首先先引入包：加水印和excel转PDF的
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.12</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.2</version> <!-- 版本号根据您实际使用的版本进行调整 -->
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.2</version> <!-- 根据实际需要选择版本号 -->
</dependency>然后两个工具类，第一个是加水印的
package org.springblade.common.tool;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import org.apache.commons.io.IOUtils;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import java.io.*;
import java.util.List;
public class PDFWatermarkExample {
public static void addWatermark(String inputFile, String outputFile, String watermarkText) {
try {
PdfReader reader = new PdfReader(inputFile);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(outputFile));
int numberOfPages = reader.getNumberOfPages();
for (int i = 1; i <= numberOfPages; i++) {
PdfContentByte content = stamper.getUnderContent(i);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.5f); // 设置水印透明度
content.setGState(gs);
ColumnText.showTextAligned(
content,
Element.ALIGN_CENTER,
new Phrase(watermarkText, new Font(Font.FontFamily.HELVETICA, 40)),
reader.getPageSizeWithRotation(i).getWidth() / 2,
reader.getPageSizeWithRotation(i).getHeight() / 2,
45
);
}
stamper.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void addWatermarkMulti(String inputFile, String outputFile, String watermarkText) {
try {
PdfReader reader = new PdfReader(inputFile);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(outputFile));
int numberOfPages = reader.getNumberOfPages();
for (int i = 1; i <= numberOfPages; i++) {
PdfContentByte content = stamper.getOverContent(i);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.5f); // 设置水印透明度
content.setGState(gs);
Rectangle pageSize = reader.getPageSizeWithRotation(i);
float pageWidth = pageSize.getWidth();
float pageHeight = pageSize.getHeight();
// 设置水印间隔
float xInterval = 200; // X轴间隔
float yInterval = 50; // Y轴间隔
// 计算水印个数
int xCount = (int) Math.ceil(pageWidth / xInterval);
int yCount = (int) Math.ceil(pageHeight / yInterval);
// 平铺水印
for (int x = 0; x < xCount; x++) {
for (int y = 0; y < yCount; y++) {
float xPosition = x * xInterval;
float yPosition = y * yInterval;
ColumnText.showTextAligned(
content,
Element.ALIGN_CENTER,
new Phrase(watermarkText, new Font(Font.FontFamily.HELVETICA, 40)),
xPosition,
yPosition,
45
);
}
}
}
stamper.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void addWatermarkMultiCN(String inputFile, String outputFile, String watermarkText) {
try {
PdfReader reader = new PdfReader(inputFile);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(outputFile));
int numberOfPages = reader.getNumberOfPages();
Resource resource = new ClassPathResource("simhei.ttf"); // 加载位于resources目录下的字体文件
InputStream inputStream = resource.getInputStream();
byte[] fontBytes = IOUtils.toByteArray(inputStream);
BaseFont baseFont = BaseFont.createFont("simhei.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, true, fontBytes, null); // 创建BaseFont对象
for (int i = 1; i <= numberOfPages; i++) {
PdfContentByte content = stamper.getOverContent(i);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.5f); // 设置水印透明度
content.setGState(gs);
Rectangle pageSize = reader.getPageSizeWithRotation(i);
float pageWidth = pageSize.getWidth();
float pageHeight = pageSize.getHeight();
// 设置水印间隔
