JAVA连接打印机打印小票

1.商品信息类

package com.smartsuppermarket.commodity;

public class Commodity {

// 商品名称
private String name;
// 单价
private String unit_price;
// 数量
private String num;

// 总价
private String sum;

public Commodity(String name, String unit_price, String num, String sum, String barcode) {
super();
this.name = name;
this.unit_price = unit_price;
this.num = num;
this.sum = sum;
this.barcode = barcode;
}

// 条码
private String barcode;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getUnit_price() {
return unit_price;
}

public void setUnit_price(String unit_price) {
this.unit_price = unit_price;
}

public String getNum() {
return num;
}

public void setNum(String num) {
this.num = num;
}

public String getSum() {
return sum;
}

public void setSum(String sum) {
this.sum = sum;
}

public String getBarcode() {
return barcode;
}

public void setBarcode(String barcode) {
this.barcode = barcode;
}

}
2.打印布局类

package com.smartsuppermarket.printer;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.util.ArrayList;
import java.util.Calendar;

import com.smartsuppermarket.commodity.Commodity;

//实现Printable接口 用于创建打印内容
public class SalesTicket implements Printable {
private ArrayList<Commodity> list;
private String cashier;
private Font font;
private String sale_num;
private String sale_sum;
private String practical;
private String changes;
private String orders;

// 构造函数
public SalesTicket(ArrayList<Commodity> list, String cashier, String orders, String sale_num, String sale_sum,
String practical, String changes) {
this.list = list;
// 收银员编号
this.cashier = cashier;
// 订单标号
this.orders = orders;
// 商品总数
this.sale_num = sale_num;
// 总金额
this.sale_sum = sale_sum;
// 实收
this.practical = practical;
// 找零
this.changes = changes;
}

/**
* @param Graphic指明打印的图形环境
* @param PageFormat指明打印页格式（页面大小以点为计量单位，1点为1英才的1/72，1英寸为25.4毫米。A4纸大致为595×
*            842点）
* @param pageIndex指明页号
**/
@Override
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
Component c = null;
// 转换成Graphics2D 拿到画笔
Graphics2D g2 = (Graphics2D) graphics;
// 设置打印颜色为黑色
g2.setColor(Color.black);

// 打印起点坐标
double x = pageFormat.getImageableX();
double y = pageFormat.getImageableY();

// 虚线
float[] dash1 = { 4.0f };
// width - 此 BasicStroke 的宽度。此宽度必须大于或等于 0.0f。如果将宽度设置为
// 0.0f，则将笔划呈现为可用于目标设备和抗锯齿提示设置的最细线条。
// cap - BasicStroke 端点的装饰
// join - 应用在路径线段交汇处的装饰
// miterlimit - 斜接处的剪裁限制。miterlimit 必须大于或等于 1.0f。
// dash - 表示虚线模式的数组
// dash_phase - 开始虚线模式的偏移量

// 设置画虚线
g2.setStroke(new BasicStroke(0.5f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 4.0f, dash1, 0.0f));

// 设置打印字体（字体名称、样式和点大小）（字体名称可以是物理或者逻辑名称）
font = new Font("宋体", Font.PLAIN, 11);
g2.setFont(font);// 设置字体
float heigth = font.getSize2D();// 字体高度
// 标题
g2.drawString("广西机电工程学校智能超市", (float) x, (float) y + heigth);
float line = 2 * heigth;

font = new Font("宋体", Font.PLAIN, 8);
g2.setFont(font);// 设置字体
heigth = font.getSize2D();// 字体高度

// 显示收银员
g2.drawString("收银员:" + cashier, (float) x, (float) y + line);
// 显示订单号
g2.drawString("订单号:" + orders, (float) x + 100, (float) y + line);

line += heigth;
// 显示标题
g2.drawString("名称", (float) x + 20, (float) y + line);
g2.drawString("单价", (float) x + 60, (float) y + line);
g2.drawString("数量", (float) x + 85, (float) y + line);
g2.drawString("总额", (float) x + 115, (float) y + line);
line += heigth;
g2.drawLine((int) x, (int) (y + line), (int) x + 158, (int) (y + line));

// 第4行
line += heigth;

// 显示内容
for (int i = 0; i < list.size(); i++) {

Commodity commodity = list.get(i);

g2.drawString(commodity.getName(), (float) x, (float) y + line);
line += heigth;

g2.drawString(commodity.getBarcode(), (float) x, (float) y + line);
g2.drawString(commodity.getUnit_price(), (float) x + 60, (float) y + line);
g2.drawString(commodity.getNum(), (float) x + 90, (float) y + line);
g2.drawString(commodity.getSum(), (float) x + 120, (float) y + line);
line += heigth;

}
line += heigth;

g2.drawLine((int) x, (int) (y + line), (int) x + 158, (int) (y + line));
line += heigth;

g2.drawString("售出商品数:" + sale_num + "件", (float) x, (float) y + line);
g2.drawString("合计:" + sale_sum + "元", (float) x + 70, (float) y + line);
line += heigth;
g2.drawString("实收:" + practical + "元", (float) x, (float) y + line);
g2.drawString("找零:" + changes + "元", (float) x + 70, (float) y + line);
line += heigth;
g2.drawString("时间:" + Calendar.getInstance().getTime().toLocaleString(), (float) x, (float) y + line);

line += heigth;
g2.drawString("天天平价,日日新鲜", (float) x + 20, (float) y + line);

line += heigth;
g2.drawString("钱票请当面点清，离开柜台恕不负责", (float) x, (float) y + line);
switch (pageIndex) {
case 0:

return PAGE_EXISTS;
default:
return NO_SUCH_PAGE;

}

}

}

3.打印小票
/**
* 打印销售小票
*
* @param order
* 订单号
* @param num
* 数量
* @param sum
* 总金额
* @param practical
* 实收
* @param change
* 找零
*/
private void PrintSale(String order, String num, String sum, String practical, String change) {
try {
// 通俗理解就是书、文档
Book book = new Book();
// 设置成竖打
PageFormat pf = new PageFormat();
pf.setOrientation(PageFormat.PORTRAIT);

ArrayList<Commodity> cmd_list = new ArrayList<Commodity>();
// 取出数据
for (int i = 0; i < list.size(); i++) {
Collect c = list.get(i);
Commodity cd = new Commodity(c.getName(), String.valueOf(c.getSell()), String.valueOf(c.getNum()),
String.valueOf(c.getTotal()), c.getCode());
cmd_list.add(cd);
}

// 通过Paper设置页面的空白边距和可打印区域。必须与实际打印纸张大小相符。
Paper paper = new Paper();
paper.setSize(158, 30000);// 纸张大小
paper.setImageableArea(0, 0, 158, 30000);// A4(595 X
// 842)设置打印区域，其实0，0应该是72，72，因为A4纸的默认X,Y边距是72
pf.setPaper(paper);

book.append(new SalesTicket(cmd_list, Windows.user_num, order, num, sum, practical, change), pf);

// 获取打印服务对象
PrinterJob job = PrinterJob.getPrinterJob();
// 设置打印类
job.setPageable(book);

job.print();
} catch (PrinterException e) {
e.printStackTrace();
}
}

//-------使用方法----------
// 订单编号 数量 总额 实收 找零 负责人
String num = String.valueOf(number);
String sum1 = String.valueOf(CD.getSum());
String ptc = CD.getPractical();
String change = String.valueOf(CD.getChange());
String mess[] = { order, num, sum1, ptc, change, Windows.user_num };
// 插入数据到订单销售表
tm.InsertOrders(mess);
// 打印小票
PrintSale(order, num, sum1, ptc, change);