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android连接小票打印机，打印小票数据的两种模式

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android连接小票打印机，打印小票数据的两种模式

2023-11-15 04:04| 来源: 网络整理| 查看: 265

为了开发android无线点餐系统，需要用到打印小票任务，根据网上查找资料所得，学习了两种方法，一种为通过tomcat服务连接服务器所连接的打印机打印，一种为直接连接网络打印机打印

一、通过tomcat服务连接服务器所连接的打印机打印

手机或平板是一种移动设备，不可能直接打印机，所以要把打印的数据发给tomcat，通过服务器电脑打印

先定义一个javabean实体类，用来保存数据

public class FoodChoose implements Serializable{ int id; String tablename; String foodname; int foodnum;//数量 int foodunitprice;//单价 public FoodChoose() { super(); } public FoodChoose(String tablename, String foodname, int foodnum, int foodunitprice) { super(); this.tablename = tablename; this.foodname = foodname; this.foodnum = foodnum; this.foodunitprice = foodunitprice; } public FoodChoose(int id, String tablename, String foodname, int foodnum, int foodunitprice) { super(); this.id = id; this.tablename = tablename; this.foodname = foodname; this.foodnum = foodnum; this.foodunitprice = foodunitprice; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getTablename() { return tablename; } public void setTablename(String tablename) { this.tablename = tablename; } public String getFoodname() { return foodname; } public void setFoodname(String foodname) { this.foodname = foodname; } public int getFoodnum() { return foodnum; } public void setFoodnum(int foodnum) { this.foodnum = foodnum; } public int getFoodunitprice() { return foodunitprice; } public void setFoodunitprice(int foodunitprice) { this.foodunitprice = foodunitprice; } @Override public String toString() { return "FoodChoose [id=" + id + ", tablename=" + tablename + ", foodname=" + foodname + ", foodnum=" + foodnum + ", foodunitprice=" + foodunitprice + "]"; }

再定义一个打印类Prient implements Printable,在这个类里实现打印格式调整，以及数据获取

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.List; import vo.FoodChoose; public class Prient implements Printable { String tablename,places,total,receiveprice,change; List lists; int heightIndex; public Prient(String tablename,String places,String total,String receiveprice,String change,List lists) { System.out.println("Prient构造方法"); this.tablename = tablename; this.places = places; this.total = total; this.receiveprice = receiveprice; this.change = change; this.lists = lists; } @Override public int print(Graphics g, PageFormat pf, int page) throws PrinterException { System.out.println("----print----"); heightIndex = -20; if (page > 0) { return NO_SUCH_PAGE; } Graphics2D g2d = (Graphics2D) g; g2d.setFont(new Font("Default", Font.PLAIN, 14)); g2d.drawString("天龙餐饮（消费清单）", 50, 12); g2d.setFont(new Font("Default", Font.PLAIN, 16)); g2d.drawString("台号："+places+"-"+tablename, 52, 30); g2d.setFont(new Font("Default", Font.PLAIN, 10)); g2d.drawString("流水号：123456"+" "+Content.getNowTime(), 30, 45); g2d.setFont(new Font("Default", Font.PLAIN, 12)); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 55); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 58); g2d.drawString("项目" + " "+"数量" + " "+"单价" + " "+"小计", 30, 70); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 80); System.out.println("xxxxxxxxxxxxxxxxxxxxx"); for (FoodChoose f : lists) { heightIndex = heightIndex+20; System.out.println("lists大小="+lists.size()); System.out.println("aa打印菜名＝"+f.getFoodname()); double price = f.getFoodnum() * f.getFoodunitprice();//小计 if(f.getFoodname().length()==2){ g2d.drawString(f.getFoodname() + Content.two1+f.getFoodnum() + Content.two2+f.getFoodunitprice() + Content.two3+ price+"元", 30, 90+heightIndex); }else if(f.getFoodname().length()==3){ g2d.drawString(f.getFoodname() + Content.three1+f.getFoodnum() + Content.three2+f.getFoodunitprice() + Content.three3+ price+"元", 30, 90+heightIndex); }else if(f.getFoodname().length()==4){ g2d.drawString(f.getFoodname() + Content.four1+f.getFoodnum() + Content.four2+f.getFoodunitprice() + Content.four3+ price+"元", 30, 90+heightIndex); }else if(f.getFoodname().length()==5){ g2d.drawString(f.getFoodname() + Content.five1+f.getFoodnum() + Content.five2+f.getFoodunitprice() + Content.five3+ price+"元", 30, 90+heightIndex); } } // g2d.drawString("荷包蛋" + " "+"2" + " "+"1" + " "+"2元", 30, 90); // g2d.drawString("鱼片粥" + " "+"2" + " "+"6" + " "+"12元", 30,110); // g2d.drawString("白粥" + " "+"1" + " "+"2" + " "+"2元", 30, 130); // g2d.drawString("黑椒牛肉" + " "+"1" + " "+"25" + " "+"25元", 30, 150); // g2d.drawString("河鱼河虾煲" + " "+"1" + " "+"20" + " "+"20元", 30, 170); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 90+heightIndex+10); g2d.drawString(" "+"总计： "+total, 30, 90+heightIndex+20); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 90+heightIndex+30); g2d.drawString(" "+"收款： "+receiveprice, 30, 90+heightIndex+40); g2d.drawString(" "+"找零： "+change, 30, 90+heightIndex+60); g2d.drawString("服务员：" + "001"+" " + "收银员：" + "002", 30, 90+heightIndex+80); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 90+heightIndex+90); g2d.drawString("- - - - - - - - - - - - - - - - - - - - - -", 30, 90+heightIndex+93); g2d.drawString("欢迎光临，谢谢惠顾", 60, 90+heightIndex+113); g2d.drawString("服务电话：13888888888", 50, 90+heightIndex+133); System.out.println("mmmmmmmmmmmmmmmmmmmmmmmm"); return PAGE_EXISTS; } }

