<pdfbox.version>2.0.9</pdfbox.version>    
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            <dependency>
                <groupId>org.apache.pdfbox</groupId>
                <artifactId>pdfbox</artifactId>
                <version>${pdfbox.version}</version>
            </dependency>

        <dependency>
            <groupId>org.apache.pdfbox</groupId>
            <artifactId>pdfbox</artifactId>
        </dependency>

package com.le.common.utils;
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import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
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public class FileUtils {
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    /**
     * 獲取不帶擴(kuò)展名的文件名
     * @param fileName
     * @return
     */
    public static String getFileNameRemoveSuffix(String fileName) {
        int pos = fileName.lastIndexOf(".");
        if (pos > 0) {
            return fileName.substring(0, pos);
        }
        return fileName;
    }
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    /**
     * 遞歸刪除指定目錄及其內(nèi)容。
     *
     * @param directory 要?jiǎng)h除的目錄
     */
    public static void deleteDirectory(File directory) {
        File[] allContents = directory.listFiles();
        if (allContents != null) {
            for (File file : allContents) {
                deleteDirectory(file);
            }
        }
        directory.delete();
    }
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    /**
     * 將指定目錄中的圖像壓縮為zip文件，并將其寫入輸出流中。
     *
     * @param directory     包含圖像文件的目錄
     * @param outputStream  要寫入zip文件的輸出流
     * @throws IOException 如果發(fā)生I/O錯(cuò)誤
     */
    public static void zipImages(File directory, OutputStream outputStream) throws IOException {
        try (ZipOutputStream zipOut = new ZipOutputStream(outputStream)) {
            File[] imageFiles = directory.listFiles();
            if (imageFiles != null) {
                for (File imageFile : imageFiles) {
                    ZipEntry zipEntry = new ZipEntry(imageFile.getName());
                    zipOut.putNextEntry(zipEntry);
                    try (FileInputStream fis = new FileInputStream(imageFile)) {
                        byte[] bytes = new byte[1024];
                        int length;
                        while ((length = fis.read(bytes)) >= 0) {
                            zipOut.write(bytes, 0, length);
                        }
                    }
                }
            }
        }
    }
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    /**
     * 創(chuàng)建臨時(shí)文件
     * @return
     * @throws IOException
     */
    public static File createTempDirectory() throws IOException {
        File tempDir = File.createTempFile("temp", Long.toString(System.nanoTime()));
        if (!tempDir.delete() || !tempDir.mkdir()) {
            throw new IOException("Could not create temp directory: " + tempDir);
        }
        return tempDir;
    }
}

package com.le.common.utils;
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import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.ImageType;
import org.apache.pdfbox.rendering.PDFRenderer;
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import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.List;
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import org.apache.pdfbox.multipdf.Splitter;
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public class PdfUtils {
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    /**
     * 將PDF文件拆分為單獨(dú)的圖像，并將它們保存在指定的目錄中。
     * PDF的每一頁(yè)被轉(zhuǎn)換為一個(gè)單獨(dú)的圖像文件。
     *
     * @param inputPdfFile       要拆分的輸入PDF文件
     * @param outputImageDirectory 圖像文件將要保存的目錄
     * @throws IOException 如果發(fā)生I/O錯(cuò)誤
     */
    public static void splitPdfToImages(File inputPdfFile, File outputImageDirectory) throws IOException {
        try (PDDocument document = PDDocument.load(inputPdfFile)) {
            Splitter splitter = new Splitter();
            List<PDDocument> pages = splitter.split(document);
            int pageIndex = 1;
            for (PDDocument page : pages) {
                PDFRenderer renderer = new PDFRenderer(page);
                BufferedImage image = renderer.renderImageWithDPI(0, 300, ImageType.RGB);
                // 寫入圖像文件
                File outputImage = new File(outputImageDirectory, "page" + pageIndex + ".png");
                ImageIO.write(image, "png", outputImage);
                pageIndex++;
                page.close();
            }
        }
    }
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}

package com.le.admin.after.api.mytools;
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import com.le.common.utils.FileUtils;
import com.le.common.utils.PdfUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
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import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
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@RestController
@RequestMapping("/tools/pdf")
public class PdfToolController {
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    /**
     * pdf文件切割成圖片輸出
     * @param pdfFile
     * @return
     */
    @PostMapping("/pdfCutToImage")
    public ResponseEntity<byte[]> processPdf(@RequestParam("pdfFile") MultipartFile pdfFile) {
        try {
            File tempDir = FileUtils.createTempDirectory();
            File pdfInputFile = new File(tempDir, pdfFile.getOriginalFilename());
            pdfFile.transferTo(pdfInputFile);
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            // 將PDF文件拆分為單獨(dú)的圖像
            PdfUtils.splitPdfToImages(pdfInputFile, tempDir);
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            // 將圖像壓縮為zip文件
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            FileUtils.zipImages(tempDir, baos);
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            // 刪除臨時(shí)目錄及其內(nèi)容
            FileUtils.deleteDirectory(tempDir);
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            HttpHeaders headers = new HttpHeaders();
            headers.add("Content-Disposition", "attachment; filename=images.zip");
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            return ResponseEntity.ok()
                    .headers(headers)
                    .contentType(MediaType.parseMediaType("application/zip"))
                    .body(baos.toByteArray());
        } catch (IOException e) {
            e.printStackTrace();
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);
        }
    }
}