Java POI导出Word、Excel、Pdf文档(可在线预览PDF)
1、导入依赖Pom.xml
org.apache.poi
poi
3.14
org.apache.poi poi-ooxml 3.14 org.apache.poi poi-scratchpad 3.17 com.aspose aspose-words 15.8.0 cn.afterturn easypoi-base 4.3.0
2、Controller
@ApiOperation(value = "免用箱申请保函，word")
@GetMapping("/freeBoxApplication")
@Log(title = "免用箱申请保函", businessType = BusinessType.EXPORT)
public ReturnResult freeBoxApplication(HttpServletResponse response, @RequestParam("id") String id) {
response.setCharacterEncoding("UTF-8");
XWPFDocument xwpfDocument = null;
try {
String fileNameEncode = URLEncoder.encode("免用箱申请保函", "UTF-8");
String fileName = URLDecoder.decode(fileNameEncode, "UTF-8");
xwpfDocument = wordService.freeBoxApplication(Long.valueOf(id));
response.setContentType("application/msword");
response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".docx");
xwpfDocument.write(response.getOutputStream());
return ReturnResult.success();
} catch (Exception e) {
return ReturnResult.error(e.getMessage());
} finally {
if (xwpfDocument != null) {
try {
xwpfDocument.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
@ApiOperation(value = "免用箱申请保函PDF")
@GetMapping("/freeBoxApplicationPDF")
@Log(title = "免用箱申请保函PDF", businessType = BusinessType.EXPORT)
public ReturnResult freeBoxApplicationPDF(HttpServletResponse response, @RequestParam("id") String id,@RequestParam("isPreview") Boolean isPreview) {
//isPreview为true，表示在线预览PDF，不用下载
InputStream is = null;
response.setCharacterEncoding("UTF-8");
try {
String fileNameEncode = URLEncoder.encode("免用箱申请保函", "UTF-8");
String fileName = URLDecoder.decode(fileNameEncode, "UTF-8");
is = pdfService.freeBoxApplicationPDF(Long.valueOf(id), fileName,isPreview);
response.setContentType("application/mspdf");
response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".pdf");
String downFileName = redisCache.getCacheObject("downFileName");
redisCache.deleteObject("downFileName");
response.setHeader("preview_file_path", java.net.URLEncoder.encode(downFileName+".pdf", "UTF-8"));
response.setHeader("isPreview", isPreview.toString());
response.setHeader("Access-Control-Expose-Headers", "preview_file_path,isPreview");//允许前端获取相应头
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
if (!isPreview){//在线预览PDF,不用返回流
byte[] buffer = new byte[is.available()];
is.read(buffer);
toClient.write(buffer);
}
return ReturnResult.success();
} catch (Exception e) {
return ReturnResult.error(e.getMessage());
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
@ApiOperation(value = "货代单导出，xlsx")
@GetMapping("/freightBill")
@Log(title = "货代单导出", businessType = BusinessType.EXPORT)
public ReturnResult freightBill(HttpServletResponse response, @RequestParam("id") String id) {
response.setCharacterEncoding("UTF-8");
Workbook workbook = null;
try {
workbook = excelService.freightBill(Long.valueOf(id));
response.setContentType("application/vnd.ms-excel");
workbook.write(response.getOutputStream());
return ReturnResult.success();
} catch (Exception e) {
return ReturnResult.error(e.getMessage());
} finally {
if (workbook != null) {
try {
workbook.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}3、Service
a、pdfService
public InputStream freeBoxApplicationPDF(Long id, String fileName,Boolean isPreview) throws Exception {
XWPFDocument xwpfDocument = wordService.freeBoxApplication(id);
InputStream is = Word2PDFUtil.wordToPdf(fileName + UUID.randomUUID(), xwpfDocument,isPreview);
return is;
}b、wordService
public XWPFDocument freeBoxApplication(Long id) throws Exception {
//Map map = commonService.getMarineSpecialMap(id);
Map map = new HashMap<>();
map.put("aa",123);
map.put("bb",456);
XWPFDocument xwpfDocument = WordExportUtil.exportWord07("templates/免用箱申请保函.docx",map);
return xwpfDocument;
}
//模板文档放在\src\main\resources\templates c、excelService
public Workbook freightBill(Long id) throws ErrorMessageException {
//Map map = commonService.getMarineSpecialMap(id);
