前文我们介绍了通过Apache POI导出excel，而Apache POI包含是操作Office Open XML（OOXML）标准和微软的OLE 2复合文档格式（OLE2）的Java API。所以也是可以通过POI来导出word的。本文主要介绍通过SpringBoot集成POI工具实现Word的导出功能。@pdai

知识准备

需要理解Apache POI遵循的标准（Office Open XML（OOXML）标准和微软的OLE 2复合文档格式（OLE2））， 这将对应着API的依赖包。@pdai

什么是POI

Apache POI 是用Java编写的免费开源的跨平台的 Java API，Apache POI提供API给Java程序对Microsoft Office格式档案读和写的功能。POI为“Poor Obfuscation Implementation”的首字母缩写，意为“简洁版的模糊实现”。

Apache POI 是创建和维护操作各种符合Office Open XML（OOXML）标准和微软的OLE 2复合文档格式（OLE2）的Java API。更多请参考官方文档。

实现案例

这里展示SpringBoot集成POI导出用户信息的Word例子。

Pom依赖

引入poi的依赖包

<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中导出的方法

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中导出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@Servicepublic class UserServiceImpl implements IUserService {    @Override    public XWPFDocument generateWordXWPFDocument() {        XWPFDocument doc = new XWPFDocument();        // Title        createTitle(doc, "Java 全栈知识体系");        // Chapter 1        createChapterH1(doc, "1. 知识准备");        createChapterH2(doc, "1.1 什么是POI");        createParagraph(doc, "Apache POI 是创建和维护操作各种符合Office Open XML（OOXML）标准和微软的OLE 2复合文档格式（OLE2）的Java API。用它可以使用Java读取和创建,修改MS Excel文件.而且,还可以使用Java读取和创建MS Word和MSPowerPoint文件。更多请参考[官方文档]()");        createChapterH2(doc, "1.2 POI中基础概念");        createParagraph(doc, "生成xls和xlsx有什么区别？POI对Excel中的对象的封装对应关系？");        // Chapter 2        createChapterH1(doc, "2. 实现案例");        createChapterH2(doc, "2.1 用户列表示例");        createParagraph(doc, "以导出用户列表为例");        // 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);        //表格属性        CTTblPr tablePr = table.getCTTbl().addNewTblPr();        //表格宽度        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 图片导出示例");        createParagraph(doc, "以导出图片为例");        // 图片        InputStream stream = null;        try {            XWPFParagraph paragraph2 = doc.createParagraph();            Resource resource = new ClassPathResource("pdai-guli.png");            stream = new FileInputStream(resource.getFile());            XWPFRun run = paragraph2.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("宋体");        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;    }}

导出

导出后的word

示例源码

参考文档

更多内容

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