Java使用iText PDF按页(逐页、单页)拆分PDF

今天药忘吃喽~ 2024-03-30 16:39 75阅读 0赞

#### 1 配置pom文件 ####

我用的是5.4.3的版本

> <dependency>  
> <groupId>com.itextpdf</groupId>  
> <artifactId>itextpdf</artifactId>  
> <version>5.4.3</version>  
> </dependency>

2 按页(逐页、单页)拆分PDF代码

/**
     * @author Reverse_XML
     * 把PDF 按页(逐页、单页)拆分(一页一页拆分，一页为一个新PDF文件)
     * @param path 源PDF路径
     * @param fileName 源PDF文件名
     * @param outputPath 拆分后输出的PDF路径
     */
    public static void splitPDFOneByOne(String path, String fileName, String outputPath) {
        String sep = java.io.File.separator;
        PdfReader reader = null;
        int numberOfPages = 0;
        try {
            reader = new PdfReader(path + sep + fileName);
            numberOfPages = reader.getNumberOfPages();
            for (int i = 1; i <= numberOfPages; i++) {
                Document document = null;
                PdfCopy copy = null;
                try {
                    document = new Document(reader.getPageSize(1));
                    String savePath = outPath + sep +
                            fileName.substring(0, fileName.lastIndexOf(".")) + "_" + i + ".pdf";
                    copy = new PdfCopy(document, new FileOutputStream(savePath));
                    document.open();
                    document.newPage();
                    PdfImportedPage page = copy.getImportedPage(reader, i);
                    copy.addPage(page);
                } finally {
                    if (document != null)
                        document.close();
                    if (copy != null)
                        copy.close();
                }
            }
        } catch (IOException e) {
            log.error(e.getMessage(), e);
        } catch (DocumentException e) {
            log.error(e.getMessage(), e);
        } finally {
            if (reader != null)
                reader.close();
        }
    }

3 调用示例

将指定的PDF逐页拆分(一页一页拆分，一页为一个新的PDF)

public static void main(String[] args) {
        try {
            PDFUtils.splitPDFOneByOne("D:\\inputPath", "test.pdf", "D:\\outputPath");
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
    }