基于java的答题系统设计与实现+毕业论文

package com.example.service; import cn.hutool.core.collection.CollUtil; import cn.hutool.core.collection.CollectionUtil; import cn.hutool.core.util.RandomUtil; import cn.hutool.json.JSONObject; import com.example.dao.NxQuestionInfoDao; import com.example.dao.NxTestpaperInfoDao; import com.example.entity.NxTestpaperInfo; import com.example.exception.CustomException; import com.example.vo.NxQuestionInfoVo; import com.example.vo.NxTestpaperInfoVo; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Service; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; @Service public class NxTestpaperInfoService { @Resource private NxQuestionInfoDao nxQuestionInfoDao; @Resource private NxTestpaperInfoDao nxTestpaperInfoDao; public NxTestpaperInfo add(NxTestpaperInfo nxTestpaperInfo) { nxTestpaperInfoDao.insertSelective(nxTestpaperInfo); return nxTestpaperInfo; } /** * 生成试卷 * * @param nxTestpaperInfoVo * @return */ public NxTestpaperInfo generatePaper(NxTestpaperInfoVo nxTestpaperInfoVo) { // 试卷的type String type = nxTestpaperInfoVo.getType(); List<NxQuestionInfoVo> finalSelectQuestions = CollUtil.newArrayList(); if (nxTestpaperInfoVo.getSelectQuestion() != null) { List<NxQuestionInfoVo> selectQuestions = nxQuestionInfoDao.findByQuestionType("单选题", type); if (nxTestpaperInfoVo.getSelectQuestion() <= 0) { throw new CustomException("-1", "单选题设置需大于0"); } if (nxTestpaperInfoVo.getSelectQuestion() > selectQuestions.size()) { throw new CustomException("-1", "单选题库数量不足"); } // 选择题题目集合 List<Integer> selectIndexList = getIndexList(selectQuestions.size(), nxTestpaperInfoVo.getSelectQuestion()); selectIndexList.forEach(i -> finalSelectQuestions.add(selectQuestions.get(i))); } List<NxQuestionInfoVo> finalJudgeQuestions = CollUtil.newArrayList(); if (nxTestpaperInfoVo.getJudgeQuestion() != null) { List<NxQuestionInfoVo> judgeQuestions = nxQuestionInfoDao.findByQuestionType("判断题", type); if (nxTestpaperInfoVo.getJudgeQuestion() <= 0) { throw new CustomException("-1", "判断题设置需大于0"); } if (nxTestpaperInfoVo.getJudgeQuestion() > judgeQuestions.size()) { throw new CustomException("-1", "判断题库数量不足"); } // 判断题题目集合 List<Integer> judgeIndexList = getIndexList(judgeQuestions.size(), nxTestpaperInfoVo.getJudgeQuestion()); judgeIndexList.forEach(i -> finalJudgeQuestions.add(judgeQuestions.get(i))); } List<NxQuestionInfoVo> finalAnswerQuestions = CollUtil.newArrayList(); if (nxTestpaperInfoVo.getAnswerQuestion() != null) { List<NxQuestionInfoVo> answerQuestions = nxQuestionInfoDao.findByQuestionType("简答题", type); if (nxTestpaperInfoVo.getAnswerQuestion() <= 0) { throw new CustomException("-1", "简答题设置需大于0"); } if (nxTestpaperInfoVo.getAnswerQuestion() > answerQuestions.size()) { throw new CustomException("-1", "简答题库数量不足"); } // 简答题题题目集合 List<Integer> answerIndexList = getIndexList(answerQuestions.size(), nxTestpaperInfoVo.getAnswerQuestion()); answerIndexList.forEach(i -> finalAnswerQuestions.add(answerQuestions.get(i))); } // 多选题 List<NxQuestionInfoVo> finalMulSelectQuestions = CollUtil.newArrayList(); if (nxTestpaperInfoVo.getMulSelectQuestion() != null) { List<NxQuestionInfoVo> mulSelectQuestions = nxQuestionInfoDao.findByQuestionType("多选题", type); if (nxTestpaperInfoVo.getMulSelectQuestion() <= 0) { throw new CustomException("-1", "多选题设置需大于0"); } if (nxTestpaperInfoVo.getMulSelectQuestion() > mulSelectQuestions.size()) { throw new CustomException("-1", "多选题库数量不足"); } // 多选题题题目集合 List<Integer> answerIndexList = getIndexList(mulSelectQuestions.size(), nxTestpaperInfoVo.getMulSelectQuestion()); answerIndexList.forEach(i -> finalMulSelectQuestions.add(mulSelectQuestions.get(i))); } // 填空题 List<NxQuestionInfoVo> finalFillQuestions = CollUtil.newArrayList(); if (nxTestpaperInfoVo.getFillQuestion() != null) { List<NxQuestionInfoVo> fillQuestions = nxQuestionInfoDao.findByQuestionType("填空题", type); if (nxTestpaperInfoVo.getFillQuestion() <= 0) { throw new CustomException("-1", "填空题设置需大于0"); } if (nxTestpaperInfoVo.getFillQuestion() > fillQuestions.size()) { throw new CustomException("-1", "填空题库数量不足"); } // 填空题题题目集合 List<Integer> answerIndexList = getIndexList(fillQuestions.size(), nxTestpaperInfoVo.getFillQuestion()); answerIndexList.forEach(i -> finalFillQuestions.add(fillQuestions.get(i))); } // 校验，不能全部为空 if (CollectionUtil.isEmpty(finalSelectQuestions) && CollectionUtil.isEmpty(finalJudgeQuestions) && CollectionUtil.isEmpty(finalAnswerQuestions) && CollectionUtil.isEmpty(finalMulSelectQuestions) && CollectionUtil.isEmpty(finalFillQuestions)) { throw new CustomException("-1", "请至少确定一种题型数量"); } // 生成试卷html Map<String, String> map = getPaperHtml(nxTestpaperInfoVo, finalSelectQuestions, finalJudgeQuestions, finalAnswerQuestions, finalMulSelectQuestions, finalFillQuestions); nxTestpaperInfoVo.setContent(map.get("page")); nxTestpaperInfoVo.setAnswer(map.get("answer")); //插入表 add(nxTestpaperInfoVo); return nxTestpaperInfoVo; } /** * 生成试卷html * * @param selects * @param judges * @param answers * @return */ private Map<String, String> getPaperHtml(NxTestpaperInfoVo nxTestpaperInfoVo, List<NxQuestionInfoVo> selects, List<NxQuestionInfoVo> judges, List<NxQuestionInfoVo> answers, List<NxQuestionInfoVo> mulSelect, List<NxQuestionInfoVo> fill) { Map<String, String> map = new HashMap<>(); StringBuilder pageBuilder = new StringBuilder(); JSONObject answerBuilder = new JSONObject(); pageBuilder.append("<div class=\"panel-heading\">\n") .append("<span style=\"font-size: 14px\">试卷名称：</span><span style=\"color: orangered\">" + nxTestpaperInfoVo.getName() + "</span>\n") .append("<span style=\"font-size: 14px; margin-left: 20px\">试卷编号：</span><span style=\"color: orangered\">" + nxTestpaperInfoVo.getCode() + "</span>\n") .append("<span style=\"font-size: 14px; margin-left: 20px\">考试剩余时间：</span><span id=\"time\" style=\"color: orangered\">" + nxTestpaperInfoVo.getTime() + "分</span>\n") .append("</div>\n") .append("<div class=\"panel-body\">\n") .append("<div style=\"border: 1px solid #1E9FFF;\">