Java编程打印购物小票实现代码
简单介绍运行环境：
语言：Java
工具：eclipse
系统：Windows7
（打印设备暂时没有，所以只能提供预览图）
最近，项目需要为商城做一个购物小票的打印功能，日常我们去超市买东西，结账的时候收银员都会打印一个小票，一般的商城也都需要这样的一个小功能，本文给出的 demo 是在 58mm 的热敏打印机下的例子，如果是其他纸张类型的打印机，调整纸张宽度即可。
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;
}
}
}
运行结果：
效果预览：
总结
简单说就是编写一段Java程序，将输出结果另存为“ *.xps ”格式文件，由打印机输出，非常简单。希望对大家有所帮助。如有问题欢迎留言指出。感谢朋友们对本站的支持。
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