float xInterval = 200; // X轴间隔
float yInterval = 50; // Y轴间隔
// 计算水印个数
int xCount = (int) Math.ceil(pageWidth / xInterval);
int yCount = (int) Math.ceil(pageHeight / yInterval);
// 平铺水印
for (int x = 0; x < xCount; x++) {
for (int y = 0; y < yCount; y++) {
float xPosition = x * xInterval;
float yPosition = y * yInterval;
ColumnText.showTextAligned(
content,
Element.ALIGN_CENTER,
new Phrase(watermarkText, new Font(baseFont, 40)), // 使用创建的中文字体
xPosition,
yPosition,
45
);
}
}
}
stamper.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
*
* @param inputStream 文件输入流
* @param watermarkText 水印文字
* @return
*/
public static ByteArrayOutputStream addWatermarkToPdfStream(InputStream inputStream, String watermarkText) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
PdfReader reader = new PdfReader(inputStream);
PdfStamper stamper = new PdfStamper(reader, outputStream);
int numberOfPages = reader.getNumberOfPages();
// ...（原有的水印添加逻辑）
Resource resource = new ClassPathResource("simhei.ttf"); // 加载位于resources目录下的字体文件
InputStream inputStreamTTF = resource.getInputStream();
byte[] fontBytes = IOUtils.toByteArray(inputStreamTTF);
BaseFont baseFont = BaseFont.createFont("simhei.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, true, fontBytes, null); // 创建BaseFont对象
for (int i = 1; i <= numberOfPages; i++) {
PdfContentByte content = stamper.getOverContent(i);
PdfGState gs = new PdfGState();
gs.setFillOpacity(0.3f); // 设置水印透明度
content.setGState(gs);
Rectangle pageSize = reader.getPageSizeWithRotation(i);
float pageWidth = pageSize.getWidth();
float pageHeight = pageSize.getHeight();
// 设置水印间隔
float xInterval = 400; // X轴间隔
float yInterval = 150; // Y轴间隔
// 计算水印个数
int xCount = (int) Math.ceil(pageWidth / xInterval);
int yCount = (int) Math.ceil(pageHeight / yInterval);
// 平铺水印
for (int x = 0; x < xCount; x++) {
for (int y = 0; y < yCount; y++) {
float xPosition = x * xInterval;
float yPosition = y * yInterval;
ColumnText.showTextAligned(
content,
Element.ALIGN_CENTER,
new Phrase(watermarkText, new Font(baseFont, 20)), // 使用创建的中文字体
xPosition,
yPosition,
45
);
}
}
}
stamper.close();
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
return outputStream;
}
public static void addWatermarkExample(List<File> files) {
// 在这里编写添加水印的代码逻辑，使用上面提到的添加水印的示例代码
for (File file : files) {
addWatermark(file.getPath(), file.getPath(), "Watermark Text");
}
}
public static void main(String[] args) {
String inputFile = "D:\\Downloads\\123.pdf";
String outputFile = "D:\\Downloads\\456.pdf";
String watermarkText = "这是中文水印";
addWatermarkMultiCN(inputFile, outputFile, watermarkText);
String outputFileStream = "D:\\Downloads\\789.pdf";
String watermarkText02 = "这是读取流返回流";
try (InputStream input = new FileInputStream(inputFile)) {
ByteArrayOutputStream output = addWatermarkToPdfStream(input, watermarkText02);
try (OutputStream fileOutput = new FileOutputStream(outputFileStream)) {
output.writeTo(fileOutput);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
别忘记字体在resource里面读取的
第二个是转PDF的
package org.springblade.common.tool;
import cn.hutool.core.collection.CollUtil;
import com.itextpdf.text.*;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;
import lombok.experimental.UtilityClass;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Objects;
@UtilityClass
public class ExcelToPdfUtil {
