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這篇文章主要介紹“如何使用Java SpringBoot集成POI實現Word文檔導出”,在日常操作中,相信很多人在如何使用Java SpringBoot集成POI實現Word文檔導出問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”如何使用Java SpringBoot集成POI實現Word文檔導出”的疑惑有所幫助!接下來,請跟著小編一起來學習吧!
需要理解Apache POI遵循的標準(Office Open XML(OOXML)標準和微軟的OLE 2復合文檔格式(OLE2)), 這將對應著API的依賴包。
Apache POI 是用Java編寫的免費開源的跨平臺的 Java API,Apache POI提供API給Java程序對Microsoft Office格式檔案讀和寫的功能。POI為“Poor Obfuscation Implementation”的首字母縮寫,意為“簡潔版的模糊實現”。
Apache POI 是創建和維護操作各種符合Office Open XML(OOXML)標準和微軟的OLE 2復合文檔格式(OLE2)的Java API。
這里展示SpringBoot集成POI導出用戶信息的Word例子。
引入poi的依賴包
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>5.2.2</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>5.2.2</version> </dependency>
UserController中導出的方法
package tech.pdai.springboot.file.word.poi.controller; import java.io.OutputStream; import javax.servlet.http.HttpServletResponse; import io.swagger.annotations.ApiOperation; import org.apache.poi.xwpf.usermodel.XWPFDocument; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import tech.pdai.springboot.file.word.poi.service.IUserService; /** * @author pdai */ @RestController @RequestMapping("/user") public class UserController { @Autowired private IUserService userService; @ApiOperation("Download Word") @GetMapping("/word/download") public void download(HttpServletResponse response){ try { XWPFDocument document = userService.generateWordXWPFDocument(); response.reset(); response.setContentType("application/vnd.ms-excel"); response.setHeader("Content-disposition", "attachment;filename=user_world_" + System.currentTimeMillis() + ".docx"); OutputStream os = response.getOutputStream(); document.write(os); os.close(); } catch (Exception e) { e.printStackTrace(); } } }
UserServiceImple中導出Word方法
package tech.pdai.springboot.file.word.poi.service.impl; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.math.BigInteger; import java.util.ArrayList; import java.util.List; import lombok.extern.slf4j.Slf4j; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.util.Units; import org.apache.poi.xwpf.usermodel.BreakType; import org.apache.poi.xwpf.usermodel.Document; import org.apache.poi.xwpf.usermodel.ParagraphAlignment; import org.apache.poi.xwpf.usermodel.XWPFDocument; import org.apache.poi.xwpf.usermodel.XWPFParagraph; import org.apache.poi.xwpf.usermodel.XWPFRun; import org.apache.poi.xwpf.usermodel.XWPFTable; import org.apache.poi.xwpf.usermodel.XWPFTableCell; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblPr; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblWidth; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.stereotype.Service; import tech.pdai.springboot.file.word.poi.entity.User; import tech.pdai.springboot.file.word.poi.service.IUserService; /** * @author pdai */ @Slf4j @Service public class UserServiceImpl implements IUserService { @Override public XWPFDocument generateWordXWPFDocument(){ XWPFDocument doc = new XWPFDocument(); // Title createTitle(doc, "Java 全棧知識體系"); // Chapter 1 createChapterH1(doc, "1. 知識準備"); createChapterH2(doc, "1.1 什么是POI"); createParagraph(doc, "Apache POI 是創建和維護操作各種符合Office Open XML(OOXML)標準和微軟的OLE 2復合文檔格式(OLE2)的Java API。用它可以使用Java讀取和創建,修改MS Excel文件.而且,還可以使用Java讀取和創建MS Word和MSPowerPoint文件。更多請參考[官方文檔](https://poi.apache.org/index.html)"); createChapterH2(doc, "1.2 POI中基礎概念"); createParagraph(doc, "生成xls和xlsx有什么區別?POI對Excel中的對象的封裝對應關系?"); // Chapter 2 createChapterH1(doc, "2. 實現案例"); createChapterH2(doc, "2.1 用戶列表示例"); createParagraph(doc, "以導出用戶列表為例"); // 表格 List<User> userList = getUserList(); XWPFParagraph paragraph = doc.createParagraph(); XWPFTable table = paragraph.getDocument().createTable(userList.size(), 5); table.setWidth(500); table.setCellMargins(20, 20, 20, 20); //表格屬性 CTTblPr tablePr = table.getCTTbl().addNewTblPr(); //表格寬度 CTTblWidth width = tablePr.addNewTblW(); width.setW(BigInteger.valueOf(8000)); for(int i = 0; i< userList.size(); i++) { List<XWPFTableCell> tableCells = table.getRow(i).getTableCells(); tableCells.get(0).setText(userList.get(i).getId()+""); tableCells.get(1).setText(userList.get(i).getUserName()); tableCells.get(2).setText(userList.get(i).getEmail()); tableCells.get(3).setText(userList.get(i).getPhoneNumber()+""); tableCells.get(4).setText(userList.get(i).getDescription()); } createChapterH2(doc, "2.2 圖片導出示例"); createParagraph(doc, "以導出圖片為例"); // 圖片 InputStream stream = null; try { XWPFParagraph paragraph4 = doc.createParagraph(); Resource resource = new ClassPathResource("pdai-guli.png"); stream = new FileInputStream(resource.getFile()); XWPFRun run = paragraph4.createRun(); run.addPicture(stream, Document.PICTURE_TYPE_PNG, "Generated", Units.toEMU(256), Units.toEMU(256)); } catch (IOException | InvalidFormatException e) { e.printStackTrace(); } return doc; } private void createTitle(XWPFDocument doc, String content){ XWPFParagraph title = doc.createParagraph(); title.setAlignment(ParagraphAlignment.CENTER); XWPFRun r1 = title.createRun(); r1.setBold(true); r1.setFontFamily("宋體"); r1.setText(content); r1.setFontSize(22); } private void createChapterH1(XWPFDocument doc, String content){ XWPFParagraph actTheme = doc.createParagraph(); actTheme.setAlignment(ParagraphAlignment.LEFT); XWPFRun runText1 = actTheme.createRun(); runText1.setBold(true); runText1.setText(content); runText1.setFontSize(18); } private void createChapterH2(XWPFDocument doc, String content){ XWPFParagraph actType = doc.createParagraph(); XWPFRun runText2 = actType.createRun(); runText2.setBold(true); runText2.setText(content); runText2.setFontSize(15); } private void createParagraph(XWPFDocument doc, String content){ XWPFParagraph actType = doc.createParagraph(); XWPFRun runText2 = actType.createRun(); runText2.setText(content); runText2.setFontSize(11); } private List<User> getUserList(){ List<User> userList = new ArrayList<>(); for (int i = 0; i < 5; i++) { userList.add(User.builder() .id(Long.parseLong(i + "")).userName("pdai" + i).email("pdai@pdai.tech" + i).phoneNumber(121231231231L) .description("hello world" + i) .build()); } return userList; } }
導出:
導出后的word:
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