android连接小票打印机，打印小票数据的两种模式

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;}@Overridepublic 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<FoodChoose> lists;int heightIndex;public Prient(String tablename,String places,String total,String receiveprice,String change,List<FoodChoose> 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<FoodChoose> 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<FoodChoose>();  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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