public static void excelToPdf(String excelPath, String pdfPath, String excelSuffix) {
try (InputStream in = Files.newInputStream(Paths.get(excelPath));
OutputStream out = Files.newOutputStream(Paths.get(pdfPath))) {
ExcelToPdfUtil.excelToPdf(in, out, excelSuffix);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Excel转PDF并写入输出流
*
* @param inStream Excel输入流
* @param outStream PDF输出流
* @param excelSuffix Excel类型 .xls 和 .xlsx
* @throws Exception 异常信息
*/
public static void excelToPdf(InputStream inStream, OutputStream outStream, String excelSuffix) throws Exception {
// 输入流转workbook，获取sheet
Sheet sheet = getPoiSheetByFileStream(inStream, 0, excelSuffix);
// 获取列宽度占比
float[] widths = getColWidth(sheet);
PdfPTable table = new PdfPTable(widths);
table.setWidthPercentage(100);
int colCount = widths.length;
//设置基本字体
BaseFont baseFont = BaseFont.createFont("C:\\Windows\\Fonts\\simsun.ttc,0", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
// 遍历行
for (int rowIndex = sheet.getFirstRowNum(); rowIndex <= sheet.getLastRowNum(); rowIndex++) {
Row row = sheet.getRow(rowIndex);
if (Objects.isNull(row)) {
// 插入空对象
for (int i = 0; i < colCount; i++) {
table.addCell(createPdfPCell(null, 0, 13f, null));
}
} else {
// 遍历单元格
for (int columnIndex = 0; (columnIndex < row.getLastCellNum() || columnIndex < colCount) && columnIndex > -1; columnIndex++) {
PdfPCell pCell = excelCellToPdfCell(sheet, row.getCell(columnIndex), baseFont);
// 是否合并单元格
if (isMergedRegion(sheet, rowIndex, columnIndex)) {
int[] span = getMergedSpan(sheet, rowIndex, columnIndex);
//忽略合并过的单元格
boolean mergedCell = span[0] == 1 && span[1] == 1;
if (mergedCell) {
continue;
}
pCell.setRowspan(span[0]);
pCell.setColspan(span[1]);
}
table.addCell(pCell);
}
}
}
// 初始化PDF文档对象
createPdfTableAndWriteDocument(outStream, table);
}
/**
* 单元格转换，poi cell 转换为 itext cell
*
* @param sheet poi sheet页
* @param excelCell poi 单元格
* @param baseFont 基础字体
* @return com.itextpdf.text.pdf.PdfPCell
*/
private static PdfPCell excelCellToPdfCell(Sheet sheet, Cell excelCell, BaseFont baseFont) throws Exception {
if (Objects.isNull(excelCell)) {
return createPdfPCell(null, 0, 13f, null);
}
int rowIndex = excelCell.getRowIndex();
int columnIndex = excelCell.getColumnIndex();
// 图片信息
List<PicturesInfo> infos = getAllPictureInfos(sheet, rowIndex, rowIndex, columnIndex, columnIndex, false);
PdfPCell pCell;
if (CollUtil.isNotEmpty(infos)) {
pCell = new PdfPCell(Image.getInstance(infos.get(0).getPictureData()));
} else {
Font excelFont = getExcelFont(sheet, excelCell);
//设置单元格字体
com.itextpdf.text.Font pdFont = new com.itextpdf.text.Font(baseFont, excelFont.getFontHeightInPoints(), excelFont.getBold() ? 1 : 0, BaseColor.BLACK);
Integer border = hasBorder(excelCell) ? null : 0;
String excelCellValue = getExcelCellValue(excelCell);
pCell = createPdfPCell(excelCellValue, border, excelCell.getRow().getHeightInPoints(), pdFont);
}
// 水平居中
pCell.setHorizontalAlignment(getHorAlign(excelCell.getCellStyle().getAlignment().getCode()));
// 垂直对齐
pCell.setVerticalAlignment(getVerAlign(excelCell.getCellStyle().getVerticalAlignment().getCode()));
return pCell;
}
/**
* 创建pdf文档，并添加表格
*
* @param outStream 输出流，目标文档
* @param table 表格
* @throws DocumentException 异常信息
*/
private static void createPdfTableAndWriteDocument(OutputStream outStream, PdfPTable table) throws DocumentException {
//设置pdf纸张大小 PageSize.A4 A4横向