最后要自定义一个方法，调用上面的打印工具类

public static void print(String tablename,String places,String total,String receiveprice,String change,List lists){ System.out.println("Content.print"); // int height = 1000 + 3 * 15 + 20; int height = 1000; // 通俗理解就是书、文档 Book book = new Book(); // 打印格式 PageFormat pf = new PageFormat(); pf.setOrientation(PageFormat.PORTRAIT); // 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 p = new Paper(); p.setSize(230, height); p.setImageableArea(5, -20, 230, height + 20); pf.setPaper(p); // 把 PageFormat 和 Printable 添加到书中，组成一个页面 book.append(new Prient(tablename,places,total,receiveprice,change,lists), pf); // 获取打印服务对象 PrinterJob job = PrinterJob.getPrinterJob(); job.setPageable(book); try { job.print(); System.out.println("开始打印"); } catch (PrinterException e) { System.out.println("================打印出现异常"); } } 通过以上的代码，就可以实现在javaEE中通过tomcat打印（连接tomcat的代码，在这就不写了）

第二种方法，直接连接网络打印机（需要该打印机支持网线连接）,还要求手机或平板所连接的网必须和打印机处于同一个网络字段

String PRINTER_IP = "192.168.2.223";//网络打印要ip地址，端口用9100即可

先要设定一个打印工具类pos

public class Pos { //定义编码方式 private static String encoding = null; private Socket sock = null; // 通过socket流进行读写 private OutputStream socketOut = null; private OutputStreamWriter writer = null; /** * 初始化Pos实例 * * @param ip 打印机IP * @param port 打印机端口号 * @param encoding 编码 * @throws IOException */ public Pos(String ip, int port, String encoding) throws IOException { sock = new Socket(ip, port); socketOut = new DataOutputStream(sock.getOutputStream()); this.encoding = encoding; writer = new OutputStreamWriter(socketOut, encoding); } /** * 关闭IO流和Socket * * @throws IOException */ public void closeIOAndSocket() throws IOException { writer.close(); socketOut.close(); sock.close(); } /** * 打印二维码 * * @param qrData 二维码的内容 * @throws IOException */ public void qrCode(String qrData) throws IOException { int moduleSize = 8; int length = qrData.getBytes(encoding).length; //打印二维码矩阵 writer.write(0x1D);// init writer.write("(k");// adjust height of barcode writer.write(length + 3); // pl writer.write(0); // ph writer.write(49); // cn writer.write(80); // fn writer.write(48); // writer.write(qrData); writer.write(0x1D); writer.write("(k"); writer.write(3); writer.write(0); writer.write(49); writer.write(69); writer.write(48); writer.write(0x1D); writer.write("(k"); writer.write(3); writer.write(0); writer.write(49); writer.write(67); writer.write(moduleSize); writer.write(0x1D); writer.write("(k"); writer.write(3); // pl writer.write(0); // ph writer.write(49); // cn writer.write(81); // fn writer.write(48); // m writer.flush(); } /** * 进纸并全部切割 * * @return * @throws IOException */ public void feedAndCut() throws IOException { writer.write(0x1D); writer.write(86); writer.write(65); // writer.write(0); //切纸前走纸多少 writer.write(100); writer.flush(); //另外一种切纸的方式 // byte[] bytes = {29, 86, 0}; // socketOut.write(bytes); } /** * 打印换行 * * @return length 需要打印的空行数 * @throws IOException */ public void printLine(int lineNum) throws IOException { for (int i = 0; i < lineNum; i++) { writer.write("\n"); } writer.flush(); } /** * 打印换行(只换一行) * * @throws IOException */ public void printLine() throws IOException { writer.write("\n"); writer.flush(); } /** * 打印空白(一个Tab的位置，约4个汉字) * * @param length 需要打印空白的长度, * @throws IOException */ public void printTabSpace(int length) throws IOException { for (int i = 0; i < length; i++) { writer.write("\t"); } writer.flush(); } /** * 打印空白（一个汉字的位置） * * @param length 需要打印空白的长度, * @throws