java下载附件给(pdf、pptx、word、excel、图片)添加水印

使用组件 poi itext spire.xls ooxml-schemas twelvemonkeys.imageio 等

下载 pdf 含水印最好使用高版本

maven 配置

      <!-- pdf  --><itext.version>7.0.3</itext.version><!-- PDF --><dependency><groupId>com.itextpdf</groupId><artifactId>itext7-core</artifactId><version>${itext.version}</version><type>pom</type></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>kernel</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>io</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>layout</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>forms</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>pdfa</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>pdftest</artifactId><version>${itext.version}</version></dependency><dependency><groupId>com.itextpdf</groupId><artifactId>font-asian</artifactId><version>${itext.version}</version></dependency><!-- word --><dependency><groupId>e-iceblue</groupId><artifactId>spire.doc.free</artifactId><version>2.7.3</version></dependency><!-- excel  --><dependency><groupId>e-iceblue</groupId><artifactId>spire.xls.free</artifactId><version>2.2.0</version></dependency><dependency><groupId>e-iceblue</groupId><artifactId>spire.pdf.free</artifactId><version>2.2.2</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.15</version></dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.15</version></dependency><!-- ppt --><dependency><groupId>org.apache.poi</groupId><artifactId>ooxml-schemas</artifactId><version>1.0</version><exclusions><!--解决含嵌入文件ppt转换报错 ArrayStoreException--><exclusion><artifactId>xmlbeans</artifactId><groupId>org.apache.xmlbeans</groupId></exclusion></exclusions></dependency><dependency><groupId>com.twelvemonkeys.servlet</groupId><artifactId>servlet</artifactId><version>3.6</version></dependency><!-- 图片 --><!--twelvemonkeys图片处理--><dependency><groupId>com.twelvemonkeys.imageio</groupId><artifactId>imageio-jpeg</artifactId><version>3.6</version></dependency><dependency><groupId>com.twelvemonkeys.imageio</groupId><artifactId>imageio-tiff</artifactId><version>3.6</version></dependency><repositories><repository><id>com.e-iceblue</id><url>http://repo.e-iceblue.cn/repository/maven-public/</url></repository><repository><id>com.e-iceblue</id><url>http://repo.e-iceblue.com/nexus/content/groups/public/</url></repository></repositories>

