spring boot實現(xiàn)自動輸出word文檔功能的實例代碼
spring boot實現(xiàn)自動輸出word文檔功能
本文用到Apache POI組件
組件依賴在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>
首先創(chuàng)建相關(guān)的實體類、編寫需要用到的sql查詢。
import lombok.Data; // 選擇題實體 @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; //題目解析 private Integer score; }
import lombok.Data; //填空題實體類 @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; //題目解析 }
import lombok.Data; //判斷題實體類 @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; //題目解析 }
創(chuàng)建好要用到的實體類之后,利用mybatis寫sql查詢,可以分為兩種:1、配置mapper.xml文件路徑,在xml文件中編寫sql語句。2、直接使用注解。本文使用方法為第二種。
@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); /** * 查詢最后一條記錄的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); }
//填空題 @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); /** * 查詢最后一條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); }
//判斷題 @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); /** * 查詢最后一條記錄的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); }
寫好mapper底層查詢后,需要創(chuàng)建service及其實現(xiàn)類來調(diào)用mapper底層。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); }
@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); } }
最后將輸出文件方法寫在controller層:
@RequestMapping("/exam/exportWord") public void exportWord(int examCode, HttpServletResponse response) throws FileNotFoundException{ //由于題目應(yīng)于考試信息對應(yīng) 所以需要先查出考試信息后根據(jù)pageId來查找對應(yīng)的組卷信息 ExamManage res = examManageService.findById(examCode); int paperId = res.getPaperId(); List<MultiQuestion> multiQuestionRes = multiQuestionService.findByIdAndType(paperId); //選擇題題庫 1 List<FillQuestion> fillQuestionsRes = fillQuestionService.findByIdAndType(paperId); //填空題題庫 2 List<JudgeQuestion> judgeQuestionRes = judgeQuestionService.findByIdAndType(paperId); //響應(yīng)到客戶端 XWPFDocument document= new XWPFDocument(); //分頁 XWPFParagraph firstParagraph = document.createParagraph(); //格式化段落 firstParagraph.getStyleID(); XWPFRun run = firstParagraph.createRun(); int i = 1; run.setText("一、選擇題" + "\r\n"); //換行 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、填空題" + "\r\n"); for (FillQuestion fillQuestion : fillQuestionsRes) { String str = fillQuestion.getQuestion(); run.setText(i + ". " + str + "\r\n"); i++; } run.setText("三、判斷題" + "\r\n"); for (JudgeQuestion judgeQuestion : judgeQuestionRes) { String str = judgeQuestion.getQuestion(); run.setText(i + ". " + str + "\r\n"); i++; } document.createTOC(); try { //設(shè)置相應(yīng)頭 this.setResponseHeader(response, res.getSource() + "試卷.doc"); //輸出流 OutputStream os = response.getOutputStream(); document.write(os); os.flush(); os.close(); } catch (Exception e) { e.printStackTrace(); } } /** * 發(fā)送響應(yīng)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); //遵守緩存規(guī)定 response.addHeader("Pargam", "no-cache"); response.addHeader("Cache-Control", "no-cache"); } catch (Exception ex) { ex.printStackTrace(); } }
效果:
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