Java Print Service API User Guide: - Example: PrintGIFtoStream.java - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

Java^TM Print Service API User Guide

APPENDIX B

Example: PrintGIFtoStream.java

/*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
*/

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

/*
* Use the Java(TM) Print Service API to locate a service which can export
* a GIF-encoded image to a stream as Postscript. This may be spooled to a
* Postscript printer, or used in a postscript viewer.
*/
public class PrintGIFtoStream {

	public static void main(String args[]) {

		/* Use the pre-defined flavor for a GIF from an InputStream */
		DocFlavor flavor = DocFlavor.INPUT_STREAM.GIF;

		/* Specify the type of the output stream */
		String psMimeType = DocFlavor.BYTE_ARRAY.POSTSCRIPT.getMimeType();

		/* Locate factory which can export a GIF image stream as Postscript */
		StreamPrintServiceFactory[] factories =
			StreamPrintServiceFactory.lookupStreamPrintServiceFactories(
					flavor, psMimeType);
		if (factories.length == 0) {
			System.err.println("No suitable factories");
			System.exit(0);
		}

		try {
			/* Load the file */
			FileInputStream fis = new FileInputStream("java2dlogo.gif");
			/* Create a file for the exported postscript */
			String filename = "newfile.ps";
			FileOutputStream fos = new FileOutputStream(filename);

			/* Create a Stream printer for Postscript */
			StreamPrintService sps = factories[0].getPrintService(fos);

			/* Create and call a Print Job for the GIF image */
			DocPrintJob pj = sps.createPrintJob();
			PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
			aset.add(new Copies(2));
			aset.add(MediaSizeName.ISO_A4);
			aset.add(Sides.TWO_SIDED_LONG_EDGE);
			aset.add(Finishings.STAPLE);

			Doc doc = new SimpleDoc(fis, flavor, null);

			pj.print(doc, aset);
			fos.close();

		} catch (PrintException pe) { 
			System.err.println(pe);
		} catch (IOException ie) { 
			System.err.println(ie);
		}
	}
}

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