代码工具类完成实现


package org.springblade.common.file;import com.github.xiaoymin.knife4j.annotations.ApiOperationSupport;
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.kernel.events.Event;
import com.itextpdf.kernel.events.IEventHandler;
import com.itextpdf.kernel.events.PdfDocumentEvent;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfPage;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.extgstate.PdfExtGState;
import com.itextpdf.layout.Canvas;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.property.TextAlignment;
import com.itextpdf.layout.property.VerticalAlignment;
import com.spire.doc.Document;
import com.spire.doc.FileFormat;
import com.spire.doc.Section;
import com.spire.doc.TextWatermark;
import com.spire.doc.documents.WatermarkLayout;
import io.swagger.annotations.ApiOperation;
import lombok.AllArgsConstructor;
import org.apache.poi.sl.usermodel.PictureData;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFPictureShape;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.poi.xssf.usermodel.XSSFRelation;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springblade.core.boot.ctrl.BladeController;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.ClassPathResource;
import org.springframework.web.bind.annotation.*;import javax.imageio.ImageIO;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.util.UUID;## downloadFile  方法为整体实现编写/*** 文件上传* @date 2021-05-19 11:02:20*/
@RestController
@RequestMapping("common/sysFile")
public class FileController extends BladeController {@ResponseBody@RequestMapping(value = "/download", method = RequestMethod.GET)public void downloadFile(@RequestParam("file") String fileName, HttpServletResponse response) throws ServletException, IOException {//获取文件后缀String prefix = fileName.substring((fileName.lastIndexOf(".") + 1));//这里文件名称是通过参数传递过来的，要是不需要，直接可以写在这里。String fileName = "a.doc";String path = "E://ChromeDownLoad//";  //这里指定路径在C盘根目录，按需改动即可FileInputStream fis = null;BufferedInputStream bis = null;ByteArrayOutputStream baos =null;XSSFWorkbook workbook = null;Document document = null;XMLSlideShow slideShow = null;FileOutputStream outImgStream = null;try {if(prefix.equals("pdf")) {File file = new File(path, fileName);response.setContentType("application/x-download;charset=UTF-8");fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");response.addHeader("Content-Disposition", "attachment; filename = " + fileName);fis = new FileInputStream(file);bis = new BufferedInputStream(fis);baos = new ByteArrayOutputStream();PdfReader readerInfo = new PdfReader(fis);PdfDocument docInfo = new PdfDocument(readerInfo, new PdfWriter(baos));//中文字体File tempFile = File.createTempFile(UUID.randomUUID().toString().replaceAll("-", ""), ".otf");InputStream input = new ClassPathResource("NotoSerifCJKsc.otf").getInputStream();Files.copy(input, tempFile.toPath(), StandardCopyOption.REPLACE_EXISTING);String fontPath = tempFile.getAbsolutePath();addWater(docInfo, fontPath);// 5.关闭文档docInfo.close();readerInfo.close();ServletOutputStream fos = response.getOutputStream();fos.write(baos.toByteArray());fos.flush();fos.close();}if(prefix.equals("doc")||prefix.equals("docx")){// 生成word添加水印文件存储到指定目录File file = new File(path, fileName);document = new Document();document.loadFromFile(file.toString());InsertTextWatermark(document.getSections().get(0));document.saveToFile("D://ChromeDownLoad//"+file.getName(), FileFormat.Docx );// 从存得的目录中取出并下载String pathDOC = "D://ChromeDownLoad//";File fileS = new File(pathDOC, file.getName());response.setContentType("application/octet-stream;charset=UTF-8");String fileNamedoc = new String(fileS.getName().getBytes("UTF-8"), "iso-8859-1");response.addHeader("Content-Disposition", "attachment; filename = " + fileNamedoc);fis = new FileInputStream(fileS);bis = new BufferedInputStream(fis);BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());byte[] buf = new byte[4096];int length = bis.read(buf);//保存文件while(length != -1){bos.write(buf, 0, length);length = bis.read(buf);}bos.flush();bos.close();bis.close();}if(prefix.equals("xls")||prefix.equals("xlsx")){File file = new File(path, fileName);//读取excel文件workbook = new XSSFWorkbook(new FileInputStream(file));OutputStream fos = null;ByteArrayOutputStream os = null;//获取水印os = getImage("测试水印成功");int pictureIdx = workbook.addPicture(os.toByteArray(), Workbook.PICTURE_TYPE_PNG);for (int i = 0; i < workbook.getNumberOfSheets(); i++) {//获取每个Sheet表XSSFSheet sheet1 = workbook.getSheetAt(i);String rID = sheet1.addRelation(null, XSSFRelation.IMAGES, workbook.getAllPictures().get(pictureIdx)).getRelationship().getId();sheet1.getCTWorksheet().addNewPicture().setId(rID);}// Excel文件生成后存储的位置。File fileExcel = new File("D://ChromeDownLoad//"+file.getName());fos = new FileOutputStream(fileExcel);workbook.write(fos);// 从存得的目录中取出并下载response.setContentType("application/octet-stream;charset=UTF-8");String fileNamedoc = new String(fileExcel.getName().getBytes("UTF-8"), "iso-8859-1");response.addHeader("Content-Disposition", "attachment; filename = " + fileNamedoc);fis = new FileInputStream(fileExcel);bis = new BufferedInputStream(fis);BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());byte[] buf = new byte[4096];int length = bis.read(buf);//保存文件while(length != -1){bos.write(buf, 0, length);length = bis.read(buf);}bos.flush();bos.close();bis.close();}if(prefix.equals("ppt")||prefix.equals("pptx")){File file = new File(path, fileName);slideShow = new XMLSlideShow(new FileInputStream(file));ByteArrayOutputStream os = null;FileOutputStream out = null;//获取水印os = getImage("测试水印成功");PictureData pictureData1 = slideShow.addPicture(os.toByteArray(), PictureData.PictureType.PNG);for (XSLFSlide slide : slideShow.getSlides()) {XSLFPictureShape pictureShape = slide.createPicture(pictureData1);pictureShape.setAnchor(pictureShape.getAnchor());}// Excel文件生成后存储的位置。