Document document = new Document(new RectangleReadOnly(842.0F, 595.0F));
PdfWriter.getInstance(document, outStream);
//设置页边距 宽
document.setMargins(10, 10, 10, 10);
document.open();
document.add(table);
document.close();
}
/**
* Excel文档输入流转换为对应的workbook及获取对应的sheet
*
* @param inputStream Excel文档输入流
* @param sheetNo sheet编号，默认0 第一个sheet
* @param excelSuffix 文件类型 .xls和.xlsx
* @return poi sheet
* @throws IOException 异常
*/
public static Sheet getPoiSheetByFileStream(InputStream inputStream, int sheetNo, String excelSuffix) throws IOException {
Workbook workbook;
if (excelSuffix.endsWith(".xls")) {
workbook = new HSSFWorkbook(inputStream);
} else {
workbook = new XSSFWorkbook(inputStream);
}
return workbook.getSheetAt(sheetNo);
}
/**
* 创建itext pdf 单元格
*
* @param content 单元格内容
* @param border 边框
* @param minimumHeight 高度
* @param pdFont 字体
* @return pdf cell
*/
private static PdfPCell createPdfPCell(String content, Integer border, Float minimumHeight, com.itextpdf.text.Font pdFont) {
String contentValue = content == null ? "" : content;
com.itextpdf.text.Font pdFontNew = pdFont == null ? new com.itextpdf.text.Font() : pdFont;
PdfPCell pCell = new PdfPCell(new Phrase(contentValue, pdFontNew));
if (Objects.nonNull(border)) {
pCell.setBorder(border);
}
if (Objects.nonNull(minimumHeight)) {
pCell.setMinimumHeight(minimumHeight);
}
return pCell;
}
/**
* excel垂直对齐方式映射到pdf对齐方式
*/
private static int getVerAlign(int align) {
switch (align) {
case 2:
return com.itextpdf.text.Element.ALIGN_BOTTOM;
case 3:
return com.itextpdf.text.Element.ALIGN_TOP;
default:
return com.itextpdf.text.Element.ALIGN_MIDDLE;
}
}
/**
* excel水平对齐方式映射到pdf水平对齐方式
*/
private static int getHorAlign(int align) {
switch (align) {
case 1:
return com.itextpdf.text.Element.ALIGN_LEFT;
case 3:
return com.itextpdf.text.Element.ALIGN_RIGHT;
default:
return com.itextpdf.text.Element.ALIGN_CENTER;
}
}
/*============================================== POI获取图片及文本内容工具方法 ==============================================*/
/**
* 获取字体
*
* @param sheet excel 转换的sheet页
* @param cell 单元格
* @return 字体
*/
private static Font getExcelFont(Sheet sheet, Cell cell) {
// xls
if (sheet instanceof HSSFSheet) {
Workbook workbook = sheet.getWorkbook();
return ((HSSFCell) cell).getCellStyle().getFont(workbook);
}
// xlsx
return ((XSSFCell) cell).getCellStyle().getFont();
}
/**
* 判断excel单元格是否有边框
*/
private static boolean hasBorder(Cell excelCell) {
short top = excelCell.getCellStyle().getBorderTop().getCode();
short bottom = excelCell.getCellStyle().getBorderBottom().getCode();
short left = excelCell.getCellStyle().getBorderLeft().getCode();
short right = excelCell.getCellStyle().getBorderRight().getCode();
return top + bottom + left + right > 2;
}
/**
* 判断单元格是否是合并单元格
*/
private static boolean isMergedRegion(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
return true;
}
}
}
return false;
}
/**
* 计算合并单元格合并的跨行跨列数
*/
private static int[] getMergedSpan(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
int[] span = {1, 1};
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress range = sheet.getMergedRegion(i);
int firstColumn = range.getFirstColumn();
int lastColumn = range.getLastColumn();
int firstRow = range.getFirstRow();
int lastRow = range.getLastRow();
if (firstColumn == column && firstRow == row) {
span[0] = lastRow - firstRow + 1;