IOException */ public void printWordSpace(int length) throws IOException { for (int i = 0; i < length; i++) { writer.write(" "); } writer.flush(); } /** * 打印位置调整 * * @param position 打印位置 0：居左(默认) 1：居中 2：居右 * @throws IOException */ public void printLocation(int position) throws IOException { writer.write(0x1B); writer.write(97); writer.write(position); writer.flush(); } /** * 绝对打印位置 * * @throws IOException */ public void printLocation(int light, int weight) throws IOException { writer.write(0x1B); writer.write(0x24); writer.write(light); writer.write(weight); writer.flush(); } /** * 打印文字 * * @param text * @throws IOException */ public void printText(String text) throws IOException { String s = text; byte[] content = s.getBytes("gbk"); socketOut.write(content); socketOut.flush(); } /** * 新起一行，打印文字 * * @param text * @throws IOException */ public void printTextNewLine(String text) throws IOException { //换行 writer.write("\n"); writer.flush(); String s = text; byte[] content = s.getBytes("gbk"); socketOut.write(content); socketOut.flush(); } /** * 初始化打印机 * * @throws IOException */ public void initPos() throws IOException { writer.write(0x1B); writer.write(0x40); writer.flush(); } /** * 加粗 * * @param flag false为不加粗 * @return * @throws IOException */ public void bold(boolean flag) throws IOException { if (flag) { //常规粗细 writer.write(0x1B); writer.write(69); writer.write(0xF); writer.flush(); } else { //加粗 writer.write(0x1B); writer.write(69); writer.write(0); writer.flush(); } }

下面就可以调用打印工具类pos实现网络打印

/** * 直接连接网络打印机打印，不需要tomcat,暂时不用 */ public void testPrint() { System.out.println("测试打印"); // 开启一个子线程 new Thread() { public void run() { try { pos = new Pos(Content.PRINTER_IP, 9100, "GBK"); // 第一个参数是打印机网口IP // 初始化打印机 pos.initPos(); // 初始化订单数据 initData(); pos.bold(true); pos.printTabSpace(2);//两个tab距离，一个tab=4个汉字 pos.printWordSpace(1);//一个汉字距离 pos.printText("**测试店铺"); pos.printLocation(0);//打印位置调整 pos.printTextNewLine("----------------------------------------"); pos.bold(false); pos.printTextNewLine("订 单 号：1005199"); pos.printTextNewLine("用 户 名：15712937281"); pos.printTextNewLine("桌 号：3号桌"); pos.printTextNewLine("订单状态：订单已确认"); pos.printTextNewLine("订单日期：2016/2/19 12:34:53"); pos.printTextNewLine("付 款 人：线下支付（服务员：宝哥）"); pos.printTextNewLine("服 务 员：1001"); pos.printTextNewLine("订单备注：不要辣，少盐"); pos.printLine(2); pos.printText("项目"); pos.printLocation(20, 1); pos.printText("单价"); pos.printLocation(99, 1); pos.printWordSpace(1); pos.printText("数量"); pos.printWordSpace(3); pos.printText("小计"); pos.printLocation(0);//打印位置调整 pos.printTextNewLine("----------------------------------------"); for (FoodChoose foods : foodChoose) { pos.printTextNewLine(foods.getFoodname()); pos.printLocation(20, 1); pos.printText(foods.getFoodunitprice()+""); pos.printLocation(99, 1); pos.printWordSpace(1); pos.printText(foods.getFoodnum()+""); pos.printWordSpace(3); } pos.printTextNewLine("----------------------------------------------"); //pos.printLocation(1); //pos.printLine(2); // 打印二维码 //pos.qrCode("http://blog.csdn.net/haovip123"); // 切纸 //pos.feedAndCut(); pos.closeIOAndSocket(); pos = null; } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }.start(); } private void initData() { foodChoose = new ArrayList(); for (int i = 0; i < 4; i++) { FoodChoose fb = new FoodChoose(); fb.setFoodname("测试菜品" + i); fb.setFoodunitprice(90); fb.setFoodnum(2); foodChoose.add(fb); } }



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