File fileExcel = new File("D://ChromeDownLoad//"+file.getName());out = new FileOutputStream(fileExcel);slideShow.write(out);// 从存得的目录中取出并下载response.setContentType("application/octet-stream;charset=UTF-8");String fileNamedoc = new String(fileExcel.getName().getBytes("UTF-8"), "iso-8859-1");response.addHeader("Content-Disposition", "attachment; filename = " + fileNamedoc);fis = new FileInputStream(fileExcel);bis = new BufferedInputStream(fis);BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());byte[] buf = new byte[4096];int length = bis.read(buf);//保存文件while(length != -1){bos.write(buf, 0, length);length = bis.read(buf);}bos.flush();bos.close();bis.close();}if(prefix.equals("jpg")){// 读取原图片信息File srcImgFile = new File(path, fileName);Image srcImg = ImageIO.read(srcImgFile);int srcImgWidth = srcImg.getWidth(null);int srcImgHeight = srcImg.getHeight(null);// 加水印BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);Graphics2D g = bufImg.createGraphics();g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);Font font = new Font("宋体", Font.BOLD, srcImgHeight / 6);//根据图片的背景设置水印颜色g.setColor(Color.GRAY);//设置旋转角度g.rotate(Math.toRadians(-45), (double) bufImg.getWidth() / 2, (double) bufImg.getHeight() / 2);//设置水印透明度g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.2F));g.setFont(font);int x = (srcImgWidth - getWatermarkLength("测试水印成功", g)) / 2;int y = srcImgHeight / 2;g.drawString("测试水印成功", x, y);g.dispose();// Excel文件生成后存储的位置。File fileExcel = new File("D://ChromeDownLoad//"+srcImgFile.getName());// 输出图片outImgStream = new FileOutputStream(fileExcel);ImageIO.write(bufImg, "jpg", outImgStream);outImgStream.flush();outImgStream.close();// 从存得的目录中取出并下载response.setContentType("application/octet-stream;charset=UTF-8");String fileNamedoc = new String(fileExcel.getName().getBytes("UTF-8"), "iso-8859-1");response.addHeader("Content-Disposition", "attachment; filename = " + fileNamedoc);fis = new FileInputStream(fileExcel);bis = new BufferedInputStream(fis);BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());byte[] buf = new byte[4096];int length = bis.read(buf);//保存文件while(length != -1){bos.write(buf, 0, length);length = bis.read(buf);}bos.flush();bos.close();bis.close();}} catch (FileNotFoundException e) {e.printStackTrace();System.out.println("The file not found!");} catch (IOException e) {e.printStackTrace();} finally {if (baos!=null){try {baos.close();} catch (IOException e) {e.printStackTrace();}}if (bis != null) {try {bis.close();} catch (IOException e) {e.printStackTrace();}}if (fis != null) {try {fis.close();} catch (IOException e) {e.printStackTrace();}}if (document != null) {try {document.close();} catch (Exception e) {e.printStackTrace();}}if (workbook != null) {try {workbook.close();} catch (IOException e) {e.printStackTrace();}}if (slideShow != null) {try {slideShow.close();} catch (IOException e) {e.printStackTrace();}}if (outImgStream != null) {try {outImgStream.close();} catch (IOException e) {e.printStackTrace();}}}}## 以下方法 为一些工具方法可直接嵌入使用/*** 图片添加水印** @param srcImgPath       需要添加水印的图片的路径* @param outImgPath       添加水印后图片输出路径* @param markContentColor 水印文字的颜色* @param waterMarkContent 水印的文字*/public static void setPictureWatermark(String srcImgPath, String outImgPath, Color markContentColor, String waterMarkContent) {FileOutputStream outImgStream = null;try {// 读取原图片信息File srcImgFile = new File(srcImgPath);Image srcImg = ImageIO.read(srcImgFile);int srcImgWidth = srcImg.getWidth(null);int srcImgHeight = srcImg.getHeight(null);// 加水印BufferedImage bufImg = new BufferedImage(srcImgWidth, srcImgHeight, BufferedImage.TYPE_INT_RGB);Graphics2D g = bufImg.createGraphics();g.drawImage(srcImg, 0, 0, srcImgWidth, srcImgHeight, null);Font font = new Font("宋体", Font.BOLD, srcImgHeight / 6);//根据图片的背景设置水印颜色g.setColor(markContentColor);//设置旋转角度g.rotate(Math.toRadians(-45), (double) bufImg.getWidth() / 2, (double) bufImg.getHeight() / 2);//设置水印透明度g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.2F));g.setFont(font);int x = (srcImgWidth - getWatermarkLength(waterMarkContent, g)) / 2;int y = srcImgHeight / 2;g.drawString(waterMarkContent, x, y);g.dispose();// 输出图片outImgStream = new FileOutputStream(outImgPath);ImageIO.write(bufImg, "jpg", outImgStream);outImgStream.flush();outImgStream.close();} catch (Exception e) {e.printStackTrace();} finally {if (outImgStream != null) {try {outImgStream.close();} catch (IOException e) {e.printStackTrace();}}}}/*** 获取水印文字总长度** @param waterMarkContent 水印的文字* @param g* @return 水印文字总长度*/public static int getWatermarkLength(String waterMarkContent, Graphics2D g) {return g.getFontMetrics(g.getFont()).charsWidth(waterMarkContent.toCharArray(), 0, waterMarkContent.length());}/*** 获取水印文字图片流** @param text* @return*/private static ByteArrayOutputStream getImage(String text) {ByteArrayOutputStream os = new ByteArrayOutputStream();try {// 导出到字节流BBufferedImage image = createWaterMarkImageBig(text);ImageIO.write(image, "png", os);} catch (IOException e) {e.printStackTrace();}return os;}/*** 根据文字生成水印图片（大号 平铺）** @param text* @return*/public static BufferedImage createWaterMarkImageBig(String text) {Integer width = 1000;Integer height = 800;BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);// 获取bufferedImage对象Font font = new Font("宋体", Font.PLAIN, 70);Graphics2D g2d = image.createGraphics();image = g2d.getDeviceConfiguration().createCompatibleImage(width, height, Transparency.TRANSLUCENT);g2d.dispose();g2d = image.createGraphics();//设置字体颜色和透明度g2d.setColor(new Color(0, 0, 0, 60));//设置字体g2d.setStroke(new BasicStroke(1));//设置字体类型  加粗 大小g2d.setFont(font);//设置倾斜度g2d.rotate(Math.toRadians(-30), (double) image.getWidth() / 2, (double) image.getHeight() / 2);FontRenderContext context = g2d.getFontRenderContext();Rectangle2D bounds = font.getStringBounds(text, context);double x = (width - bounds.getWidth()) / 2;double y = (height - bounds.getHeight()) / 2;double ascent = -bounds.getY();double baseY = y + ascent;//写入水印文字原定高度过小，所以累计写水印，增加高度g2d.drawString(text, (int) x, (int) baseY);//设置透明度g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));//释放对象g2d.dispose();return image;}/*** 自定义方法插入文本水印并格式水印效果* word*/private static void InsertTextWatermark(Section section){TextWatermark txtWatermark = new TextWatermark();txtWatermark.setText("添加水印成功");txtWatermark.setFontSize(40);txtWatermark.setColor(Color.LIGHT_GRAY);txtWatermark.setLayout(WatermarkLayout.Diagonal);section.getDocument().setWatermark(txtWatermark);}/*** PDF* @param docInfo*/private static void addWater(PdfDocument docInfo,String path){docInfo.addEventHandler(PdfDocumentEvent.END_PAGE, new IEventHandler() {@Overridepublic void handleEvent(Event event) {PdfDocumentEvent docEvent = (PdfDocumentEvent) event;PdfDocument pdfDoc = docEvent.getDocument();PdfPage page = docEvent.getPage();PdfFont font = null;try {font = PdfFontFactory.createFont(path, PdfEncodings.IDENTITY_H, false);} catch (IOException e) {e.printStackTrace();}PdfCanvas canvas = new PdfCanvas(page);PdfExtGState gs1 = new PdfExtGState();gs1.setFillOpacity(0.10f); // 水印透明度canvas.setExtGState(gs1);new Canvas(canvas, pdfDoc, page.getPageSize()).setFontSize(60).setFont(font).showTextAligned(new Paragraph("添加水印成功"), 298, 421,pdfDoc.getPageNumber(page), TextAlignment.CENTER, VerticalAlignment.MIDDLE, 45);}});}}

