEditRequestVM, User user) throws QuestionException {
        ActionEnum actionEnum = (examPaperEditRequestVM.getId() == null) ? ActionEnum.ADD : ActionEnum.UPDATE;
        Date now = new Date();
        List<ExamPaperTitleItemVM> titleItemsVM = examPaperEditRequestVM.getTitleItems();
        List<ExamPaperTitleItemObject> frameTextContentList = frameTextContentFromVM(titleItemsVM);

        List<ExamPaperTitleItemObject> frameTextContentList = new ArrayList<>();
        List<ExamPaperTitleItemVM> titleItemsVM = new ArrayList<>();
        //随机试卷
        if (examPaperEditRequestVM.getSubjectSource().size() != 0) {
//            Map<Integer, Integer> questionList = questionService.getAll().stream().collect(Collectors.toMap(Question::getId, Question::getScore));
            randomQuestion(examPaperEditRequestVM, frameTextContentList, titleItemsVM);
        }
        if (titleItemsVM.size() == 0) {
            titleItemsVM = examPaperEditRequestVM.getTitleItems();
        }
        if (frameTextContentList.size() == 0) {
            frameTextContentList = frameTextContentFromVM(titleItemsVM);
        }

        String frameTextContentStr = JsonUtil.toJsonStr(frameTextContentList);

        ExamPaper examPaper;
@@ -100,6 +116,7 @@
            examPaper.setDeleted(false);
            examPaperFromVM(examPaperEditRequestVM, examPaper, titleItemsVM);
            examPaperMapper.insertSelective(examPaper);

        } else {
            examPaper = examPaperMapper.selectByPrimaryKey(examPaperEditRequestVM.getId());
            TextContent frameTextContent = textContentService.selectById(examPaper.getFrameTextContentId());
@@ -108,7 +125,12 @@
            modelMapper.map(examPaperEditRequestVM, examPaper);
            examPaperFromVM(examPaperEditRequestVM, examPaper, titleItemsVM);
            examPaperMapper.updateByPrimaryKeySelective(examPaper);
            //批量修改
            examPaperDepartmentService.removeByExamPaperId(examPaper.getId());
            examPaperSubjectService.removeByExamPaperId(examPaper.getId());
        }
        addExamPaperDepartment(examPaperEditRequestVM, examPaper);
        addExamPaperSubject(examPaperEditRequestVM, examPaper);
        return examPaper;
    }

@@ -124,14 +146,18 @@
                        .map(q -> q.getId()))
                .collect(Collectors.toList());
        List<Question> questions = questionMapper.selectByIds(questionIds);
        Integer order = 0;
        Set<Integer> generatedNumbers = new HashSet<>();
        Random random = new Random();
        List<ExamPaperTitleItemVM> examPaperTitleItemVMS = examPaperTitleItemObjects.stream().map(t -> {
            ExamPaperTitleItemVM tTitleVM = modelMapper.map(t, ExamPaperTitleItemVM.class);
            List<QuestionEditRequestVM> questionItemsVM = t.getQuestionItems().stream().map(i -> {
                Question question = questions.stream().filter(q -> q.getId().equals(i.getId())).findFirst().get();
                QuestionEditRequestVM questionEditRequestVM = questionService.getQuestionEditRequestVM(question);
                questionEditRequestVM.setItemOrder(i.getItemOrder());
                return questionEditRequestVM;
            }).collect(Collectors.toList());
                        Question question = questions.stream().filter(q -> q.getId().equals(i.getId())).findFirst().get();
                        QuestionEditRequestVM questionEditRequestVM = questionService.getQuestionEditRequestVM(question);
                        questionEditRequestVM.setItemOrder(getRandomNumber(t.getQuestionItems().size() - 1, generatedNumbers, random));
                        return questionEditRequestVM;
                    }).sorted(Comparator.comparing(QuestionEditRequestVM::getItemOrder))
                    .collect(Collectors.toList());
            tTitleVM.setQuestionItems(questionItemsVM);
            return tTitleVM;
        }).collect(Collectors.toList());
@@ -141,6 +167,12 @@
            List<String> limitDateTime = Arrays.asList(DateTimeUtil.dateFormat(examPaper.getLimitStartTime()), DateTimeUtil.dateFormat(examPaper.getLimitEndTime()));
            vm.setLimitDateTime(limitDateTime);
        }

        //查询部门和课目
        vm.setSubjectId(examPaperSubjectService.getByExamPaperId(examPaper.getId())
                .stream().map(ExamPaperSubject::getSubjectId).toArray(Integer[]::new));
        vm.setDepartmentIds(examPaperDepartmentService.getByExamPaperId(examPaper.getId())
                .stream().map(ExamPaperDepartment::getDepartmentId).toArray(Integer[]::new));
        return vm;
    }

