Java编程打印购物小票实现代码

package test;
import java.awt.*;
import java.awt.print.*;
/**
 * 打印机测试类（58mm）
 * 1、目标打印机必须设置为默认打印机
 * 2、打印页面的宽度和具体的打印机有关，一般为打印纸的宽度，需要配置成系统参数
 * 3、一个汉字的宽度大概是12点
 */
public class PrintTest {
	public static void main(String[] args){
		if(PrinterJob.lookupPrintServices().length>0){
			/*
        打印格式
       */
			PageFormat pageFormat = new PageFormat();
			//设置打印起点从左上角开始，从左到右，从上到下打印
			pageFormat.setOrientation(PageFormat.PORTRAIT);
			/*
        打印页面格式设置
       */
			Paper paper = new Paper();
			//设置打印宽度（固定，和具体的打印机有关）和高度（跟实际打印内容的多少有关）
			paper.setSize(140,450);
			//设置打印区域 打印起点坐标、打印的宽度和高度
			paper.setImageableArea(0,135,450);
			pageFormat.setPaper(paper);
			//创建打印文档
			Book book = new Book();
			book.append(new Printable() {
				@Override
				        public int print(Graphics graphics,PageFormat pageFormat,int pageIndex) throws PrinterException {
					if(pageIndex>0){
						return NO_SUCH_PAGE;
					}
					Graphics2D graphics2D = (Graphics2D) graphics;
					Font font = new Font("宋体",Font.PLAIN,5);
					graphics2D.setFont(font);
					drawString(graphics2D,"//////////////////////////////",10,17,119,8);
					font = new Font("宋体",7);
					graphics2D.setFont(font);
					int yIndex = 30;
					int lineHeight = 10;
					int lineWidth = 120;
					Color defaultColor = graphics2D.getColor();
					Color grey = new Color(145,145,145);
					//收货信息
					yIndex = drawString(graphics2D,"收货人：路人甲",yIndex,lineWidth,lineHeight);
					yIndex = drawString(graphics2D,"收货地址：北京市海淀区上地十街10号百度大厦",yIndex + lineHeight,lineHeight);
					//收货信息边框
					Stroke stroke = new BasicStroke(0.5f,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL,new float[]{4,4},0);
					graphics2D.setStroke(stroke);
					graphics2D.drawRect(5,129,yIndex);
					//药店名称
					lineWidth = 129;
					lineHeight = 8;
					graphics2D.setFont(new Font("宋体",Font.BOLD,8));
					graphics2D.setColor(defaultColor);
					yIndex = drawString(graphics2D,"北京药店零售小票",5,yIndex + lineHeight + 20,12);
					graphics2D.setFont(new Font("宋体",6));
					graphics2D.setColor(grey);
					yIndex = drawString(graphics2D,"操作员：小清新",yIndex + lineHeight + 2,"日期：2017-01-05",5 + lineWidth/2,"品名",yIndex + lineHeight * 2 - 5,"规格",(lineWidth/10)*4,"单价",(lineWidth/10)*8,"数量",(lineWidth/10)*10,lineHeight);
					for (int i=0; i<5; i++){
						graphics2D.setFont(new Font("宋体",7));
						yIndex = drawString(graphics2D,"E复合维生素B片100片E复合维生素B片100片",yIndex + 15,(lineWidth/10)*7,10);
						graphics2D.setFont(new Font("宋体",6));
						graphics2D.setColor(grey);
						yIndex = drawString(graphics2D,"100片/盒",yIndex + 11,lineHeight);
						yIndex = drawString(graphics2D,"14.50","2",lineHeight);
						graphics2D.setFont(new Font("宋体",7));
						yIndex = yIndex + 2;
						graphics2D.drawLine(5,5 + lineWidth,yIndex);
					}
					graphics2D.setColor(defaultColor);
					yIndex = drawString(graphics2D,"会员名称：小清新",yIndex + lineHeight * 2,"总  数：6","总  计：55.30","收  款：100.00","找  零：44.70",lineHeight);
					graphics2D.setFont(new Font("宋体","电话：020-123456","地址：北京市海淀区上地十街10号百度大厦",lineHeight);
					yIndex = yIndex + 20;
					graphics2D.drawLine(0,140,yIndex);
					return PAGE_EXISTS;
				}
			},pageFormat);
			//获取默认打印机
			PrinterJob printerJob = PrinterJob.getPrinterJob();
			printerJob.setPageable(book);
			try {
				printerJob.print();
			}
			catch (PrinterException e) {
				e.printStackTrace();
				System.out.println("打印异常");
			}
		} else{
			System.out.println("没法发现打印机服务");
		}
	}
	/**
   * 字符串输出
   * @param graphics2D  画笔
   * @param text     打印文本
   * @param x       打印起点 x 坐标
   * @param y       打印起点 y 坐标
   * @param lineWidth   行宽
   * @param lineHeight  行高
   * @return 返回终点 y 坐标
   */
	private static int drawString(Graphics2D graphics2D,String text,int x,int y,int lineWidth,int lineHeight){
		FontMetrics fontMetrics = graphics2D.getFontMetrics();
		if(fontMetrics.stringWidth(text)<lineWidth){
			graphics2D.drawString(text,x,y);
			return y;
		} else{
			char[] chars = text.toCharArray();
			int charsWidth = 0;
			StringBuffer sb = new StringBuffer();
			for (int i=0; i<chars.length; i++){
				if((charsWidth + fontMetrics.charWidth(chars[i]))>lineWidth){
					graphics2D.drawString(sb.toString(),y);
					sb.setLength(0);
					y = y + lineHeight;
					charsWidth = fontMetrics.charWidth(chars[i]);
					sb.append(chars[i]);
				} else{
					charsWidth = charsWidth + fontMetrics.charWidth(chars[i]);
					sb.append(chars[i]);
				}
			}
			if(sb.length()>0){
				graphics2D.drawString(sb.toString(),y);
				y = y + lineHeight;
			}
			return y - lineHeight;
		}
	}
}