span[1] = lastColumn - firstColumn + 1;
break;
}
}
return span;
}
/**
* 获取excel中每列宽度的占比
*/
private static float[] getColWidth(Sheet sheet) {
int rowNum = getMaxColRowNum(sheet);
Row row = sheet.getRow(rowNum);
int cellCount = row.getPhysicalNumberOfCells();
int[] colWidths = new int[cellCount];
int sum = 0;
for (int i = row.getFirstCellNum(); i < cellCount; i++) {
Cell cell = row.getCell(i);
if (cell != null) {
colWidths[i] = sheet.getColumnWidth(i);
sum += sheet.getColumnWidth(i);
}
}
float[] colWidthPer = new float[cellCount];
for (int i = row.getFirstCellNum(); i < cellCount; i++) {
colWidthPer[i] = (float) colWidths[i] / sum * 100;
}
return colWidthPer;
}
/**
* 获取excel中列数最多的行号
*/
private static int getMaxColRowNum(Sheet sheet) {
int rowNum = 0;
int maxCol = 0;
for (int r = sheet.getFirstRowNum(); r < sheet.getPhysicalNumberOfRows(); r++) {
Row row = sheet.getRow(r);
if (row != null && maxCol < row.getPhysicalNumberOfCells()) {
maxCol = row.getPhysicalNumberOfCells();
rowNum = r;
}
}
return rowNum;
}
/**
* poi 根据单元格类型获取单元格内容
*
* @param excelCell poi单元格
* @return 单元格内容文本
*/
public static String getExcelCellValue(Cell excelCell) {
if (excelCell == null) {
return "";
}
// 判断数据的类型
CellType cellType = excelCell.getCellType();
if (cellType == CellType.STRING) {
return excelCell.getStringCellValue();
}
if (cellType == CellType.BOOLEAN) {
return String.valueOf(excelCell.getBooleanCellValue());
}
if (cellType == CellType.FORMULA) {
return excelCell.getCellFormula();
}
if (cellType == CellType.NUMERIC) {
//short s = excelCell.getCellStyle().getDataFormat();
if (DateUtil.isCellDateFormatted(excelCell)) {// 处理日期格式、时间格式
SimpleDateFormat sdf;
// 验证short值
if (excelCell.getCellStyle().getDataFormat() == 14) {
sdf = new SimpleDateFormat("yyyy/MM/dd");
} else if (excelCell.getCellStyle().getDataFormat() == 21) {
sdf = new SimpleDateFormat("HH:mm:ss");
} else if (excelCell.getCellStyle().getDataFormat() == 22) {
sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
} else {
throw new RuntimeException("日期格式错误!!!");
}
Date date = excelCell.getDateCellValue();
return sdf.format(date);
} else if (excelCell.getCellStyle().getDataFormat() == 0) {
//处理数值格式
DataFormatter formatter = new DataFormatter();
return formatter.formatCellValue(excelCell);
}
}
if (cellType == CellType.ERROR) {
return "非法字符";
}
return "";
}
/**
* 获取sheet内的所有图片信息
*
* @param sheet sheet表
* @param onlyInternal 单元格内部
* @return 照片集合
* @throws Exception 异常
*/
public static List<PicturesInfo> getAllPictureInfos(Sheet sheet, boolean onlyInternal) throws Exception {
return getAllPictureInfos(sheet, null, null, null, null, onlyInternal);
}
/**
* 根据sheet和单元格信息获取图片
*
* @param sheet sheet表
* @param minRow 最小行
* @param maxRow 最大行
* @param minCol 最小列
* @param maxCol 最大列
* @param onlyInternal 是否内部
* @return 图片集合
* @throws Exception 异常
*/
public static List<PicturesInfo> getAllPictureInfos(Sheet sheet, Integer minRow, Integer maxRow, Integer minCol,
Integer maxCol, boolean onlyInternal) throws Exception {
if (sheet instanceof HSSFSheet) {
return getXLSAllPictureInfos((HSSFSheet) sheet, minRow, maxRow, minCol, maxCol, onlyInternal);
} else if (sheet instanceof XSSFSheet) {
return getXLSXAllPictureInfos((XSSFSheet) sheet, minRow, maxRow, minCol, maxCol, onlyInternal);
} else {
throw new Exception("未处理类型，没有为该类型添加：GetAllPicturesInfos()扩展方法！");
}
}