@@ -167,8 +199,18 @@
        }).collect(Collectors.toList());
    }

    @Override
    public Integer removeByIds(Integer[] ids) {
        return examPaperMapper.removeByIds(ids);
    }

    @Override
    public List<ExamPaper> gets(Integer[] ids) {
        return examPaperMapper.gets(ids);
    }

    private void examPaperFromVM(ExamPaperEditRequestVM examPaperEditRequestVM, ExamPaper examPaper, List<ExamPaperTitleItemVM> titleItemsVM) {
        Integer gradeLevel = subjectService.levelBySubjectId(examPaperEditRequestVM.getSubjectId());
//        Integer gradeLevel = subjectService.levelBySubjectId(examPaperEditRequestVM.getSubjectId());
        Integer questionCount = titleItemsVM.stream()
                .mapToInt(t -> t.getQuestionItems().size()).sum();
        Integer score = titleItemsVM.stream().
@@ -177,7 +219,7 @@
                ).sum();
        examPaper.setQuestionCount(questionCount);
        examPaper.setScore(score);
        examPaper.setGradeLevel(gradeLevel);
        examPaper.setGradeLevel(null);
        List<String> dateTimes = examPaperEditRequestVM.getLimitDateTime();
        if (ExamPaperTypeEnum.TimeLimit == ExamPaperTypeEnum.fromCode(examPaper.getPaperType())) {
            examPaper.setLimitStartTime(DateTimeUtil.parse(dateTimes.get(0), DateTimeUtil.STANDER_FORMAT));
@@ -200,4 +242,185 @@
            return titleItem;
        }).collect(Collectors.toList());
    }

    private void addExamPaperDepartment(ExamPaperEditRequestVM examPaperEditRequestVM, ExamPaper examPaper) {
        if(examPaperEditRequestVM.getDepartmentIds().length==0){
            return;
        }
        List<ExamPaperDepartment> list = Arrays.asList(examPaperEditRequestVM.getDepartmentIds()).stream().map(e -> {
            ExamPaperDepartment examPaperDepartment = new ExamPaperDepartment();
            examPaperDepartment.setExamPaperId(examPaper.getId());
            examPaperDepartment.setDepartmentId(e);
            examPaperDepartment.setDeleted("0");
            return examPaperDepartment;
        }).collect(Collectors.toList());
        examPaperDepartmentService.saves(list);
    }

    private void addExamPaperSubject(ExamPaperEditRequestVM examPaperEditRequestVM, ExamPaper examPaper) {
        List<ExamPaperSubject> subjectList = Arrays.asList(examPaperEditRequestVM.getSubjectId()).stream().map(e -> {
            ExamPaperSubject examPaperSubject = new ExamPaperSubject();
            examPaperSubject.setSubjectId(e);
            examPaperSubject.setExamPaperId(examPaper.getId());
            examPaperSubject.setDeleted("0");
            return examPaperSubject;
        }).collect(Collectors.toList());
        examPaperSubjectService.saves(subjectList);
    }

    /**
     * @param result
     * @param scoresMap
     * @param quantity
     * @param totalScore
     */
    public static void selectRandomScores(Map<Integer, Integer> result, Map<Integer, Integer> scoresMap, int quantity, int totalScore) throws QuestionException {
//        Map<String, Integer> selectedScoresMap = new HashMap<>();

        if (quantity <= 0 || totalScore <= 0 || scoresMap.isEmpty()) {
            return; // 返回空Map
        }

        List<Integer> keys = new ArrayList<>(scoresMap.keySet());
        List<Integer> values = scoresMap.values().stream().map(e -> e = e / 10).collect(Collectors.toList());

        Random random = new Random();
        int remainingQuantity = quantity;
        int remainingScore = totalScore;

        for (int i = 0; i < quantity - 1; i++) {
            if (i >= scoresMap.size()) {
                throw new QuestionException();
            }
            int index = random.nextInt(values.size());
            int score = values.get(index);

            if (score <= remainingScore) {
                result.put(keys.get(index), score);
                remainingQuantity--;
                remainingScore -= score;
                values.remove(index);
                keys.remove(index);
            }
        }

        if (!values.isEmpty()) {
            int index = random.nextInt(values.size());
            int score = values.get(index);
            result.put(keys.get(index), score); // 最后一个分数为剩余的分数
        }

    }

    /**
     * 随机试卷
     *
     * @param examPaperEditRequestVM 传参
     * @param frameTextContentList
     * @param titleItemsVM           title
     */
    private void randomQuestion(ExamPaperEditRequestVM examPaperEditRequestVM, List<ExamPaperTitleItemObject> frameTextContentList, List<ExamPaperTitleItemVM> titleItemsVM) throws QuestionException {
        Map<Integer, Integer> subjectSource = examPaperEditRequestVM.getSubjectSource();
        //总数量
        Integer sum = subjectSource.values().stream().mapToInt(Integer::intValue).sum();
        Integer count = 0;
        Integer mark = 0;

