Android进阶——安卓调用ESC/POS打印机打印实例

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 java.net.Socket; 
 
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; 
   
  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); 
  } 
   
  protected void closeIOAndSocket() throws IOException { 
    writer.close(); 
    socketOut.close(); 
    sock.close(); 
  } 
   
  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);// 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(); 
  } 
   
  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); 
  } 
   
  protected void printLine(int lineNum) throws IOException { 
    for (int i = 0; i < lineNum; i++) { 
      writer.write("\n"); 
    } 
    writer.flush(); 
  } 
   
  protected void printLine() throws IOException { 
    writer.write("\n"); 
    writer.flush(); 
  } 
   
  protected void printTabSpace(int length) throws IOException { 
    for (int i = 0; i < length; i++) { 
      writer.write("\t"); 
    } 
    writer.flush(); 
  } 
   
  protected void printWordSpace(int length) throws IOException { 
    for (int i = 0; i < length; i++) { 
      writer.write(" "); 
    } 
    writer.flush(); 
  } 
   
  protected void printLocation(int position) throws IOException { 
    writer.write(0x1B); 
    writer.write(97); 
    writer.write(position); 
    writer.flush(); 
  } 
   
  protected void printLocation(int light, int weight) throws IOException { 
    writer.write(0x1B); 
    writer.write(0x24); 
    writer.write(light); 
    writer.write(weight); 
    writer.flush(); 
  } 
   
  protected void printText(String text) throws IOException { 
    String s = text; 
    byte[] content = s.getBytes("gbk"); 
    socketOut.write(content); 
    socketOut.flush(); 
  } 
   
  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(); 
  } 
   
  protected void initPos() throws IOException { 
    writer.write(0x1B); 
    writer.write(0x40); 
    writer.flush(); 
  } 
   
  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 java.net.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; 
  @Override 
  protected 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() { 
      @Override 
      public 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：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("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("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() { 
    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。

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