首先准备一个Word文档模板（template.docx）：
准备一张图片：
查看实际效果：
需要的相关依赖：
org.apache.poi poi-ooxml 3.17
文件导出工具类（FileExportUtil.java）：
package com.kd.opt.util;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.util.Units;
import org.apache.poi.xwpf.usermodel.*;
import org.springframework.stereotype.Component;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@Component
public class FileExportUtil {
public void exportWord(String path, Map params, String filename, HttpServletResponse response) throws IOException, InvalidFormatException {
InputStream is = new FileInputStream(path);
XWPFdocument docx = new XWPFdocument(is);
iteraTable(params, docx);
OutputStream os = response.getOutputStream();
// 设置导出的内容是doc
response.setContentType("application/octet-stream; charset=utf-8");
response.setHeader("Content-disposition", "attachment; filename=" + filename);
docx.write(os);
close(os);
}
private void iteraTable(Map params, XWPFdocument doc) throws IOException, InvalidFormatException {
List rows = null;
List cells = null;
List tables = doc.getTables();
// 遍历这个word文档的所有table表格
for (XWPFTable table : tables) {
rows = table.getRows();
// 遍历这个表格的所有行
for (XWPFTableRow row : rows) {
cells = row.getTableCells();
// 遍历这一行的单元格
for (XWPFTableCell cell : cells) {
// 判断该单元格的内容是否是字符串字段
if (strMatcher(cell.getText()).find()) {
// 替换字符串 字符串可以多行 也可以一行
replaceInStr(cell, params, doc);
continue;
}
// 判断该单元格内容是否是需要替换的图片
if (imgMatcher(cell.getText()).find()) {
// 把模板中的内容替换成图片 图片可以多张
replaceInImg(cell, params, doc);
continue;
}
}
}
}
}
private Matcher imgMatcher(String imgstr) {
Pattern pattern = Pattern.compile("@\{(.+?)\}");
Matcher matcher = pattern.matcher(imgstr);
return matcher;
}
private Matcher strMatcher(String str) {
Pattern pattern = Pattern.compile("\$\{(.+?)\}");
Matcher matcher = pattern.matcher(str);
return matcher;
}
private void replaceInStr(XWPFTableCell cell, Map params, XWPFdocument doc) {
// 两种数据类型：一种是直接String，还有一种是List
String key = cell.getText().substring(2, cell.getText().length() - 1);
Integer datatype = getMapStrDataTypevalue(params, key);
List parags = cell.getParagraphs();
// 先清空单元格中所有的段落
for (int i = 0; i < parags.size(); i++) {
cell.removeParagraph(i);
}
if (datatype.equals(0)) {
return;
} else if (datatype.equals(2)) {
// 如果类型是2 说明数据类型是List
List strs = (List) params.get(key);
Iterator iterator = strs.iterator();
while (iterator.hasNext()) {
XWPFParagraph para = cell.addParagraph();
XWPFRun run = para.createRun();
run.setText(iterator.next());
}
} else if (datatype.equals(3)) {
String str = (String) params.get(key).toString();
cell.setText(str);
}
}
private void replaceInImg(XWPFTableCell cell, Map params, XWPFdocument doc) throws IOException, InvalidFormatException {
String key = cell.getText().substring(2, cell.getText().length() - 1);
Integer dataType = getMapImgDataType(params, key);
List parags = cell.getParagraphs();
// 先清空单元格中所有的段落
for (int i = 0; i < parags.size(); i++) {
cell.removeParagraph(i);
}
if (dataType.equals(0)) {
return;
} else if (dataType.equals(1)) {
// 处理单张图片
XWPFParagraph parag = cell.addParagraph();
Map pic = (Map) params.get(key);
insertImg(pic, parag);
} else if (dataType.equals(2)) {
// 处理多张图片
List> pics = (List>) params.get(key);
Iterator> iterator = pics.iterator();
XWPFParagraph para = cell.addParagraph();
Integer count = 0;
while (iterator.hasNext()) {
Map pic = iterator.next();
// 图片并排插入
if (Integer.parseInt(pic.get("style").toString()) == 1) {
}
// 图片竖排插入
if (Integer.parseInt(pic.get("style").toString()) == 2) {
if (count > 0) {
para = cell.addParagraph();
}
}
insertImg(pic, para);
count++;
}
}
}
private void insertImg(Map pic, XWPFParagraph para) throws IOException, InvalidFormatException {
if (pic.get("imgPath").toString() == null) {
return;
}
String picPath = pic.get("imgPath").toString();
InputStream is = new FileInputStream(picPath);