private static List<PicturesInfo> getXLSAllPictureInfos(HSSFSheet sheet, Integer minRow, Integer maxRow,
Integer minCol, Integer maxCol, Boolean onlyInternal) {
List<PicturesInfo> picturesInfoList = new ArrayList<>();
HSSFShapeContainer shapeContainer = sheet.getDrawingPatriarch();
if (shapeContainer == null) {
return picturesInfoList;
}
List<HSSFShape> shapeList = shapeContainer.getChildren();
for (HSSFShape shape : shapeList) {
if (shape instanceof HSSFPicture && shape.getAnchor() instanceof HSSFClientAnchor) {
HSSFPicture picture = (HSSFPicture) shape;
HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor();
if (isInternalOrIntersect(minRow, maxRow, minCol, maxCol, anchor.getRow1(), anchor.getRow2(),
anchor.getCol1(), anchor.getCol2(), onlyInternal)) {
HSSFPictureData pictureData = picture.getPictureData();
picturesInfoList.add(new PicturesInfo()
.setMinRow(anchor.getRow1())
.setMaxRow(anchor.getRow2())
.setMinCol(anchor.getCol1())
.setMaxCol(anchor.getCol2())
.setPictureData(pictureData.getData())
.setExt(pictureData.getMimeType()));
}
}
}
return picturesInfoList;
}
private static List<PicturesInfo> getXLSXAllPictureInfos(XSSFSheet sheet, Integer minRow, Integer maxRow,
Integer minCol, Integer maxCol, Boolean onlyInternal) {
List<PicturesInfo> picturesInfoList = new ArrayList<>();
List<POIXMLDocumentPart> documentPartList = sheet.getRelations();
for (POIXMLDocumentPart documentPart : documentPartList) {
if (documentPart instanceof XSSFDrawing) {
XSSFDrawing drawing = (XSSFDrawing) documentPart;
List<XSSFShape> shapes = drawing.getShapes();
for (XSSFShape shape : shapes) {
if (shape instanceof XSSFPicture) {
XSSFPicture picture = (XSSFPicture) shape;
XSSFClientAnchor anchor = picture.getPreferredSize();
if (isInternalOrIntersect(minRow, maxRow, minCol, maxCol, anchor.getRow1(), anchor.getRow2(),
anchor.getCol1(), anchor.getCol2(), onlyInternal)) {
XSSFPictureData pictureData = picture.getPictureData();
picturesInfoList.add(new PicturesInfo()
.setMinRow(anchor.getRow1())
.setMaxRow(anchor.getRow2())
.setMinCol(anchor.getCol1())
.setMaxCol(anchor.getCol2())
.setPictureData(pictureData.getData())
.setExt(pictureData.getMimeType()));
}
}
}
}
}
return picturesInfoList;
}
private static boolean isInternalOrIntersect(Integer rangeMinRow, Integer rangeMaxRow, Integer rangeMinCol,
Integer rangeMaxCol, int pictureMinRow, int pictureMaxRow, int pictureMinCol, int pictureMaxCol,
Boolean onlyInternal) {
int _rangeMinRow = rangeMinRow == null ? pictureMinRow : rangeMinRow;
int _rangeMaxRow = rangeMaxRow == null ? pictureMaxRow : rangeMaxRow;
int _rangeMinCol = rangeMinCol == null ? pictureMinCol : rangeMinCol;
int _rangeMaxCol = rangeMaxCol == null ? pictureMaxCol : rangeMaxCol;
if (onlyInternal) {
return (_rangeMinRow <= pictureMinRow && _rangeMaxRow >= pictureMaxRow && _rangeMinCol <= pictureMinCol
&& _rangeMaxCol >= pictureMaxCol);
} else {
return ((Math.abs(_rangeMaxRow - _rangeMinRow) + Math.abs(pictureMaxRow - pictureMinRow) >= Math
.abs(_rangeMaxRow + _rangeMinRow - pictureMaxRow - pictureMinRow))
&& (Math.abs(_rangeMaxCol - _rangeMinCol) + Math.abs(pictureMaxCol - pictureMinCol) >= Math
.abs(_rangeMaxCol + _rangeMinCol - pictureMaxCol - pictureMinCol)));
}
}
/**
* 图片基本信息
*/
private class PicturesInfo {
private int minRow;
private int maxRow;
private int minCol;
private int maxCol;
private String ext;