Map map = new HashMap<>();
map.put("aa",123);
map.put("bb",456);
TemplateExportParams templateExportParams = new TemplateExportParams("templates/货代单.xlsx");
Workbook workbook = ExcelExportUtil.exportExcel(templateExportParams, map);
return workbook;
}
//模板文档放在\src\main\resources\templates 4、Utils
package com.XXX.utils;
import com.aspose.words.Document;
import com.aspose.words.FontSettings;
import com.aspose.words.License;
import com.aspose.words.SaveFormat;
import com.ruoyi.common.core.redis.RedisCache;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.yaml.snakeyaml.Yaml;
import java.io.*;
import java.util.concurrent.TimeUnit;
@Component
public class Word2PDFUtil {
@Autowired
private static RedisCache redisCache;
@Autowired
public void setRedisCache(RedisCache redisCache) {
Word2PDFUtil.redisCache = redisCache;
}
private static boolean license = false;
private static String temDir = "/www/tempFile";
private static final Logger logger = LoggerFactory.getLogger(Word2PDFUtil.class);
//初始化
static {
try {
// license.xml放在src/main/resources文件夹下
// InputStream is = Word2PDFUtil.class.getClassLoader().getResourceAsStream("license.xml");
//某次打成jar包后，读取不了license.xml，折中用下面的两行读取即可
String filePath = System.getProperty("user.dir") + "/config/license.xml";
InputStream is = new BufferedInputStream(new FileInputStream(filePath));
License aposeLic = new License();
aposeLic.setLicense(is);
license = true;
} catch (Exception e) {
license = false;
logger.error("License验证失败...");
e.printStackTrace();
}
}
public static InputStream wordToPdf(String fileName, XWPFDocument xwpfDocument,Boolean isPreview) throws Exception {
FileOutputStream pdfos = null;
InputStream pdfIs = null;
File pdfFile = null;
File wordFile = null;
try {
if (!temDir.endsWith("/")) {
temDir = temDir + File.separator;
}
File dir = new File(temDir);
if (!dir.exists()) {
dir.mkdirs();
}
String tmpPath = temDir + fileName;
//将文件路径存入Redis中，方便预览读取
redisCache.setCacheObject("downFileName",fileName,600, TimeUnit.SECONDS);
//创建word空文件
wordFile = new File(tmpPath + ".docx");
FileOutputStream wos = new FileOutputStream(wordFile);
//在word中写入模板+数据
xwpfDocument.write(wos);
wos.flush();
wos.close();
//生成一个空的PDF文件
pdfFile = new File(tmpPath + ".pdf");
pdfos = new FileOutputStream(pdfFile);
if(temDir.equals("/www/tempFile")){
FontSettings.setFontsFolder("/usr/share/fonts/dejavu",true);
}
//要转换的word文件
Document doc = new Document(tmpPath + ".docx");
//DocToPDF
doc.save(pdfos, SaveFormat.PDF);
//要返回的pdf文件流
pdfIs = new FileInputStream(tmpPath + ".pdf");
} finally {
if (pdfos != null) {
try {
pdfos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
//删除临时文件
if (wordFile.exists()){
wordFile.delete();
}
if (pdfFile.exists() && !isPreview) {
//暂不删除，用于预览查看
pdfFile.delete();
}
}
return pdfIs;
}
}5、模板截图
6、前端
//接口js文件
import request from '@/utils/request'
export function feeConfirmTrackSheet(data) {
return request({
url: '/file/file/costConfirmation',
responseType:'blob',
method: 'get',
params:data
})
}
//导出方法的js文件
//需要导入js-file-download插件
import {
feeConfirmTrackSheet
}
import fileDownload from "js-file-download";
export function downloadFile(customerName, processId, selectFileName, fileType , businessType = 0,isPreview) {
//导出的文件名称
const fileName = `${customerName}-${selectFileName}.${fileType}`
//文件类型
if (fileType === 'docx') {
//模板的文件名称
if (selectFileName === 'XXXXX文件') {
//参数
const data = {
id: processId,
customerName: customerName,
type:businessType
}
//向后端传参取返回值，用插件处理
feeConfirmTrackSheet(data).then(res => {
fileDownload(res, fileName);
})
}else if (fileType === 'pdf') {
if (selectFileName === 'XXXXX文件PDF') {
const data = {
id: processId,
customerName: customerName,
type:businessType,
isPreview
}
feeConfirmTrackSheetPDF(data).then(res => {
if (isPreview){
window.open("http://file.myguoli.cn/"+res, "_blank")
} else {
fileDownload(res, fileName);
}
})
}
}
}
}
//只需在HTML中调用downloadFile方法接口