java - Java：无法打印，作业出现在后台处理程序中，片刻后消失

Question

我在使用 java 类打印时遇到问题。每次找到我的文件（路径正确）时，它都会成功发送到我的打印机队列，但片刻后它会消失，没有错误，也没有打印。这是我的代码，在此先感谢。

    private void print(String path){

   FileInputStream psStream = null;
    try {
        psStream = new FileInputStream(path);
        } catch (FileNotFoundException ffne) {
          ffne.printStackTrace();
        }
        if (psStream == null) {
            return;
        }


    DocFlavor psInFormat = DocFlavor.INPUT_STREAM.AUTOSENSE;
    Doc myDoc = new SimpleDoc(psStream, psInFormat, null);  
    PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();    
    PrintService[] services = PrintServiceLookup.lookupPrintServices(psInFormat, aset);

    PrintService myPrinter = null;
    for (int i = 0; i < services.length; i++){
        String svcName = services[i].toString();    
        System.out.println("service found: "+svcName);

        if (svcName.contains(PrintServiceLookup.lookupDefaultPrintService().getName())){
            myPrinter = services[i];
            System.out.println("my printer found: "+svcName);
            break;
        }
    }

    if (myPrinter != null) {            
        DocPrintJob job = myPrinter.createPrintJob();
        try {
            job.print(myDoc, aset);
        } catch (Exception pe) {
            pe.getMessage();}
    } else {
        System.out.println("no printer services found");
    }
}