java - java PDFPrint和PrintJobListener始终返回printJobNoMoreEvents

这是我的代码，用于打印pdf文件并在执行打印时获取事件。我的问题是，总会转到printJobNoMoreEvents而不是printJobCompleted。可能是什么？我该如何解决？是否可以从printJobNoMoreEvents事件中检查作业是否完成？

这是我的代码：

import com.qoppa.pdfPrint.PDFPrint;
import java.awt.print.PrinterJob;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintService;
import javax.print.SimpleDoc;
import javax.print.event.PrintJobEvent;
import javax.print.event.PrintJobListener;

public class PdfPrint implements PrintJobListener{

public static void main(String[] args) {
    try
    {
        // Create a printer job and get its PrintService
        PrinterJob pJob = PrinterJob.getPrinterJob();
        PrintService ps = pJob.getPrintService();

        // Load the PDF document and create SimpleDoc from it
        PDFPrint pdfPrint = new PDFPrint("C:\\temp\\file printing 1.pdf", null);
        SimpleDoc printDoc = new SimpleDoc(pdfPrint, DocFlavor.SERVICE_FORMATTED.PRINTABLE, null);

        // Get a doc print job from the service and set the listener and Printable
        DocPrintJob docPrint = ps.createPrintJob();
        docPrint.addPrintJobListener(new PdfPrint());
        docPrint.print(printDoc, null);

    }
    catch (Exception ex)
    {
        Logger.getLogger(PdfPrint.class.getName()).log(Level.SEVERE, null, ex);
    }
}

@Override
public void printDataTransferCompleted(PrintJobEvent pje) {
    System.out.println("printDataTransferCompleted");
}

@Override
public void printJobCompleted(PrintJobEvent pje) {
    System.out.println("printJobCompleted");
}

@Override
public void printJobFailed(PrintJobEvent pje) {
    System.out.println("printJobFailed");
}

@Override
public void printJobCanceled(PrintJobEvent pje) {
    System.out.println("printJobCanceled");
}

@Override
public void printJobNoMoreEvents(PrintJobEvent pje) {
    System.out.println("printJobNoMoreEvents");
}

@Override
public void printJobRequiresAttention(PrintJobEvent pje) {
    System.out.println("printJobRequiresAttention");
}

}

Thakn提前。

最佳答案

1）设置打印机服务更改此设置

PrintService ps = pJob.getPrintService();
PrinterJob pJob = PrinterJob.getPrinterJob();

对此

PrintService ps = PrintServiceLookup.lookupDefaultPrintService();

当我尝试使用PrintJob类中的.getPrintService（）时，它仅有的printDataTransferCompleted和printJobNoMoreEvents，它没有将pdf打印到打印机。

关于方法事件侦听器的说明：


  printDataTransferCompleted（）数据已成功传输
  从客户端到打印服务。
  
  printJobNoMoreEvents（）在此不再调用任何方法
  界面将为此打印作业被调用。
  
  printJobCompleted（）作业已完成。


然后我尝试使用PrintServiceLookup.lookupDefaultPrintService（）来获取默认打印机，它将使用printJobCompleted打印pdf。

2）要加载PDF文档，可以使用此

 String filename = "C:\\temp\\file printing 1.pdf";
    DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
    FileInputStream fis = null;
    fis = new FileInputStream(filename);
    Doc printDoc = new SimpleDoc(fis, flavor, null);

不需要使用qoppa