Question

我正在使用PDFRenderer.jar，这是我用来设置打印格式的方法，

private void initialize(byte[] pdfContent, String jobName) throws IOException, PrinterException {
        ByteBuffer bb = ByteBuffer.wrap(pdfContent);
        // Create PDF Print Page
        PDFFile pdfFile = new PDFFile(bb);
        PDFPrintPage pages = new PDFPrintPage(pdfFile);

        // Create Print Job
        pjob = PrinterJob.getPrinterJob();
        PageFormat pf = PrinterJob.getPrinterJob().defaultPage();

        pf.setOrientation(PageFormat.PORTRAIT);
        pjob.setJobName(jobName);

        Book book = new Book();
        book.append(pages, pf, pdfFile.getNumPages());
        pjob.setPageable(book);

//         to remove margins
        Paper paper = new Paper();
        paper.setSize(paper.getWidth(), paper.getHeight());
        paper.setImageableArea(0, 0, paper.getWidth(), paper.getHeight());

        pf.setPaper(paper);
    }

问题是，方向 PORTRAIT 仅设置为pdf的第一页，第二页提供 REVERSE_LANDSCAPE ，我没有从代码中设置。

有什么想法吗？

Answer 1

最后，我发现了它

我们无法仅将设置属性设置为java.awt.print.PageFormat来设置打印格式，我们必须覆盖print(Graphics g, PageFormat format, int index)中的java.awt.print.Printable方法。这会使文件以pdf格式打印（文本和对齐）。

因此，这是重写的打印方法，

  public int print(Graphics g, PageFormat format, int index) throws PrinterException {
        int pagenum = index + 1;
        if ((pagenum >= 1) && (pagenum <= file.getNumPages())) {
            Graphics2D g2 = (Graphics2D) g;
            PDFPage page = file.getPage(pagenum);

            // fit the PDFPage into the printing area
            Rectangle imageArea = new Rectangle((int) format.getImageableX(), (int) format.getImageableY(),
                    (int) format.getImageableWidth(), (int) format.getImageableHeight());
            g2.translate(0, 0);
            PDFRenderer pgs = new PDFRenderer(page, g2, imageArea, null, null);
            try {
                page.waitForFinish();
                pgs.run();
            } catch (InterruptedException ie) {
                // nothing to do
            }
            return PAGE_EXISTS;
        } else {
            return NO_SUCH_PAGE;
        }
    }

因此，这里是使用pdf渲染器打印pdf的完整代码（对于打印机不支持直接打印），

    public static void main(String[] args) throws IOException, PrinterException {
    if (args.length != 1) {
        System.err.println("The first parameter must have the location of the PDF file to be printed");
    }

    FileInputStream fis = new FileInputStream(new File("x.pdf"));//file path

    PrintPdf printPDFFile = new PrintPdf(fis, "Test Print PDF");
    printPDFFile.print();
}

public static PrintService setPrintService(String argPrintServiceName) throws PrinterException {
    PrintService psr = null;
    PrintService[] printServices = PrinterJob.lookupPrintServices();
    int i;
    for (i = 0; i < printServices.length; i++) {
        if (printServices[i].getName().equalsIgnoreCase(argPrintServiceName)) {
            psr = printServices[i];
            break;
        }
    }
    if (i == printServices.length) {
        throw new PrinterException("Invalid print service name: " + argPrintServiceName);
    }
    return psr;
}

/**
 * Constructs the print job based on the input stream
 *
 * @param inputStream
 * @param jobName
 * @throws IOException
 * @throws PrinterException
 */
public PrintPdf(InputStream inputStream, String jobName) throws IOException, PrinterException {
    byte[] pdfContent = new byte[inputStream.available()];
    inputStream.read(pdfContent, 0, inputStream.available());
    initialize(pdfContent, jobName);
}

/**
 * Initializes the job
 *
 * @param pdfContent
 * @param jobName
 * @throws IOException
 * @throws PrinterException
 */
private void initialize(byte[] pdfContent, String jobName) throws IOException, PrinterException {
    ByteBuffer bb = ByteBuffer.wrap(pdfContent);
    /* Create PDF Print Page*/
    PDFFile pdfFile = new PDFFile(bb);
    PDFPrintPage pages = new PDFPrintPage(pdfFile);

    /* Create Print Job  */
    pjob = PrinterJob.getPrinterJob();
    pf = PrinterJob.getPrinterJob().defaultPage();

    pf.setOrientation(PageFormat.PORTRAIT);
    pjob.setJobName(jobName);

    Book book = new Book();
    book.append(pages, pf, pdfFile.getNumPages());
    pjob.setPageable(book);

    /* to remove margins  */
    Paper paper = new Paper();
    paper.setImageableArea(0, 0, paper.getWidth(), paper.getHeight());

    pf.setPaper(paper);
}

public void print() throws PrinterException {
    // Send print job to default printer
    pjob.print();
}

/**
 * Class that actually converts the PDF file into Printable format
 */
class PDFPrintPage implements Printable {

    private PDFFile file;

    PDFPrintPage(PDFFile file) {
        this.file = file;
    }

    public int print(Graphics g, PageFormat format, int index) throws PrinterException {
        int pagenum = index + 1;
        if ((pagenum >= 1) && (pagenum <= file.getNumPages())) {
            Graphics2D g2 = (Graphics2D) g;
            PDFPage page = file.getPage(pagenum);

            // fit the PDFPage into the printing area
            Rectangle imageArea = new Rectangle((int) format.getImageableX(),(int)format.getImageableY(),(int) format.getImageableWidth(), (int) format.getImageableHeight());
            g2.translate(0, 0);
            PDFRenderer pgs = new PDFRenderer(page, g2, imageArea, null, null);
            try {
                page.waitForFinish();
                pgs.run();
            } catch (InterruptedException ie) {
                // nothing to do
            }
            return PAGE_EXISTS;
        } else {
            return NO_SUCH_PAGE;
        }
    }

}

感谢任何试图找到错误的人和我的高级工程师给予他支持以找到这个。

方向设置仅适用于PDF打印中的第一页 - java

1 个答案: