调整项目模块，jodconverter-core重命名为office-plugin。jdocnverter-web重命名为server

2026-04-19 18:18:37 +00:00 · 2020-12-26 17:30:24 +08:00
parent 0f4f1d580b
commit 41cdc227b3
4382 changed files with 2240 additions and 83394 deletions
--- a/server/src/main/java/cn/keking/utils/PdfUtils.java
+++ b/server/src/main/java/cn/keking/utils/PdfUtils.java
@@ -0,0 +1,79 @@
+package cn.keking.utils;
+
+import cn.keking.service.FilePreviewCommonService;
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.rendering.ImageType;
+import org.apache.pdfbox.rendering.PDFRenderer;
+import org.apache.pdfbox.tools.imageio.ImageIOUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
+import java.util.ArrayList;
+import java.util.List;
+
+@Component
+public class PdfUtils {
+
+    private final Logger logger = LoggerFactory.getLogger(PdfUtils.class);
+
+    private final FilePreviewCommonService filePreviewCommonService;
+
+    @Value("${server.tomcat.uri-encoding:UTF-8}")
+    private String uriEncoding;
+
+    public PdfUtils(FilePreviewCommonService filePreviewCommonService) {
+        this.filePreviewCommonService = filePreviewCommonService;
+    }
+
+    public List<String> pdf2jpg(String pdfFilePath, String pdfName, String baseUrl) {
+        List<String> imageUrls = new ArrayList<>();
+        Integer imageCount = filePreviewCommonService.getConvertedPdfImage(pdfFilePath);
+        String imageFileSuffix = ".jpg";
+        String pdfFolder = pdfName.substring(0, pdfName.length() - 4);
+        String urlPrefix = null;
+        try {
+            urlPrefix = baseUrl + URLEncoder.encode(URLEncoder.encode(pdfFolder, uriEncoding).replaceAll("\\+", "%20"), uriEncoding);
+        } catch (UnsupportedEncodingException e) {
+            logger.error("UnsupportedEncodingException", e);
+            urlPrefix = baseUrl + pdfFolder;
+        }
+        if (imageCount != null && imageCount > 0) {
+            for (int i = 0; i < imageCount ; i++)
+            imageUrls.add(urlPrefix + "/" + i + imageFileSuffix);
+            return imageUrls;
+        }
+        try {
+            File pdfFile = new File(pdfFilePath);
+            PDDocument doc = PDDocument.load(pdfFile);
+            int pageCount = doc.getNumberOfPages();
+            PDFRenderer pdfRenderer = new PDFRenderer(doc);
+
+            int index = pdfFilePath.lastIndexOf(".");
+            String folder = pdfFilePath.substring(0, index);
+
+            File path = new File(folder);
+            if (!path.exists()) {
+                path.mkdirs();
+            }
+            String imageFilePath;
+            for (int pageIndex = 0; pageIndex < pageCount; pageIndex++) {
+                imageFilePath = folder + File.separator + pageIndex + imageFileSuffix;
+                BufferedImage image = pdfRenderer.renderImageWithDPI(pageIndex, 105, ImageType.RGB);
+                ImageIOUtil.writeImage(image, imageFilePath, 105);
+                imageUrls.add(urlPrefix + "/" + pageIndex + imageFileSuffix);
+            }
+            doc.close();
+            filePreviewCommonService.addConvertedPdfImage(pdfFilePath, pageCount);
+        } catch (IOException e) {
+            logger.error("Convert pdf to jpg exception, pdfFilePath：{}", pdfFilePath, e);
+        }
+        return imageUrls;
+    }
+}