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, 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", Font.PLAIN, 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", 10, 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", 10, yIndex + lineHeight, lineWidth, lineHeight);
					//收货信息边框
					Stroke stroke = new BasicStroke(0.5f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL,0,new float[]{4, 4},0);
					graphics2D.setStroke(stroke);
					graphics2D.drawRect(5, 10, 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, lineWidth, 12);
					graphics2D.setFont(new Font("宋体", Font.PLAIN, 6));
					graphics2D.setColor(grey);
					yIndex = drawString(graphics2D, "操作员：小清新", 5, yIndex + lineHeight + 2, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "日期：2017-01-05", 5 + lineWidth/2, yIndex, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "品名", 5, yIndex + lineHeight * 2 - 5, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "规格", (lineWidth/10)*4, yIndex, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "单价", (lineWidth/10)*8, yIndex, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "数量", (lineWidth/10)*10, yIndex, lineWidth, lineHeight);
					for (int i=0; i<5; i++){
						graphics2D.setFont(new Font("宋体", Font.PLAIN, 7));
						yIndex = drawString(graphics2D, "E复合维生素B片100片E复合维生素B片100片", 5, yIndex + 15, (lineWidth/10)*7, 10);
						graphics2D.setFont(new Font("宋体", Font.PLAIN, 6));
						graphics2D.setColor(grey);
						yIndex = drawString(graphics2D, "100片/盒", 5, yIndex + 11, lineWidth, lineHeight);
						yIndex = drawString(graphics2D, "14.50", (lineWidth/10)*8, yIndex, lineWidth, lineHeight);
						yIndex = drawString(graphics2D, "2", (lineWidth/10)*10, yIndex, lineWidth, lineHeight);
						graphics2D.setFont(new Font("宋体", Font.PLAIN, 7));
						yIndex = yIndex + 2;
						graphics2D.drawLine(5, yIndex, 5 + lineWidth, yIndex);
					}
					graphics2D.setColor(defaultColor);
					yIndex = drawString(graphics2D, "会员名称：小清新", 5, yIndex + lineHeight * 2, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "总  数：6", 5, yIndex + lineHeight, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "总  计：55.30", 5, yIndex + lineHeight, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "收  款：100.00", 5, yIndex + lineHeight, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "找  零：44.70", 5, yIndex + lineHeight, lineWidth, lineHeight);
					graphics2D.setFont(new Font("宋体", Font.PLAIN, 6));
					graphics2D.setColor(grey);
					yIndex = drawString(graphics2D, "电话：020-123456", 5, yIndex + lineHeight * 2, lineWidth, lineHeight);
					yIndex = drawString(graphics2D, "地址：北京市海淀区上地十街10号百度大厦", 5, yIndex + lineHeight, lineWidth, lineHeight);
					yIndex = yIndex + 20;
					graphics2D.drawLine(0, yIndex, 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(), x, 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(), x, y);
				y = y + lineHeight;
			}
			return y - lineHeight;
		}
	}
}