        ExamPaperTitleItemObject examPaperTitleItemObject = new ExamPaperTitleItemObject();
        examPaperTitleItemObject.setName(examPaperEditRequestVM.getTitleItems().get(0).getName());

        ExamPaperTitleItemVM examPaperTitleItemVM = new ExamPaperTitleItemVM();
        //titleItemsVM
        examPaperTitleItemVM.setName(examPaperEditRequestVM.getTitleItems().get(0).getName());

        List<ExamPaperQuestionItemObject> examPaperQuestionItemObjectList = new ArrayList<>();

        List<QuestionEditRequestVM> questionItems = new ArrayList<>();
        Integer order = 0;
        for (Integer key : subjectSource.keySet()) {    // key：数量
            //该标签对应的分数   多选：3 判断：3 单选：4
            Integer source = 80 * subjectSource.get(key) / sum - mark;
            // 多选和判断数量
            Integer multipleNumber = (subjectSource.get(key) + count) * 3 / 10;
            //多选和判断分数
            Integer multipleSource = source * 3 / 10;
            List<Integer> questions = questionSubjectService.getSubject(key)
                    .stream().map(QuestionSubject::getQuestionId).collect(Collectors.toList());
            List<Question> list = questionService.selectByIds(questions);

            Map<Integer, Integer> multiple = new HashMap<>();
            //多选
            Map<Integer, Integer> multipleMap = list.stream()
                    .filter(e -> e.getQuestionType().equals(QuestionTypeEnum.MultipleChoice.getCode()))
                    .collect(Collectors.toMap(Question::getId, Question::getScore));

            selectRandomScores(multiple, multipleMap, multipleNumber < multipleMap.size() ? multipleNumber : multipleMap.size(), multipleSource);


            //判断
            Map<Integer, Integer> judgmentMap = list.stream()
                    .filter(e -> e.getQuestionType().equals(QuestionTypeEnum.TrueFalse.getCode()))
                    .collect(Collectors.toMap(Question::getId, Question::getScore));
            selectRandomScores(multiple, judgmentMap, multipleNumber < judgmentMap.size() ? multipleNumber : judgmentMap.size(), multipleSource);

            //单选数量
            Integer radioNumber = subjectSource.get(key) - multiple.size();
            //单选分数
            Integer radioSource = source - multiple.values().stream().mapToInt(Integer::intValue).sum();
            //单选
            Map<Integer, Integer> radioMap = list.stream()
                    .filter(e -> e.getQuestionType().equals(QuestionTypeEnum.SingleChoice.getCode()))
                    .collect(Collectors.toMap(Question::getId, Question::getScore));
            selectRandomScores(multiple, radioMap, radioNumber < radioMap.size() ? radioNumber : radioMap.size(), radioSource);

//            titleItemsVM.add(examPaperTitleItemVM);
            for (Integer k : multiple.keySet()) {
                ExamPaperQuestionItemObject examPaperQuestionItemObject = new ExamPaperQuestionItemObject();
                examPaperQuestionItemObject.setId(k);
                examPaperQuestionItemObject.setItemOrder(order++);
                examPaperQuestionItemObjectList.add(examPaperQuestionItemObject);
                //titleItemsVM
                QuestionEditRequestVM questionEditRequestVM = new QuestionEditRequestVM();
                questionEditRequestVM.setScore(multiple.get(k).toString());
                questionItems.add(questionEditRequestVM);
            }

            examPaperTitleItemObject.setQuestionItems(examPaperQuestionItemObjectList);

            //titleItemsVM
            examPaperTitleItemVM.setQuestionItems(questionItems);
            //数量 匹配
            count = multiple.size() != subjectSource.get(key) ? subjectSource.get(key) - multiple.size() : 0;
            //分数匹配
            mark = source != multiple.values().stream().mapToInt(Integer::intValue).sum() ? multiple.values().stream().mapToInt(Integer::intValue).sum() - source : 0;

        }
        frameTextContentList.add(examPaperTitleItemObject);
        titleItemsVM.add(examPaperTitleItemVM);

        if (count != 0 || mark != 0) {
            throw new QuestionException();
        }

    }

    public Integer getRandomNumber(Integer a, Set<Integer> generatedNumbers, Random random) {
        if (a <= 0) {
            throw new IllegalArgumentException("a必须为正整数");
        }

        int range = a + 1;

        if (generatedNumbers.size() >= range) {
            generatedNumbers.clear();  // 清空已生成的数字集合
        }

        int randomNumber;
        do {
            randomNumber = random.nextInt(range);
        } while (generatedNumbers.contains(randomNumber));

        generatedNumbers.add(randomNumber);
        return randomNumber;
    }
}