java拆解多页pdf

您可以使用Java的PDFBox库来拆解多页PDF。以下是一个简单的示例代码，可以将每一页保存为单独的PDF文件：

import java.io.File;
import java.io.IOException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;

public class PDFSplitter {
    public static void main(String[] args) throws IOException {
        // Load the PDF document
        PDDocument document = PDDocument.load(new File("input.pdf"));

        // Get the number of pages in the document
        int pageCount = document.getNumberOfPages();

        // Create a PDFRenderer object to render each page
        PDFRenderer renderer = new PDFRenderer(document);

        // Loop through each page and save it as a separate PDF file
        for (int i = 0; i < pageCount; i++) {
            String fileName = "page_" + (i + 1) + ".pdf";
            renderer.renderPageToPDF(i, fileName);
        }

        // Close the document
        document.close();
    }
}