用 Apache POI 将 Word 文档转换为 PDF，PDF 转图片
使用 Apache POI 将 Word 文档转换为 PDF，PDF 转图片
找了很多网上例子，写得很杂而且用不了， 自己花了一天时间把整理好，废话不多说，直接上代码
必要依赖
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.27</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox-tools</artifactId>
<version>2.0.27</version>
</dependency>
<!-- 填充word-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.17</version>
</dependency>
<!--word转pdf, 填充word-->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<!--word转pdf-->
<dependency>
<groupId>fr.opensagres.xdocreport</groupId>
<artifactId>fr.opensagres.poi.xwpf.converter.pdf-gae</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-local</artifactId>
<version>1.0.3</version>
</dependency>
<dependency>
<groupId>com.documents4j</groupId>
<artifactId>documents4j-transformer-msoffice-word</artifactId>
<version>1.0.3</version>
</dependency>
<!--pdf转图片-->
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>3.0.0-alpha2</version>
</dependency>
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>fontbox</artifactId>
<version>3.0.0-alpha2</version>
</dependency>
工具类
package com.xxx.common.utils;
import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import com.documents4j.api.DocumentType;
import com.documents4j.api.IConverter;
import com.documents4j.job.LocalConverter;
import lombok.extern.slf4j.Slf4j;
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import org.apache.poi.xwpf.usermodel.*;
import javax.imageio.ImageIO;
import java.io.*;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* @description: 工具类
*/
@Slf4j
public class WordUtils {
/**
* @Date: 2023/2/20 17:42
* @param path 模版路径
* @param outPath 输出路径
* @param dict 需要替换的信息集合
* @Return: boolean
* @description: 根据dict编译模版中的文本和表格
*/
public static void compile(String path, String outPath, Map<String, Object> dict) throws Exception{
FileInputStream is = new FileInputStream(path);
XWPFDocument document = new XWPFDocument(is);
if (dict != null) {
// 替换掉表格之外的文本(仅限文本)
WordUtils.compileText(document, dict);
// 替换表格内的文本对象
WordUtils.compileTable(document, dict);
}
File f = new File(outPath.substring(0, outPath.lastIndexOf(File.separator)));
if(!f.exists()){
f.mkdirs();
}
FileOutputStream out = new FileOutputStream(outPath);
document.write(out);
}
/***
* @Description :替换段落文本
* @param document docx解析对象
* @param dict 需要替换的信息集合
* @return void
* @Date 2022/11/17 17:22
*/
public static void compileText(XWPFDocument document, Map<String, Object> dict) {
// 获取段落集合
Iterator<XWPFParagraph> iterator = document.getParagraphsIterator();
XWPFParagraph paragraph = null;
while (iterator.hasNext()) {
paragraph = iterator.next();
// 判断此段落是否需要替换
if (checkText(paragraph.getText())) {
replaceValue(paragraph, dict);
}
}
}
/***
* @Description :替换表格内的文字
* @param document
* @param dict 需要替换的信息集合
* @return void
* @Date 2022/11/18 11:29
*/
public static void compileTable(XWPFDocument document, Map<String, Object> dict) {
// 获取文件的表格
Iterator<XWPFTable> tableList = document.getTablesIterator();
XWPFTable table;
List<XWPFTableRow> rows;
List<XWPFTableCell> cells;
// 循环所有需要进行替换的文本，进行替换
while (tableList.hasNext()) {
table = tableList.next();
if (checkText(table.getText())) {
rows = table.getRows();
// 遍历表格，并替换模板
for (XWPFTableRow row : rows) {
cells = row.getTableCells();
for (XWPFTableCell cell : cells) {
// 判断单元格是否需要替换
if (checkText(cell.getText())) {
List<XWPFParagraph> paragraphs = cell.getParagraphs();
for (XWPFParagraph paragraph : paragraphs) {
replaceValue(paragraph, dict);
}
}
}
}
}
}
}
/**
* @Date: 2023/2/20 17:31
* @param paragraph word文本
* @param dict 需要替换的信息集合
* @description: 替换字符串
*/
private static void replaceValue(XWPFParagraph paragraph, Map<String, Object> dict) {
String nextLine;
List<XWPFRun> runs = paragraph.getRuns();
for (int i = 0; i < runs.size(); i++) {
// 读取当前行
String readLine = runs.get(i).text();
// System.out.println("readLine:" + readLine);
