超凡网络网站,邢台163信息网,什么网站上做奥数题,ppt代做网站该方法可以选择多个图片是否合并为一个pdf输出#xff0c;也可以选择图片为横向或者纵向输出#xff0c;也可以选择pdf页面为A3或者A4
第一步 dependencygroupIdorg.apache.pdfbox/groupIdartifactIdpdfbox/artifactIdversion…该方法可以选择多个图片是否合并为一个pdf输出也可以选择图片为横向或者纵向输出也可以选择pdf页面为A3或者A4
第一步 dependencygroupIdorg.apache.pdfbox/groupIdartifactIdpdfbox/artifactIdversion2.0.24/version/dependency
第二步
package com.example.demo.file.pdf;import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;public class ImageConditionToPdfConverter {private static final ListString SUPPORTED_IMAGE_SUFFIXES Arrays.asList(png, jpg, jpeg, gif, bmp, tiff);public static void main(String[] args) {String imagesFolder C:\\Users\\EDY\\Desktop\\测试图片; // 图片文件夹路径String outputFolder C:\\Users\\EDY\\Desktop\\output; // 输出PDF文件夹路径boolean mergePdf true; // 是否将所有图片合并到同一个PDF文件中boolean landscape false; // 图片布局方向横向为true纵向为falseString pageSize A4; // 页面大小可以是A3或A4ListFile imageFiles getImageFiles(imagesFolder, SUPPORTED_IMAGE_SUFFIXES);ensureOutputDirectoryExists(outputFolder); // 确保输出目录存在try {if (mergePdf) {// 如果合并到同一个PDF创建一个文档并添加所有页面PDDocument document new PDDocument();for (File imageFile : imageFiles) {PDPage page createPage(pageSize, landscape);document.addPage(page);PDImageXObject pdImage PDImageXObject.createFromFile(String.valueOf(imageFile), document);PDPageContentStream contentStream new PDPageContentStream(document, page);drawImage(contentStream, pdImage, page.getMediaBox(), landscape);contentStream.close();}document.save(outputFolder \\output.pdf);document.close();} else {// 如果不合并到同一个PDF为每个图片创建一个文档for (File imageFile : imageFiles) {PDDocument document new PDDocument();PDPage page createPage(pageSize, landscape);document.addPage(page);PDImageXObject pdImage PDImageXObject.createFromFile(String.valueOf(imageFile), document);PDPageContentStream contentStream new PDPageContentStream(document, page);drawImage(contentStream, pdImage, page.getMediaBox(), landscape);contentStream.close();document.save(outputFolder \\output_ imageFiles.indexOf(imageFile) .pdf);document.close();}}System.out.println(PDF created successfully!);} catch (IOException e) {e.printStackTrace();}}private static PDPage createPage(String pageSize, boolean landscape) {PDRectangle mediaBox A3.equalsIgnoreCase(pageSize) ? PDRectangle.A3 : PDRectangle.A4;PDPage page new PDPage(mediaBox);if (landscape) {page.setRotation(90);}return page;}private static void drawImage(PDPageContentStream contentStream, PDImageXObject pdImage, PDRectangle mediaBox, boolean landscape) throws IOException {float imageWidth pdImage.getWidth();float imageHeight pdImage.getHeight();float pageWidth mediaBox.getWidth();float pageHeight mediaBox.getHeight();if (landscape) {float temp pageWidth;pageWidth pageHeight;pageHeight temp;}float scale Math.min(pageWidth / imageWidth, pageHeight / imageHeight);imageWidth * scale;imageHeight * scale;// Center the image on the pagefloat x (pageWidth - imageWidth) / 2;float y (pageHeight - imageHeight) / 2;contentStream.drawImage(pdImage, x, y, imageWidth, imageHeight);}private static ListFile getImageFiles(String folderPath, ListString supportedSuffixes) {File folder new File(folderPath);File[] files folder.listFiles();if (files ! null) {ListFile imageFiles new ArrayList();for (File file : files) {if (file.isFile() isImage(file, supportedSuffixes)) {imageFiles.add(file);}}return imageFiles;}return new ArrayList();}private static boolean isImage(File file, ListString supportedSuffixes) {String fileName file.getName().toLowerCase();return supportedSuffixes.stream().anyMatch(fileName::endsWith);}private static void ensureOutputDirectoryExists(String directoryPath) {File directory new File(directoryPath);if (!directory.exists()) {directory.mkdirs();}}
}
