Android进阶——安卓调用ESC/POS打印机打印

前言

前一段时间由于工作需要，要研究一下安卓程序调用打印机打印小票，并且要求不能使用蓝牙调用，研究了一下，可以利用socket连接，来实现打印功能。写了个Demo，分享一下。

工具：一台打印机（芯烨XP-80XX），一台安卓测试机

开发环境：Android Studio 1.5

需求：点击按钮，实现打印小票功能，小票上除必要文字外，还要有二维码。

封装了一个Pos打印工具类：

package com.example.haoguibao.myapplication;import java.io.DataOutputStream;import java.io.IOException;import java.io.OutputStream;import java.io.OutputStreamWriter;import .Socket;/*** Created by haoguibao on 16/2/18.* Description : 封装Pos机打印工具类* Revision :*/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*/protected 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*/protected 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);// initwriter.write("(k");// adjust height of barcodewriter.write(length + 3); // plwriter.write(0); // phwriter.write(49); // cnwriter.write(80); // fnwriter.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); // plwriter.write(0); // phwriter.write(49); // cnwriter.write(81); // fnwriter.write(48); // mwriter.flush();}/*** 进纸并全部切割** @return* @throws IOException*/protected 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*/protected 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*/protected 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*/protected 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*/protected 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*/protected 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*/protected 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*/protected 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*/protected 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*/protected void initPos() throws IOException {writer.write(0x1B);writer.write(0x40);writer.flush();}/*** 加粗** @param flag false为不加粗* @return* @throws IOException*/protected 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();}}}

其中，打印机的IP和端口号从打印机的属性设置处可查。

MainActivity中进行调用：

package com.example.haoguibao.myapplication;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import java.io.IOException;import .UnknownHostException;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {//订单菜品集合private List<FoodsBean> foodsBean;private Pos pos;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button bt_print = (Button) findViewById(R.id.button);bt_print.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// 开启一个子线程new Thread() {public void run() {try {pos = new Pos("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);pos.printWordSpace(1);pos.printText("**测试店铺");pos.printLocation(0);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：/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("品项");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.printTextNewLine("----------------------------------------------");for (FoodsBean foods : foodsBean) {pos.printTextNewLine(foods.getName());pos.printLocation(20, 1);pos.printText(foods.getPrice());pos.printLocation(99, 1);pos.printWordSpace(1);pos.printText(foods.getNumber());pos.printWordSpace(3);pos.printText(foods.getSum());}pos.printTextNewLine("----------------------------------------------");pos.printLocation(1);pos.printLine(2);//打印二维码pos.qrCode("/haovip123");//切纸pos.feedAndCut();pos.closeIOAndSocket();pos = null;} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}.start();}});}private void initData() {foodsBean = new ArrayList<>();for (int i = 0; i < 4; i++) {FoodsBean fb = new FoodsBean();fb.setName("测试菜品" + i);fb.setPrice("90.00");fb.setNumber("1" + i);fb.setSum("10" + i + ".00");foodsBean.add(fb);}}}

附：小票中菜品的Bean类

public class FoodsBean {private String name;private String price;private String number;private String sum;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPrice() {return price;}public void setPrice(String price) {this.price = price;}public String getNumber() {return number;}public void setNumber(String number) {this.number = number;}public String getSum() {return sum;}public void setSum(String sum) {this.sum = sum;}}

打印小票样品如图：

小结：

对于调用打印机，不论使用Java语言还是其他语言，思路都是一样的，利用Socket连接上打印机以后，通过IO流进行输出打印，它们的打印指令都是一样的，可以下载打印手册，针对不同的设置，使用不同的打印指令即可。

某打印指令文档，仅供参考 ： /detail/haovip123/9702573

吐槽一下，资源下载积分，不是我设置的，csdn什么积分计算算法给运算出来的，我都没有权限更改，无语...