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
<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。
import lombok.Data;// 选择题实体@Datapublic 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; }
import lombok.Data;//填空题实体类@Datapublic 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 }
import lombok.Data;//判断题实体类@Datapublic 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。
@Mapperpublic 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);}
//填空题@Mapperpublic 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);}
//判断题@Mapperpublic 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：
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);}
@Servicepublic 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：
@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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