使用java打印html文件而不向用户显示打印对话框 [英] Printing an html file using java without showing print dialog to the user

问题描述

我正在尝试将 html 文件直接打印到默认打印机，而不向用户显示打印对话框.

I'm trying to print an html file directly to the default printer without showing print dialog to the user.

我刚刚从一些在线教程中获得了以下代码，它适用于 PNG 文件.

I just got the below code from some online tutorials and it worked well for the PNG file.

import javax.print.*;
import javax.print.attribute.*;
import java.io.*;

public class Printing {
  public static void main(String args[]) throws Exception {
    String filename = args[0];
    PrintRequestAttributeSet pras = 
      new HashPrintRequestAttributeSet();
    DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG;
    PrintService printService[] = 
      PrintServiceLookup.lookupPrintServices(flavor, pras);
    PrintService defaultService = 
      PrintServiceLookup.lookupDefaultPrintService();
    PrintService service = ServiceUI.printDialog(null, 200, 200, printService, defaultService, flavor, pras);
    if (service != null) {
      DocPrintJob job = service.createPrintJob();
      FileInputStream fis = new FileInputStream(filename);
      DocAttributeSet das = new HashDocAttributeSet();
      Doc doc = new SimpleDoc(fis, flavor, das);
      job.print(doc, pras);
      Thread.sleep(10000);
    }
    System.exit(0);
  }
}

我想将 DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG; 更改为 DocFlavor flavor = DocFlavor.INPUT_STREAM.<一些 html 格式>;

请建议在此处使用哪种格式合适?

Please suggest which format would be appropriate to use here ?

并请建议如何避免在运行此代码时弹出打印对话框.?

and please suggest how to avoid print dialog pop up while running this code. ?

提前致谢桑迪

推荐答案

PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
//    PrintService service = ServiceUI.printDialog(null, 200, 200, printService, defaultService, flavor, pras);
if (service != null) {
     ... the rest code

您可以只使用默认服务而不是从对话框中显示

You can use just default service rather than showing from the dialog

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