spring boot实现自动输出word文档功能
本文用到Apache POI组件
组件依赖在pom.xml文件中添加
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<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version> 4.1 . 0 </version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version> 4.1 . 0 </version> </dependency> |
首先创建相关的实体类、编写需要用到的sql查询。
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import lombok.Data; // 选择题实体 @Data public class MultiQuestion { private Integer questionId; private String subject; private String section; private String answerA; private String answerB; private String answerC; private String answerD; private String question; private String level; private String rightAnswer; private String analysis; //题目解析 private Integer score; } |
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import lombok.Data; //填空题实体类 @Data public class FillQuestion { private Integer questionId; private String subject; private String question; private String answer; private Integer score; private String level; private String section; private String analysis; //题目解析 } |
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import lombok.Data; //判断题实体类 @Data public class JudgeQuestion { private Integer questionId; private String subject; private String question; private String answer; private String level; private String section; private Integer score; private String analysis; //题目解析 } |
创建好要用到的实体类之后,利用mybatis写sql查询,可以分为两种:1、配置mapper.xml文件路径,在xml文件中编写sql语句。2、直接使用注解。本文使用方法为第二种。
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@Mapper public interface MultiQuestionMapper { /** * select * from multiquestions where questionId in ( * select questionId from papermanage where questionType = 1 and paperId = 1001 * ) */ @Select ( "select * from multi_question where questionId in (select questionId from paper_manage where questionType = 1 and paperId = #{paperId})" ) List<MultiQuestion> findByIdAndType(Integer PaperId); @Select ( "select * from multi_question" ) IPage<MultiQuestion> findAll(Page page); /** * 查询最后一条记录的questionId * @return MultiQuestion */ @Select ( "select questionId from multi_question order by questionId desc limit 1" ) MultiQuestion findOnlyQuestionId(); @Options (useGeneratedKeys = true ,keyProperty = "questionId" ) @Insert ( "insert into multi_question(subject,question,answerA,answerB,answerC,answerD,rightAnswer,analysis,section,level) " + "values(#{subject},#{question},#{answerA},#{answerB},#{answerC},#{answerD},#{rightAnswer},#{analysis},#{section},#{level})" ) int add(MultiQuestion multiQuestion); @Select ( "select questionId from multi_question where subject =#{subject} order by rand() desc limit #{pageNo}" ) List<Integer> findBySubject(String subject,Integer pageNo); } |
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//填空题 @Mapper public interface FillQuestionMapper { @Select ( "select * from fill_question where questionId in (select questionId from paper_manage where questionType = 2 and paperId = #{paperId})" ) List<FillQuestion> findByIdAndType(Integer paperId); @Select ( "select * from fill_question" ) IPage<FillQuestion> findAll(Page page); /** * 查询最后一条questionId * @return FillQuestion */ @Select ( "select questionId from fill_question order by questionId desc limit 1" ) FillQuestion findOnlyQuestionId(); @Options (useGeneratedKeys = true ,keyProperty = "questionId" ) @Insert ( "insert into fill_question(subject,question,answer,analysis,level,section) values " + "(#{subject,},#{question},#{answer},#{analysis},#{level},#{section})" ) int add(FillQuestion fillQuestion); @Select ( "select questionId from fill_question where subject = #{subject} order by rand() desc limit #{pageNo}" ) List<Integer> findBySubject(String subject,Integer pageNo); } |
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//判断题 @Mapper public interface JudgeQuestionMapper { @Select ( "select * from judge_question where questionId in (select questionId from paper_manage where questionType = 3 and paperId = #{paperId})" ) List<JudgeQuestion> findByIdAndType(Integer paperId); @Select ( "select * from judge_question" ) IPage<JudgeQuestion> findAll(Page page); /** * 查询最后一条记录的questionId * @return JudgeQuestion */ @Select ( "select questionId from judge_question order by questionId desc limit 1" ) JudgeQuestion findOnlyQuestionId(); @Insert ( "insert into judge_question(subject,question,answer,analysis,level,section) values " + "(#{subject},#{question},#{answer},#{analysis},#{level},#{section})" ) int add(JudgeQuestion judgeQuestion); @Select ( "select questionId from judge_question where subject=#{subject} order by rand() desc limit #{pageNo}" ) List<Integer> findBySubject(String subject,Integer pageNo); } |