另 PDF 添加水印时需要中文字体设置，我这引入俩个文件可直接拷贝到 resource 下

需文件： FZSSJW.TTF
NotoSerifCJKsc.otf

链接：https://pan.baidu.com/s/1XniiJUQHFzlfRxbzNMPDVg
提取码：lgm9

以上就是添加水印的整体实现方法，这种实现可能有些冗余，还需各位大佬提出宝贵建议，简化方法进行实现。

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java下载附件给(pdf、pptx、word、excel、图片)添加水印

java下载附件给(pdf、pptx、word、excel、图片)添加水印

maven 配置

代码工具类完成实现

另 PDF 添加水印时需要中文字体设置，我这引入俩个文件可直接拷贝到 resource 下

java下载附件给(pdf、pptx、word、excel、图片)添加水印相关推荐

最新文章

热门文章

java下载附件给(pdf、pptx、word、excel、图片)添加水印

java下载附件给(pdf、pptx、word、excel、图片)添加水印

maven 配置

代码工具类 完成实现

另 PDF 添加水印时 需要中文字体 设置 ，我这引入俩个文件 可直接拷贝到 resource 下

java下载附件给(pdf、pptx、word、excel、图片)添加水印相关推荐

最新文章

热门文章

代码工具类完成实现

另 PDF 添加水印时需要中文字体设置，我这引入俩个文件可直接拷贝到 resource 下