java实现调用打印机代码详解
接口 PrintService 是 DocPrintJob 的工厂。PrintService 描述了打印机的功能，并可查询它来了解打印机支持的属性。

import java.io.File;import java.io.FileInputStream;import javax.print.Doc;import javax.print.DocFlavor;import javax.print.DocPrintJob;import javax.print.PrintService;import javax.print.PrintServiceLookup;import javax.print.ServiceUI;import javax.print.SimpleDoc;import javax.print.attribute.DocAttributeSet;import javax.print.attribute.HashDocAttributeSet;import javax.print.attribute.HashPrintRequestAttributeSet;import javax.swing.JFileChooser;/** * 建立与打印机的连接 * @author Administrator * */public class PrintDemo {public static void main(String[] args) {JFileChooser fileChooser = new JFileChooser(); //创建打印作业int state = fileChooser.showOpenDialog(null);if(state == fileChooser.APPROVE_OPTION){File file = new File("D:/zkyzl.txt"); //获取选择的文件//构建打印请求属性集HashPrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();//设置打印格式，因为未确定类型，所以选择autosenseDocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;//查找所有的可用的打印服务PrintService printService[] = PrintServiceLookup.lookupPrintServices(flavor, pras);//定位默认的打印服务PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();//显示打印对话框PrintService service = ServiceUI.printDialog(null, 200, 200, printService, defaultService, flavor, pras);if(service != null){try {DocPrintJob job = service.createPrintJob(); //创建打印作业FileInputStream fis = new FileInputStream(file); //构造待打印的文件流DocAttributeSet das = new HashDocAttributeSet();Doc doc = new SimpleDoc(fis, flavor, das);job.print(doc, pras);} catch (Exception e) {e.printStackTrace();}}}}}

附官方详解：http://doc.java.sun.com/DocWeb/api/javax.print.PrintService