写好mapper底层查询后,需要创建service及其实现类来调用mapper底层。例如:
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public interface JudgeQuestionService { List<JudgeQuestion> findByIdAndType(Integer paperId); IPage<JudgeQuestion> findAll(Page<JudgeQuestion> page); JudgeQuestion findOnlyQuestionId(); int add(JudgeQuestion judgeQuestion); List<Integer> findBySubject(String subject,Integer pageNo); } |
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@Service public class JudgeQuestionServiceImpl implements JudgeQuestionService { @Autowired private JudgeQuestionMapper judgeQuestionMapper; @Override public List<JudgeQuestion> findByIdAndType(Integer paperId) { return judgeQuestionMapper.findByIdAndType(paperId); } @Override public IPage<JudgeQuestion> findAll(Page<JudgeQuestion> page) { return judgeQuestionMapper.findAll(page); } @Override public JudgeQuestion findOnlyQuestionId() { return judgeQuestionMapper.findOnlyQuestionId(); } @Override public int add(JudgeQuestion judgeQuestion) { return judgeQuestionMapper.add(judgeQuestion); } @Override public List<Integer> findBySubject(String subject, Integer pageNo) { return judgeQuestionMapper.findBySubject(subject,pageNo); } } |
最后将输出文件方法写在controller层:
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@RequestMapping ( "/exam/exportWord" ) public void exportWord( int examCode, HttpServletResponse response) throws FileNotFoundException{ //由于题目应于考试信息对应 所以需要先查出考试信息后根据pageId来查找对应的组卷信息 ExamManage res = examManageService.findById(examCode); int paperId = res.getPaperId(); List<MultiQuestion> multiQuestionRes = multiQuestionService.findByIdAndType(paperId); //选择题题库 1 List<FillQuestion> fillQuestionsRes = fillQuestionService.findByIdAndType(paperId); //填空题题库 2 List<JudgeQuestion> judgeQuestionRes = judgeQuestionService.findByIdAndType(paperId); //响应到客户端 XWPFDocument document= new XWPFDocument(); //分页 XWPFParagraph firstParagraph = document.createParagraph(); //格式化段落 firstParagraph.getStyleID(); XWPFRun run = firstParagraph.createRun(); int i = 1 ; run.setText( "一、选择题" + "\r\n" ); //换行 for (MultiQuestion multiQuestion : multiQuestionRes) { String str = multiQuestion.getQuestion(); String str1 = multiQuestion.getAnswerA(); String str2 = multiQuestion.getAnswerB(); String str3 = multiQuestion.getAnswerC(); String str4 = multiQuestion.getAnswerD(); run.setText(i + ". " + str + "\r\n" ); run.setText( "A. " + str1 + "\r\n" ); run.setText( "B. " + str2 + "\r\n" ); run.setText( "C. " + str3 + "\r\n" ); run.setText( "D. " + str4 + "\r\n" ); i++; } run.setText( "二、填空题" + "\r\n" ); for (FillQuestion fillQuestion : fillQuestionsRes) { String str = fillQuestion.getQuestion(); run.setText(i + ". " + str + "\r\n" ); i++; } run.setText( "三、判断题" + "\r\n" ); for (JudgeQuestion judgeQuestion : judgeQuestionRes) { String str = judgeQuestion.getQuestion(); run.setText(i + ". " + str + "\r\n" ); i++; } document.createTOC(); try { //设置相应头 this .setResponseHeader(response, res.getSource() + "试卷.doc" ); //输出流 OutputStream os = response.getOutputStream(); document.write(os); os.flush(); os.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 发送响应流方法 */ private void setResponseHeader(HttpServletResponse response, String fileName) { try { try { fileName = URLEncoder.encode(fileName, "UTF-8" ); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } response.setContentType( "application/octet-stream;charset=UTF-8" ); response.setHeader( "Content-Disposition" , "attachment;filename=" + fileName); //遵守缓存规定 response.addHeader( "Pargam" , "no-cache" ); response.addHeader( "Cache-Control" , "no-cache" ); } catch (Exception ex) { ex.printStackTrace(); } } |
效果:
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原文链接:https://blog.csdn.net/qq_42793254/article/details/115859007