// 如果为空 或 不包含目标字符串 则跳过
if(StringUtils.isEmpty(readLine) || !readLine.contains("$")) continue;
// 初始化结果集
StringBuffer sb = new StringBuffer();
// 循环处理当前行的模版串
while (readLine.contains("$")){
// 获取模版串左侧字符串
int left;
if(readLine.contains("${")){
left = readLine.indexOf("${");
}else {
if(runs.size() < i+1){
break;
}
nextLine = runs.get(i+1).text();
if(!nextLine.startsWith("{")) break;
readLine += nextLine;
paragraph.removeRun(i+1);
left = readLine.indexOf("${");
}
sb.append(readLine.substring(0, left));
// 获取模版串右侧
while(runs.size() >= i+1 && !readLine.contains("}")){
nextLine = runs.get(i+1).text();
readLine += nextLine;
paragraph.removeRun(i+1);
}
int right = readLine.indexOf("}");
if(right == -1) break;
// 替换模版串 [如果字典中不存在 则替换为空串]
sb.append(dict.getOrDefault(readLine.substring(left, right+1), ""));
if(right + 1 < readLine.length()){
sb.append(readLine.substring(right + 1));
}
readLine = sb.toString();
}
runs.get(i).setText(sb.toString(), 0);
}
}
/***
* @Description :检查文本中是否包含指定的字符(此处为“$”)
* @param text
* @return boolean
* @Date 2022/11/17 17:22
*/
private static boolean checkText(String text) {
return text.contains("$");
}
/**
* 通过documents4j 实现word转pdf
*
* @param sourcePath 源文件地址 如 /root/example.doc
* @param targetPath 目标文件地址 如 /root/example.pdf
*/
public static void documents4jWordToPdf(String sourcePath, String targetPath) {
File inputWord = new File(sourcePath);
File outputFile = new File(targetPath);
try {
InputStream docxInputStream = new FileInputStream(inputWord);
OutputStream outputStream = new FileOutputStream(outputFile);
IConverter converter = LocalConverter.builder().build();
boolean execute = converter.convert(docxInputStream)
.as(DocumentType.DOCX)
.to(outputStream)
.as(DocumentType.PDF).schedule().get();
outputStream.close();
docxInputStream.close();
log.info("转换完毕 targetPath = {}", outputFile.getAbsolutePath());
System.out.println("转换完毕 targetPath = " + outputFile.getAbsolutePath());
converter.shutDown();
return;
} catch (Exception e) {
log.error("[documents4J] word转pdf失败:{}", e.toString());
}
}
/**
* 将生成的 Word 文档转换为 PDF 格式
* @param wordPath Word 文档路径
* @param pdfPath 生成的 PDF 路径
*/
public static void convertToPDF(String wordPath , String pdfPath ) {
documents4jWordToPdf(wordPath, pdfPath);
}
/**
* PDF文件转图片
* @param sourcePath PDF文件地址
*/
public void execute(String sourcePath) {
File file = new File(sourcePath);
String path = file.getAbsolutePath();
String targetPathNoExt = path.substring(0, path.lastIndexOf("."));
try {
PDDocument doc = Loader.loadPDF(file);
PDFRenderer renderer = new PDFRenderer(doc);
int pageCount = doc.getNumberOfPages();
for (int i = 0; i < pageCount; i++) {
// System.out.println("当前页面" + (i + 1));
BufferedImage image = renderer.renderImageWithDPI(i, 296);
// BufferedImage image = renderer.renderImage(i, 2.5f);
ImageIO.write(image, "PNG", new File(targetPathNoExt + "_" + i + ".png"));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
测试代码
/**
* 填充word并生成pdf
* @throws Exception
*/
@Test
public void fillTemplate() throws Exception {
//填充word 需要在文档定义： ${name}
Map<String, Object> strData = new HashMap<>();
strData.put("${name}", "xxx"); //客户名称
strData.put("${createDate}", DateUtil.format(DateUtil.date(), DatePattern.CHINESE_DATE_PATTERN));
strData.put("${openingAccountBalance}", 121);//期初账户余额（元）
strData.put("${rechargeAmount}", 121);//新增充值金额（元）
strData.put("${totalConsumptionAmount}", 121);//本账期内消费（元）
strData.put("${balanceAfterSettlement}", 121);//期末账户余额（元）
String readPath = "C:\\Users\\gukt\\Desktop\\template.docx"; //word模板
String outPath = "C:\\Users\\gukt\\Desktop\\output.docx"; //输出填充word路径
String outPdfPath = "C:\\Users\\gukt\\Desktop\\output.pdf"; //输入word转pdf路径
WordUtils.compile(readPath, outPath, strData); //填充word，如果只要word转pdf这里可以不要
// 转换操作，可单独使用
WordUtils.convertToPDF(outPath,outPdfPath); //word转pdf
WordUtils.execute(outPdfPath ); //pdf转图片png
}