java - 使用java在网络打印机中打印pdf

Question

伙计们，我一直在使用 java 打印 pdf。我写的代码如下:

`

public static void main(String[] args) throws PrinterException, PrintException, IOException{
        DocFlavor docflavor = new DocFlavor.INPUT_STREAM ("application/octet-stream");
    //  DocFlavor docflavor = DocFlavor.SERVICE_FORMATTED.PAGEABLE;
/*      DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.;*/
        PrintService printService = PrintServiceLookup.lookupDefaultPrintService();
        DocFlavor[] docF = printService.getSupportedDocFlavors();
        for(int i = 0; i<docF.length;i++){
            System.out.println(docF[i]);
        }
        FileInputStream fis = new FileInputStream("pathofpdffile");



        Doc pdfDoc = new SimpleDoc(fis, docflavor, null);


        DocPrintJob printJob = printService.createPrintJob();
        PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();

        aset.add(new Copies(1));
        aset.add(Sides.ONE_SIDED);
        printJob.print(pdfDoc,aset);

        fis.close();

}`

上面的代码启动了打印 Activity ，但问题是我在打印时只得到了编码字符。我无法获得我的确切文件。

其次，如果我将 DocFlavor 更改为 SERVICE_FORMATTED.PAGEABLE，它会抛出错误

java.lang.IllegalArgumentException: data is not of declared type
at javax.print.SimpleDoc.<init>(Unknown Source)
at com.calculator.main.PrintingTest.main(PrintingTest.java:42)

第三，如果我将 DocFlavor 更改为 INPUT_STREAM.PDF，它会抛出错误

`Exception in thread "main" sun.print.PrintJobFlavorException: invalid flavor
at sun.print.Win32PrintJob.print(Unknown Source)
at com.calculator.main.PrintingTest.main(PrintingTest.java:49)`

我正在网络打印机上尝试所有这些。任何帮助都会 gr8..

Answer 1

只需更改您的代码以使用 AUTO_SENSE，如下所示。

InputStream inputStream = new FileInputStream("C://test.pdf");
Doc doc = new SimpleDoc(inputStream, DocFlavor.INPUT_STREAM.AUTOSENSE,null);