package com.ruoyi.common.utils;
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import com.itextpdf.text.DocumentException;
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import com.itextpdf.text.Image;
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import com.itextpdf.text.pdf.*;
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import com.ruoyi.common.utils.file.FileUtils;
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import com.spire.doc.Document;
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import com.spire.doc.FileFormat;
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import com.spire.pdf.PdfDocument;
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import com.spire.pdf.PdfDocumentBase;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.http.MediaType;
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import javax.imageio.ImageIO;
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import javax.servlet.http.HttpServletResponse;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.util.List;
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@Configuration
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@Slf4j
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public class MergeFilesToPDFUtils {
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@Value("${ruoyi.archived}")
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private String archived;
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/**
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* 将图片合成pdf
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*/
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public Boolean addImageToPdf(String imagePath, String pdfPath) throws IOException {
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com.itextpdf.text.Document document = new com.itextpdf.text.Document();
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try {
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PdfWriter.getInstance(document, new FileOutputStream(pdfPath));
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document.open();
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// 获取图像的宽度和高度
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BufferedImage image = ImageIO.read(new File(imagePath));
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float imageWidth = image.getWidth();
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float imageHeight = image.getHeight();
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// 获取页面的宽度和高度
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float pageWidth = document.getPageSize().getWidth();
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float pageHeight = document.getPageSize().getHeight();
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// 计算调整比例，确保图像适应页面
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float widthRatio = pageWidth / imageWidth;
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float heightRatio = pageHeight / imageHeight;
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float ratio = Math.min(widthRatio, heightRatio);
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// 计算调整后的图像大小
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float adjustedWidth = imageWidth * ratio - 50;
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float adjustedHeight = imageHeight * ratio - 50;
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// 创建图像对象
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Image pdfImage = Image.getInstance(imagePath);
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pdfImage.scaleAbsolute(adjustedWidth, adjustedHeight);
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// 添加图像到文档
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document.add(pdfImage);
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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document.close();
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}
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return true;
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}
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/**
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* WORD转PDF
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*
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* @param inputPath
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* @param outputPath
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*/
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public Boolean wordtoPdf(String inputPath, String outputPath) {
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Document doc = new Document();
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//加载Word
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doc.loadFromFile(inputPath);
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//保存为PDF格式
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doc.saveToFile(outputPath, FileFormat.PDF);
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return true;
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}
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/**
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* pdf合并
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*/
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public void mergePdfFiles(List<String> pdfFiles, String fileName) throws IOException, DocumentException {
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com.itextpdf.text.Document document = new com.itextpdf.text.Document();
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log.info("fileName的全路径：{}", archived + "/" + fileName);
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PdfCopy copy = new PdfCopy(document, new FileOutputStream(archived + "/" + fileName));
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document.open();
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for (String pdfFile : pdfFiles) {
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PdfReader reader = new PdfReader(pdfFile);
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int totalPages = reader.getNumberOfPages();
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for (int page = 1; page <= totalPages; page++) {
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PdfImportedPage importedPage = copy.getImportedPage(reader, page);
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copy.addPage(importedPage);
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}
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reader.close();
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}
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document.close();
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}
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}
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