Question

我正在尝试将一个简单的pdf文件打印到在CUPS上注册的远程打印机上，并且该打印机不打印文本，而是打印类似Webdings的字符，即使pdf文件仅包含一个“ hello世界”字符串，它可以打印许多页（10页）。我的猜测是打印机正在打印ByteStream。我是javax的新手，所以它可能是一个愚蠢的错误，但是我进行了很多搜索并尝试了多种解决方案。

public class PrintTest2 {
public static void main(String[] args) throws Exception{
    try {
        DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
        PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
        PrintServiceAttributeSet aset2 = new HashPrintServiceAttributeSet();
        aset.add(new Copies(2));
        aset2.add(new PrinterURI(new URI("ipp://hostname/printers/PRINTER_NAME")));

        PrintService[] printServices = PrintServiceLookup.lookupPrintServices(flavor,aset2);
        for(PrintService printService: printServices){
            System.out.println(printService.getName());
        }

        PrintService service = PrintServiceLookup.lookupPrintServices(flavor,aset2)[3];
        System.out.println(service.getName());

        // Create the print job
        DocPrintJob job = service.createPrintJob();
        InputStream in = new FileInputStream("MyPath\\test.pdf.lnk");
        Doc doc = new SimpleDoc(in, flavor,null);
        job.print(doc, aset);
    } //catch (PrintException e) {
    //}
    catch (IOException e) {
    }
}}

我试图将bufferredreader传递给SimpleDoc构造函数，例如：

Doc doc = new SimpleDoc(new BufferedReader(new InputstreamReader(in, "UTF-8")), flavor,null);

但随后引发了以下异常：

Exception in thread "main" java.lang.IllegalArgumentException: data is not of declared type

为解决此问题，我尝试将DocFlavor更改为DocFlavor.INPUT_STREAM.BYTE_ARRAY.AUTOSENSE

没有任何改变。

我还尝试了cups4j文档中的以下代码，但它也打印了火星字符集，并且“副本”属性不起作用，并且用尽了所有打印机纸张。

public static void main(String[] args) throws Exception{
    CupsClient cupsClient = new CupsClient(hostname, 631);
    CupsPrinter cupsPrinter = cupsClient.getPrinters().get(2); // Maybe it's bad practice, but I wanted the 3rd printer.
    System.out.println("Printer No:" + cupsPrinter.getName());
    InputStream inputStream = new FileInputStream("C:MYPAth\\test.pdf.lnk");
    PrintJob printJob = new PrintJob.Builder(inputStream).copies(2).build();
    PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
    aset.add(new Copies(2));
    Map attributes = new HashMap();
    attributes.put("job-attributes", "print-quality:enum:3#media:keyword:iso_a5_148x210mm");
    printJob.setAttributes(attributes);
    PrintRequestResult printRequestResult = cupsPrinter.print(printJob);
}

我应该将.pdf.lnk文件扩展名更改为.pdf吗？我没有这样做是因为当我这样做时，Adobe Reader无法读取该文件。

P.S .：如果我将.txt文件提供给FileInputStream，它将正确打印包含的字符串。然后我尝试将Docflavor设置为INPUT_STREAM.PDF，然后再次获得

Exception in thread "main" java.lang.IllegalArgumentException: data is not of declared type

Javax Cups打印机打印无法识别的ByteStream（？）字符

0 个答案: