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

Java^TM Print Service API User Guide
APPENDIX A

Example: PrintPS.java

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

public class PrintPS {

	public static void main(String args[]) {
		PrintPS ps = new PrintPS();
	}
	public PrintPS() {
		/* Construct the print request specification.
		 * The print data is Postscript which will be 
	 	 * supplied as a stream.  The media size 
	 	 * required is A4, and 2 copies are to be printed
		 */
		DocFlavor flavor = DocFlavor.INPUT_STREAM.POSTSCRIPT;
		PrintRequestAttributeSet aset = 
			new HashPrintRequestAttributeSet();
		aset.add(MediaSizeName.ISO_A4);
		aset.add(new Copies(2));
		aset.add(Sides.TWO_SIDED_LONG_EDGE);
		aset.add(Finishings.STAPLE);

		/* locate a print service that can handle it */
		PrintService[] pservices =
			PrintServiceLookup.lookupPrintServices(flavor, aset);
		if (pservices.length > 0) {
			System.out.println("selected printer " + pservices[0].getName());

			/* create a print job for the chosen service */
			DocPrintJob pj = pservices[0].createPrintJob();
			try {
				/* 
				* Create a Doc object to hold the print data.
				* Since the data is postscript located in a disk file,
				* an input stream needs to be obtained
				* BasicDoc is a useful implementation that will if requested
				* close the stream when printing is completed.
				*/
				FileInputStream fis = new FileInputStream("example.ps");
				Doc doc = new SimpleDoc(fis, flavor, null);

				/* print the doc as specified */
				pj.print(doc, aset);

				/*
				* Do not explicitly call System.exit() when print returns.
				* Printing can be asynchronous so may be executing in a
				* separate thread.
				* If you want to explicitly exit the VM, use a print job 
				* listener to be notified when it is safe to do so.
				*/

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