BufferedImage bi = ImageIO.read(new File(picPath));
XWPFRun run = para.createRun();
// 原图片的长宽
Integer width = bi.getWidth();
Integer heigh = bi.getHeight();
Double much = 80.0 / width;
// 图片按宽80 比例缩放
run.addPicture(is, getPictureType(picPath.substring(picPath.lastIndexOf(".") + 1)), "", Units.toEMU(80), Units.toEMU(heigh * much));
// 图片原长宽
// run.addPicture(is, getPictureType(picPath.substring(picPath.lastIndexOf(".") + 1)), "", Units.toEMU(width), Units.toEMU(heigh));
close(is);
bi = null;
}
private Integer getMapStrDataTypevalue(Map params, String key) {
if (params.get(key) == null) {
return 0;
} else if (params.get(key) instanceof List) {
return 2;
} else if (params.get(key) instanceof String) {
return 3;
} else {
throw new RuntimeException("String Data Type Error!");
}
}
private Integer getMapImgDataType(Map params, String key) {
if (params.get(key) == null) {
return 0;
} else if (params.get(key) instanceof Map) {
return 1;
} else if (params.get(key) instanceof List) {
return 2;
} else {
throw new RuntimeException("Image Data Type Error!");
}
}
private int getPictureType(String picType) {
int result = XWPFdocument.PICTURE_TYPE_PICT;
if (picType != null) {
if (picType.equalsIgnoreCase("png")) {
result = XWPFdocument.PICTURE_TYPE_PNG;
} else if (picType.equalsIgnoreCase("dib")) {
result = XWPFdocument.PICTURE_TYPE_DIB;
} else if (picType.equalsIgnoreCase("emf")) {
result = XWPFdocument.PICTURE_TYPE_EMF;
} else if (picType.equalsIgnoreCase("jpg") || picType.equalsIgnoreCase("jpeg")) {
result = XWPFdocument.PICTURE_TYPE_JPEG;
} else if (picType.equalsIgnoreCase("wmf")) {
result = XWPFdocument.PICTURE_TYPE_WMF;
}
}
return result;
}
private void close(InputStream is) {
if (is != null) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void close(OutputStream os) {
if (os != null) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
文件导出控制器（FileExportController.java）：
package com.kd.opt.controller;
import com.kd.opt.util.FileExportUtil;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@RestController
@CrossOrigin
@RequestMapping("/FileExportController")
public class FileExportController {
@Autowired
private FileExportUtil fileExportUtil;
@GetMapping("/exportWord")
public void exportWord(HttpServletResponse response) throws IOException, InvalidFormatException {
// 模板路径
String path = "D:\MyComputer\template.docx";
// 传入模板的参数
Map params = new HashMap<>();
// 模板的导出文件名字
String filename = "newFile.docx";
// 一个单元格内一行字
params.put("username", "小辰哥哥");
params.put("sex", "男");
// 一个单元格内多行字
List hobby = new ArrayList<>();
hobby.add("1、编程");
hobby.add("2、打篮球");
hobby.add("3、睡觉");
params.put("hobby", hobby);
//图片参数1 多张图片 图片多行竖排排列 style为2
List> imgsS1List = new ArrayList<>();
Map imgS1 = new HashMap<>();
imgS1.put("style", 2);
imgS1.put("imgPath", "D:\MyComputer\test.jpg");
imgsS1List.add(imgS1);
Map imgS2 = new HashMap<>();
imgS2.put("style", 2);
imgS2.put("imgPath", "D:\MyComputer\test.jpg");
imgsS1List.add(imgS2);
Map imgS3 = new HashMap<>();
imgS3.put("style", 2);
imgS3.put("imgPath", "D:\MyComputer\test.jpg");
imgsS1List.add(imgS3);
params.put("img1", imgsS1List);
// 图片参数2 多张图片 一行内横排排列 style为1
List> imgsH2List = new ArrayList<>();
Map imgH1 = new HashMap<>();
imgH1.put("style", 1);
imgH1.put("imgPath", "D:\MyComputer\test.jpg");
imgsH2List.add(imgH1);
Map imgH2 = new HashMap<>();
imgH2.put("style", 1);
imgH2.put("imgPath", "D:\MyComputer\test.jpg");
imgsH2List.add(imgH2);
Map imgH3 = new HashMap<>();
imgH3.put("style", 1);
imgH3.put("imgPath", "D:\MyComputer\test.jpg");
imgsH2List.add(imgH3);
params.put("img2", imgsH2List);
// 图片参数3 单张图片
Map img3 = new HashMap<>();
img3.put("imgPath", "D:\MyComputer\test.jpg");
params.put("img3", img3);
fileExportUtil.exportWord(path, params, filename, response);
}
}
访问接口：
http://localhost:9090/OperateTicket/FileExportController/exportWord
成功：
总结
每天一个提升小技巧！！！