private byte[] pictureData;
public PicturesInfo() {
}
public byte[] getPictureData() {
return pictureData;
}
public PicturesInfo setPictureData(byte[] pictureData) {
this.pictureData = pictureData;
return this;
}
public int getMinRow() {
return minRow;
}
public PicturesInfo setMinRow(int minRow) {
this.minRow = minRow;
return this;
}
public int getMaxRow() {
return maxRow;
}
public PicturesInfo setMaxRow(int maxRow) {
this.maxRow = maxRow;
return this;
}
public int getMinCol() {
return minCol;
}
public PicturesInfo setMinCol(int minCol) {
this.minCol = minCol;
return this;
}
public int getMaxCol() {
return maxCol;
}
public PicturesInfo setMaxCol(int maxCol) {
this.maxCol = maxCol;
return this;
}
public String getExt() {
return ext;
}
public PicturesInfo setExt(String ext) {
this.ext = ext;
return this;
}
//有中间文件的 excel转pdf再加水印
// public static void main(String[] args) throws FileNotFoundException {
// String inputFile = "D:\\Downloads\\123.xlsx";
// String outputFile = "D:\\Downloads\\999.pdf";
// String watermarkedFile = "D:\\Downloads\\999_watermarked.pdf";
//
// // 获取inputFile的文件输出流
// FileInputStream fileInputStream = new FileInputStream(inputFile);
//
// try {
// // 创建输出流
// OutputStream outputStream = new FileOutputStream(outputFile);
//
// // 调用excelToPdf方法将Excel转换为PDF并写入输出流
// excelToPdf(fileInputStream, outputStream, "xlsx");
//
// //这个outputStream将里面的数据转成inputStream，后续要再做一次处理
//
//
// // 关闭输入流和输出流
// fileInputStream.close();
//
// //==============================加水印=================================
// // 创建输入流和输出流
// FileInputStream pdfInputStream = new FileInputStream(outputFile);
// ByteArrayOutputStream watermarkedOutputStream = PDFWatermarkExample.addWatermarkToPdfStream(pdfInputStream, "excel转PDF再加水印");
//
// // 将加水印后的PDF写入文件
// FileOutputStream watermarkedFileOutputStream = new FileOutputStream(watermarkedFile);
// watermarkedOutputStream.writeTo(watermarkedFileOutputStream);
//
// // 关闭输入流和输出流
// pdfInputStream.close();
// watermarkedOutputStream.close();
// watermarkedFileOutputStream.close();
//
//
// outputStream.close();
// } catch (Exception e) {
// e.printStackTrace();
// }
// }
/**
* 通过使用内存流，可以直接从Excel文件转换为带水印的PDF文件，而不需要生成中间文件。
* @param args
* @throws FileNotFoundException
*/
public static void main(String[] args) throws FileNotFoundException {
String inputFile = "D:\\Downloads\\123.xlsx";
String watermarkedFile = "D:\\Downloads\\999_watermarked.pdf";
try {
// 创建输入流
FileInputStream fileInputStream = new FileInputStream(inputFile);
// 创建输出流
ByteArrayOutputStream pdfOutputStream = new ByteArrayOutputStream();
// 调用excelToPdf方法将Excel转换为PDF并写入输出流
excelToPdf(fileInputStream, pdfOutputStream, "xlsx");
// 关闭输入流
fileInputStream.close();
//==============================加水印=================================
// 创建输入流
ByteArrayInputStream pdfInputStream = new ByteArrayInputStream(pdfOutputStream.toByteArray());
ByteArrayOutputStream watermarkedOutputStream = PDFWatermarkExample.addWatermarkToPdfStream(pdfInputStream, "excel转PDF再加水印");
// 将加水印后的PDF写入文件
FileOutputStream watermarkedFileOutputStream = new FileOutputStream(watermarkedFile);
watermarkedOutputStream.writeTo(watermarkedFileOutputStream);
// 关闭输入流和输出流
pdfInputStream.close();
watermarkedOutputStream.close();
watermarkedFileOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
最后的代码就是通过内存流做的，避免中间文件。哎 写这个真是麻烦
