声明：只记录，不推荐，因为e-iceblue的spire.pdf是收费的，要licence。

pom引入

<repositories><repository><id>com.e-iceblue</id><name>e-iceblue</name><url>https://repo.e-iceblue.cn/repository/maven-public/</url></repository></repositories>
<dependency><groupId>e-iceblue</groupId><artifactId>spire.pdf</artifactId><version>10.7.3</version></dependency><dependency><groupId>e-iceblue</groupId><artifactId>spire.xls</artifactId><version>14.7.7</version></dependency>

demo代码：

java">
import com.spire.pdf.FileFormat;
import com.spire.pdf.PdfDocument;
import com.spire.pdf.utilities.PdfTable;
import com.spire.pdf.utilities.PdfTableExtractor;
import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;
/*** @className: PDF2ExcelUtil* @description:* @author: spirit* @date: 2024-09-05 10:20* @version: 1.0**/public class PDF2ExcelUtil {public static void convertPDF(){//创建PdfDocument实例PdfDocument pdf = new PdfDocument();//加载PDF文档pdf.loadFromFile("E:/xxx-已加密.pdf","123");//保存为Excelpdf.saveToFile("E:/PDFToXLS.xlsx", FileFormat.XLSX);}public static void main(String[] args) {//创建PdfDocument实例PdfDocument pdf = new PdfDocument();//加载PDF文档pdf.loadFromFile("E:/xxx-已加密.pdf","123");//实例化Workbook类的对象Workbook workbook = new Workbook();//清除默认工作表workbook.getWorksheets().clear();//实例化PdfTableExtractor类的对象PdfTableExtractor extractor = new PdfTableExtractor(pdf);int sheetNumber = 1;//遍历PDF页面for (int pageIndex = 0; pageIndex < pdf.getPages().getCount(); pageIndex++) {//提取页面中的表格存入PdfTable[]数组PdfTable[] tableList = extractor.extractTable(pageIndex);if (tableList != null && tableList.length > 0) {//遍历表格for (PdfTable table : tableList) {//添加工作表Worksheet sheet = workbook.getWorksheets().add("Sheet" + sheetNumber);//获取表格的行数和列数int row = table.getRowCount();int column = table.getColumnCount();//遍历行和列for (int i = 0; i < row; i++) {for (int j = 0; j < column; j++) {//获取表格单元格中的文本内容String text = table.getText(i, j);//将获取的文本写入Excel工作表sheet.get(i + 1, j + 1).setValue(text);}}sheetNumber++;}}}//将工作簿保存为Excel文件workbook.saveToFile("E:/xxx-已加密.xlsx");}
}